Muscle weakness. Medical search

A vague complaint of debility, fatigue, or exhaustion attributable to weakness of various muscles. The weakness can be characterized as subacute or chronic, often progressive, and is a manifestation of many muscle and neuromuscular diseases. (From Wyngaarden et al., Cecil Textbook of Medicine, 19th ed, p2251)

Contractile tissue that produces movement in animals.

A subtype of striated muscle, attached by TENDONS to the SKELETON. Skeletal muscles are innervated and their movement can be consciously controlled. They are also called voluntary muscles.

The protein constituents of muscle, the major ones being ACTINS and MYOSINS. More than a dozen accessory proteins exist including TROPONIN; TROPOMYOSIN; and DYSTROPHIN.

A group of inherited congenital myopathic conditions characterized clinically by weakness, hypotonia, and prominent hypoplasia of proximal muscles including the face. Muscle biopsy reveals large numbers of rod-shaped structures beneath the muscle fiber plasma membrane. This disorder is genetically heterogeneous and may occasionally present in adults. (Adams et al., Principles of Neurology, 6th ed, p1453)

Large, multinucleate single cells, either cylindrical or prismatic in shape, that form the basic unit of SKELETAL MUSCLE. They consist of MYOFIBRILS enclosed within and attached to the SARCOLEMMA. They are derived from the fusion of skeletal myoblasts (MYOBLASTS, SKELETAL) into a syncytium, followed by differentiation.

Acquired, familial, and congenital disorders of SKELETAL MUSCLE and SMOOTH MUSCLE.

These include the muscles of the DIAPHRAGM and the INTERCOSTAL MUSCLES.

A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments.

Unstriated and unstriped muscle, one of the muscles of the internal organs, blood vessels, hair follicles, etc. Contractile elements are elongated, usually spindle-shaped cells with centrally located nuclei. Smooth muscle fibers are bound together into sheets or bundles by reticular fibers and frequently elastic nets are also abundant. (From Stedman, 25th ed)

A general term encompassing lower MOTOR NEURON DISEASE; PERIPHERAL NERVOUS SYSTEM DISEASES; and certain MUSCULAR DISEASES. Manifestations include MUSCLE WEAKNESS; FASCICULATION; muscle ATROPHY; SPASM; MYOKYMIA; MUSCLE HYPERTONIA, myalgias, and MUSCLE HYPOTONIA.

The nonstriated involuntary muscle tissue of blood vessels.

Developmental events leading to the formation of adult muscular system, which includes differentiation of the various types of muscle cell precursors, migration of myoblasts, activation of myogenesis and development of muscle anchorage.

A state arrived at through prolonged and strong contraction of a muscle. Studies in athletes during prolonged submaximal exercise have shown that muscle fatigue increases in almost direct proportion to the rate of muscle glycogen depletion. Muscle fatigue in short-term maximal exercise is associated with oxygen lack and an increased level of blood and muscle lactic acid, and an accompanying increase in hydrogen-ion concentration in the exercised muscle.

Derangement in size and number of muscle fibers occurring with aging, reduction in blood supply, or following immobilization, prolonged weightlessness, malnutrition, and particularly in denervation.

Diseases characterized by inflammation involving multiple muscles. This may occur as an acute or chronic condition associated with medication toxicity (DRUG TOXICITY); CONNECTIVE TISSUE DISEASES; infections; malignant NEOPLASMS; and other disorders. The term polymyositis is frequently used to refer to a specific clinical entity characterized by subacute or slowly progressing symmetrical weakness primarily affecting the proximal limb and trunk muscles. The illness may occur at any age, but is most frequent in the fourth to sixth decade of life. Weakness of pharyngeal and laryngeal muscles, interstitial lung disease, and inflammation of the myocardium may also occur. Muscle biopsy reveals widespread destruction of segments of muscle fibers and an inflammatory cellular response. (Adams et al., Principles of Neurology, 6th ed, pp1404-9)

Inflammation of a muscle or muscle tissue.

Skeletal muscle fibers characterized by their expression of the Type I MYOSIN HEAVY CHAIN isoforms which have low ATPase activity and effect several other functional properties - shortening velocity, power output, rate of tension redevelopment.

Skeletal muscle fibers characterized by their expression of the Type II MYOSIN HEAVY CHAIN isoforms which have high ATPase activity and effect several other functional properties - shortening velocity, power output, rate of tension redevelopment. Several fast types have been identified.

The musculofibrous partition that separates the THORACIC CAVITY from the ABDOMINAL CAVITY. Contraction of the diaphragm increases the volume of the thoracic cavity aiding INHALATION.

The amount of force generated by MUSCLE CONTRACTION. Muscle strength can be measured during isometric, isotonic, or isokinetic contraction, either manually or using a device such as a MUSCLE STRENGTH DYNAMOMETER.

The quadriceps femoris. A collective name of the four-headed skeletal muscle of the thigh, comprised of the rectus femoris, vastus intermedius, vastus lateralis, and vastus medialis.

Recording of the changes in electric potential of muscle by means of surface or needle electrodes.

Mitochondria of skeletal and smooth muscle. It does not include myocardial mitochondria for which MITOCHONDRIA, HEART is available.

A subacute or chronic inflammatory disease of muscle and skin, marked by proximal muscle weakness and a characteristic skin rash. The illness occurs with approximately equal frequency in children and adults. The skin lesions usually take the form of a purplish rash (or less often an exfoliative dermatitis) involving the nose, cheeks, forehead, upper trunk, and arms. The disease is associated with a complement mediated intramuscular microangiopathy, leading to loss of capillaries, muscle ischemia, muscle-fiber necrosis, and perifascicular atrophy. The childhood form of this disease tends to evolve into a systemic vasculitis. Dermatomyositis may occur in association with malignant neoplasms. (From Adams et al., Principles of Neurology, 6th ed, pp1405-6)

An autosomal dominant familial disorder characterized by recurrent episodes of skeletal muscle weakness associated with falls in serum potassium levels. The condition usually presents in the first or second decade of life with attacks of trunk and leg paresis during sleep or shortly after awakening. Symptoms may persist for hours to days and generally are precipitated by exercise or a meal high in carbohydrates. (Adams et al., Principles of Neurology, 6th ed, p1483)

The resection or removal of the innervation of a muscle or muscle tissue.

Muscular contractions characterized by increase in tension without change in length.

A heterogeneous group of diseases characterized by the early onset of hypotonia, developmental delay of motor skills, non-progressive weakness. Each of these disorders is associated with a specific histologic muscle fiber abnormality.

A heterogeneous group of inherited MYOPATHIES, characterized by wasting and weakness of the SKELETAL MUSCLE. They are categorized by the sites of MUSCLE WEAKNESS; AGE OF ONSET; and INHERITANCE PATTERNS.

A disorder of neuromuscular transmission characterized by weakness of cranial and skeletal muscles. Autoantibodies directed against acetylcholine receptors damage the motor endplate portion of the NEUROMUSCULAR JUNCTION, impairing the transmission of impulses to skeletal muscles. Clinical manifestations may include diplopia, ptosis, and weakness of facial, bulbar, respiratory, and proximal limb muscles. The disease may remain limited to the ocular muscles. THYMOMA is commonly associated with this condition. (Adams et al., Principles of Neurology, 6th ed, p1459)

A heterogeneous group of disorders characterized by a congenital defect in neuromuscular transmission at the NEUROMUSCULAR JUNCTION. This includes presynaptic, synaptic, and postsynaptic disorders (that are not of autoimmune origin). The majority of these diseases are caused by mutations of various subunits of the nicotinic acetylcholine receptor (RECEPTORS, NICOTINIC) on the postsynaptic surface of the junction. (From Arch Neurol 1999 Feb;56(2):163-7)

Non-striated, elongated, spindle-shaped cells found lining the digestive tract, uterus, and blood vessels. They are derived from specialized myoblasts (MYOBLASTS, SMOOTH MUSCLE).

Progressive myopathies characterized by the presence of inclusion bodies on muscle biopsy. Sporadic and hereditary forms have been described. The sporadic form is an acquired, adult-onset inflammatory vacuolar myopathy affecting proximal and distal muscles. Familial forms usually begin in childhood and lack inflammatory changes. Both forms feature intracytoplasmic and intranuclear inclusions in muscle tissue. (Adams et al., Principles of Neurology, 6th ed, pp1409-10)

The muscles that move the eye. Included in this group are the medial rectus, lateral rectus, superior rectus, inferior rectus, inferior oblique, superior oblique, musculus orbitalis, and levator palpebrae superioris.

The neck muscles consist of the platysma, splenius cervicis, sternocleidomastoid(eus), longus colli, the anterior, medius, and posterior scalenes, digastric(us), stylohyoid(eus), mylohyoid(eus), geniohyoid(eus), sternohyoid(eus), omohyoid(eus), sternothyroid(eus), and thyrohyoid(eus).

A diminution of the skeletal muscle tone marked by a diminished resistance to passive stretching.

Complete or severe weakness of the muscles of respiration. This condition may be associated with MOTOR NEURON DISEASES; PERIPHERAL NERVE DISEASES; NEUROMUSCULAR JUNCTION DISEASES; SPINAL CORD DISEASES; injury to the PHRENIC NERVE; and other disorders.

An X-linked recessive muscle disease caused by an inability to synthesize DYSTROPHIN, which is involved with maintaining the integrity of the sarcolemma. Muscle fibers undergo a process that features degeneration and regeneration. Clinical manifestations include proximal weakness in the first few years of life, pseudohypertrophy, cardiomyopathy (see MYOCARDIAL DISEASES), and an increased incidence of impaired mentation. Becker muscular dystrophy is a closely related condition featuring a later onset of disease (usually adolescence) and a slowly progressive course. (Adams et al., Principles of Neurology, 6th ed, p1415)

One of two types of muscle in the body, characterized by the array of bands observed under microscope. Striated muscles can be divided into two subtypes: the CARDIAC MUSCLE and the SKELETAL MUSCLE.

A device that measures MUSCLE STRENGTH during muscle contraction, such as gripping, pushing, and pulling. It is used to evaluate the health status of muscle in sports medicine or physical therapy.

A heterogenous group of inherited muscular dystrophy that can be autosomal dominant or autosomal recessive. There are many forms (called LGMDs) involving genes encoding muscle membrane proteins such as the sarcoglycan (SARCOGLYCANS) complex that interacts with DYSTROPHIN. The disease is characterized by progressing wasting and weakness of the proximal muscles of arms and legs around the HIPS and SHOULDERS (the pelvic and shoulder girdles).

Skeletal muscle structures that function as the MECHANORECEPTORS responsible for the stretch or myotactic reflex (REFLEX, STRETCH). They are composed of a bundle of encapsulated SKELETAL MUSCLE FIBERS, i.e., the intrafusal fibers (nuclear bag 1 fibers, nuclear bag 2 fibers, and nuclear chain fibers) innervated by SENSORY NEURONS.

That phase of a muscle twitch during which a muscle returns to a resting position.

The synapse between a neuron and a muscle.

Conical muscular projections from the walls of the cardiac ventricles, attached to the cusps of the atrioventricular valves by the chordae tendineae.

Necrosis or disintegration of skeletal muscle often followed by myoglobinuria.

The larger subunits of MYOSINS. The heavy chains have a molecular weight of about 230 kDa and each heavy chain is usually associated with a dissimilar pair of MYOSIN LIGHT CHAINS. The heavy chains possess actin-binding and ATPase activity.

Paralysis of one or more of the ocular muscles due to disorders of the eye muscles, neuromuscular junction, supporting soft tissue, tendons, or innervation to the muscles.

A heterogeneous group of genetic disorders characterized by progressive MUSCULAR ATROPHY and MUSCLE WEAKNESS beginning in the hands, the legs, or the feet. Most are adult-onset autosomal dominant forms. Others are autosomal recessive.

An autoimmune disease characterized by weakness and fatigability of proximal muscles, particularly of the pelvic girdle, lower extremities, trunk, and shoulder girdle. There is relative sparing of extraocular and bulbar muscles. CARCINOMA, SMALL CELL of the lung is a frequently associated condition, although other malignancies and autoimmune diseases may be associated. Muscular weakness results from impaired impulse transmission at the NEUROMUSCULAR JUNCTION. Presynaptic calcium channel dysfunction leads to a reduced amount of acetylcholine being released in response to stimulation of the nerve. (From Adams et al., Principles of Neurology, 6th ed, pp 1471)

Abnormally low potassium concentration in the blood. It may result from potassium loss by renal secretion or by the gastrointestinal route, as by vomiting or diarrhea. It may be manifested clinically by neuromuscular disorders ranging from weakness to paralysis, by electrocardiographic abnormalities (depression of the T wave and elevation of the U wave), by renal disease, and by gastrointestinal disorders. (Dorland, 27th ed)

A strain of mice arising from a spontaneous MUTATION (mdx) in inbred C57BL mice. This mutation is X chromosome-linked and produces viable homozygous animals that lack the muscle protein DYSTROPHIN, have high serum levels of muscle ENZYMES, and possess histological lesions similar to human MUSCULAR DYSTROPHY. The histological features, linkage, and map position of mdx make these mice a worthy animal model of DUCHENNE MUSCULAR DYSTROPHY.

Neuromuscular disorder characterized by PROGRESSIVE MUSCULAR ATROPHY; MYOTONIA, and various multisystem atrophies. Mild INTELLECTUAL DISABILITY may also occur. Abnormal TRINUCLEOTIDE REPEAT EXPANSION in the 3' UNTRANSLATED REGIONS of DMPK PROTEIN gene is associated with Myotonic Dystrophy 1. DNA REPEAT EXPANSION of zinc finger protein-9 gene intron is associated with Myotonic Dystrophy 2.

The long cylindrical contractile organelles of STRIATED MUSCLE cells composed of ACTIN FILAMENTS; MYOSIN filaments; and other proteins organized in arrays of repeating units called SARCOMERES .

Muscles forming the ABDOMINAL WALL including RECTUS ABDOMINIS, external and internal oblique muscles, transversus abdominis, and quadratus abdominis. (from Stedman, 25th ed)

Muscles of facial expression or mimetic muscles that include the numerous muscles supplied by the facial nerve that are attached to and move the skin of the face. (From Stedman, 25th ed)

A hereditary motor and sensory neuropathy transmitted most often as an autosomal dominant trait and characterized by progressive distal wasting and loss of reflexes in the muscles of the legs (and occasionally involving the arms). Onset is usually in the second to fourth decade of life. This condition has been divided into two subtypes, hereditary motor and sensory neuropathy (HMSN) types I and II. HMSN I is associated with abnormal nerve conduction velocities and nerve hypertrophy, features not seen in HMSN II. (Adams et al., Principles of Neurology, 6th ed, p1343)

Mature contractile cells, commonly known as myocytes, that form one of three kinds of muscle. The three types of muscle cells are skeletal (MUSCLE FIBERS, SKELETAL), cardiac (MYOCYTES, CARDIAC), and smooth (MYOCYTES, SMOOTH MUSCLE). They are derived from embryonic (precursor) muscle cells called MYOBLASTS.

Cell surface proteins that bind acetylcholine with high affinity and trigger intracellular changes influencing the behavior of cells. Cholinergic receptors are divided into two major classes, muscarinic and nicotinic, based originally on their affinity for nicotine and muscarine. Each group is further subdivided based on pharmacology, location, mode of action, and/or molecular biology.

An organophosphate insecticide that inhibits monoamine oxidase and acetylcholinesterase. It has been shown to be genotoxic.

A masticatory muscle whose action is closing the jaws.

An autosomal recessively inherited glycogen storage disease caused by GLUCAN 1,4-ALPHA-GLUCOSIDASE deficiency. Large amounts of GLYCOGEN accumulate in the LYSOSOMES of skeletal muscle (MUSCLE, SKELETAL); HEART; LIVER; SPINAL CORD; and BRAIN. Three forms have been described: infantile, childhood, and adult. The infantile form is fatal in infancy and presents with hypotonia and a hypertrophic cardiomyopathy (CARDIOMYOPATHY, HYPERTROPHIC). The childhood form usually presents in the second year of life with proximal weakness and respiratory symptoms. The adult form consists of a slowly progressive proximal myopathy. (From Muscle Nerve 1995;3:S61-9; Menkes, Textbook of Child Neurology, 5th ed, pp73-4)

A transferase that catalyzes formation of PHOSPHOCREATINE from ATP + CREATINE. The reaction stores ATP energy as phosphocreatine. Three cytoplasmic ISOENZYMES have been identified in human tissues: the MM type from SKELETAL MUSCLE, the MB type from myocardial tissue and the BB type from nervous tissue as well as a mitochondrial isoenzyme. Macro-creatine kinase refers to creatine kinase complexed with other serum proteins.

Muscles arising in the zygomatic arch that close the jaw. Their nerve supply is masseteric from the mandibular division of the trigeminal nerve. (From Stedman, 25th ed)

Prolonged failure of muscle relaxation after contraction. This may occur after voluntary contractions, muscle percussion, or electrical stimulation of the muscle. Myotonia is a characteristic feature of MYOTONIC DISORDERS.

Respiratory muscles that arise from the lower border of one rib and insert into the upper border of the adjoining rib, and contract during inspiration or respiration. (From Stedman, 25th ed)

A heterogenous group of inherited disorders characterized by recurring attacks of rapidly progressive flaccid paralysis or myotonia. These conditions have in common a mutation of the gene encoding the alpha subunit of the sodium channel in skeletal muscle. They are frequently associated with fluctuations in serum potassium levels. Periodic paralysis may also occur as a non-familial process secondary to THYROTOXICOSIS and other conditions. (From Adams et al., Principles of Neurology, 6th ed, p1481)

The properties, processes, and behavior of biological systems under the action of mechanical forces.

A syndrome characterized by new neuromuscular symptoms that occur at least 15 years after clinical stability has been attained in patients with a prior history of symptomatic poliomyelitis. Clinical features include new muscular weakness and atrophy of the limbs, bulbar innervated musculature, and muscles of respiration, combined with excessive fatigue, joint pain, and reduced stamina. The process is marked by slow progression and periods of stabilization. (From Ann NY Acad Sci 1995 May 25;753:68-80)

The maximum volume of air that can be inspired after reaching the end of a normal, quiet expiration. It is the sum of the TIDAL VOLUME and the INSPIRATORY RESERVE VOLUME. Common abbreviation is IC.

Elements of limited time intervals, contributing to particular results or situations.

A muscle protein localized in surface membranes which is the product of the Duchenne/Becker muscular dystrophy gene. Individuals with Duchenne muscular dystrophy usually lack dystrophin completely while those with Becker muscular dystrophy have dystrophin of an altered size. It shares features with other cytoskeletal proteins such as SPECTRIN and alpha-actinin but the precise function of dystrophin is not clear. One possible role might be to preserve the integrity and alignment of the plasma membrane to the myofibrils during muscle contraction and relaxation. MW 400 kDa.

Neurons which activate MUSCLE CELLS.

A group of disorders marked by progressive degeneration of motor neurons in the spinal cord resulting in weakness and muscular atrophy, usually without evidence of injury to the corticospinal tracts. Diseases in this category include Werdnig-Hoffmann disease and later onset SPINAL MUSCULAR ATROPHIES OF CHILDHOOD, most of which are hereditary. (Adams et al., Principles of Neurology, 6th ed, p1089)

Diseases characterized by a selective degeneration of the motor neurons of the spinal cord, brainstem, or motor cortex. Clinical subtypes are distinguished by the major site of degeneration. In AMYOTROPHIC LATERAL SCLEROSIS there is involvement of upper, lower, and brainstem motor neurons. In progressive muscular atrophy and related syndromes (see MUSCULAR ATROPHY, SPINAL) the motor neurons in the spinal cord are primarily affected. With progressive bulbar palsy (BULBAR PALSY, PROGRESSIVE), the initial degeneration occurs in the brainstem. In primary lateral sclerosis, the cortical neurons are affected in isolation. (Adams et al., Principles of Neurology, 6th ed, p1089)

The record of descent or ancestry, particularly of a particular condition or trait, indicating individual family members, their relationships, and their status with respect to the trait or condition.

The repeating contractile units of the MYOFIBRIL, delimited by Z bands along its length.

Elongated, spindle-shaped, quiescent myoblasts lying in close contact with adult skeletal muscle. They are thought to play a role in muscle repair and regeneration.

The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment.

A basic element found in nearly all organized tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes.

A general term most often used to describe severe or complete loss of muscle strength due to motor system disease from the level of the cerebral cortex to the muscle fiber. This term may also occasionally refer to a loss of sensory function. (From Adams et al., Principles of Neurology, 6th ed, p45)

Embryonic (precursor) cells of the myogenic lineage that develop from the MESODERM. They undergo proliferation, migrate to their various sites, and then differentiate into the appropriate form of myocytes (MYOCYTES, SKELETAL; MYOCYTES, CARDIAC; MYOCYTES, SMOOTH MUSCLE).

An autosomal dominant familial disorder which presents in infancy or childhood and is characterized by episodes of weakness associated with hyperkalemia. During attacks, muscles of the lower extremities are initially affected, followed by the lower trunk and arms. Episodes last from 15-60 minutes and typically occur after a period of rest following exercise. A defect in skeletal muscle sodium channels has been identified as the cause of this condition. Normokalemic periodic paralysis is a closely related disorder marked by a lack of alterations in potassium levels during attacks of weakness. (Adams et al., Principles of Neurology, 6th ed, p1481)

Use of electric potential or currents to elicit biological responses.

The rotational force about an axis that is equal to the product of a force times the distance from the axis where the force is applied.

Naturally occurring or experimentally induced animal diseases with pathological processes sufficiently similar to those of human diseases. They are used as study models for human diseases.

Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.

Diseases characterized by MYOTONIA, which may be inherited or acquired. Myotonia may be restricted to certain muscles (e.g., intrinsic hand muscles) or occur as a generalized condition.

The propagation of the NERVE IMPULSE along the nerve away from the site of an excitation stimulus.

Therapeutic exercises aimed to deepen inspiration or expiration or even to alter the rate and rhythm of respiration.

The pectoralis major and pectoralis minor muscles that make up the upper and fore part of the chest in front of the AXILLA.

Failure to adequately provide oxygen to cells of the body and to remove excess carbon dioxide from them. (Stedman, 25th ed)

A motor neuron disease marked by progressive weakness of the muscles innervated by cranial nerves of the lower brain stem. Clinical manifestations include dysarthria, dysphagia, facial weakness, tongue weakness, and fasciculations of the tongue and facial muscles. The adult form of the disease is marked initially by bulbar weakness which progresses to involve motor neurons throughout the neuroaxis. Eventually this condition may become indistinguishable from AMYOTROPHIC LATERAL SCLEROSIS. Fazio-Londe syndrome is an inherited form of this illness which occurs in children and young adults. (Adams et al., Principles of Neurology, 6th ed, p1091; Brain 1992 Dec;115(Pt 6):1889-1900)

An autosomal dominant hereditary disease that presents in late in life and is characterized by DYSPHAGIA and progressive ptosis of the eyelids. Mutations in the gene for POLY(A)-BINDING PROTEIN II have been associated with oculopharyngeal muscular dystrophy.

A characteristic symptom complex.

Removal and pathologic examination of specimens in the form of small pieces of tissue from the living body.

A syndrome associated with inflammation of the BRACHIAL PLEXUS. Clinical features include severe pain in the shoulder region which may be accompanied by MUSCLE WEAKNESS and loss of sensation in the upper extremity. This condition may be associated with VIRUS DISEASES; IMMUNIZATION; SURGERY; heroin use (see HEROIN DEPENDENCE); and other conditions. The term brachial neuralgia generally refers to pain associated with brachial plexus injury. (From Adams et al., Principles of Neurology, 6th ed, pp1355-6)

An autosomal dominant degenerative muscle disease characterized by slowly progressive weakness of the muscles of the face, upper-arm, and shoulder girdle. The onset of symptoms usually occurs in the first or second decade of life. Affected individuals usually present with impairment of upper extremity elevation. This tends to be followed by facial weakness, primarily involving the orbicularis oris and orbicularis oculi muscles. (Neuromuscul Disord 1997;7(1):55-62; Adams et al., Principles of Neurology, 6th ed, p1420)

Inhaling liquid or solids, such as stomach contents, into the RESPIRATORY TRACT. When this causes severe lung damage, it is called ASPIRATION PNEUMONIA.

A form of muscle hypertonia associated with upper MOTOR NEURON DISEASE. Resistance to passive stretch of a spastic muscle results in minimal initial resistance (a "free interval") followed by an incremental increase in muscle tone. Tone increases in proportion to the velocity of stretch. Spasticity is usually accompanied by HYPERREFLEXIA and variable degrees of MUSCLE WEAKNESS. (From Adams et al., Principles of Neurology, 6th ed, p54)

Conditions characterized by impaired transmission of impulses at the NEUROMUSCULAR JUNCTION. This may result from disorders that affect receptor function, pre- or postsynaptic membrane function, or ACETYLCHOLINESTERASE activity. The majority of diseases in this category are associated with autoimmune, toxic, or inherited conditions.

An abnormal response to a stimulus applied to the sensory components of the nervous system. This may take the form of increased, decreased, or absent reflexes.

The portion of the leg in humans and other animals found between the HIP and KNEE.

An intermediate filament protein found predominantly in smooth, skeletal, and cardiac muscle cells. Localized at the Z line. MW 50,000 to 55,000 is species dependent.

A voltage-gated sodium channel subtype that mediates the sodium ion PERMEABILITY of SKELETAL MYOCYTES. Defects in the SCN4A gene, which codes for the alpha subunit of this sodium channel, are associated with several MYOTONIC DISORDERS.

Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.

The act of BREATHING in.

A group of muscle diseases associated with abnormal mitochondria function.

Filamentous proteins that are the main constituent of the thin filaments of muscle fibers. The filaments (known also as filamentous or F-actin) can be dissociated into their globular subunits; each subunit is composed of a single polypeptide 375 amino acids long. This is known as globular or G-actin. In conjunction with MYOSINS, actin is responsible for the contraction and relaxation of muscle.

Neoplasms composed of connective tissue, including elastic, mucous, reticular, osseous, and cartilaginous tissue. The concept does not refer to neoplasms located in connective tissue.

A protein found in the thin filaments of muscle fibers. It inhibits contraction of the muscle unless its position is modified by TROPONIN.

Diseases of multiple peripheral nerves simultaneously. Polyneuropathies usually are characterized by symmetrical, bilateral distal motor and sensory impairment with a graded increase in severity distally. The pathological processes affecting peripheral nerves include degeneration of the axon, myelin or both. The various forms of polyneuropathy are categorized by the type of nerve affected (e.g., sensory, motor, or autonomic), by the distribution of nerve injury (e.g., distal vs. proximal), by nerve component primarily affected (e.g., demyelinating vs. axonal), by etiology, or by pattern of inheritance.

A powerful flexor of the thigh at the hip joint (psoas major) and a weak flexor of the trunk and lumbar spinal column (psoas minor). Psoas is derived from the Greek "psoa", the plural meaning "muscles of the loin". It is a common site of infection manifesting as abscess (PSOAS ABSCESS). The psoas muscles and their fibers are also used frequently in experiments in muscle physiology.

An acute inflammatory autoimmune neuritis caused by T cell- mediated cellular immune response directed towards peripheral myelin. Demyelination occurs in peripheral nerves and nerve roots. The process is often preceded by a viral or bacterial infection, surgery, immunization, lymphoma, or exposure to toxins. Common clinical manifestations include progressive weakness, loss of sensation, and loss of deep tendon reflexes. Weakness of respiratory muscles and autonomic dysfunction may occur. (From Adams et al., Principles of Neurology, 6th ed, pp1312-1314)

An inherited congenital myopathic condition characterized by weakness and hypotonia in infancy and delayed motor development. Muscle biopsy reveals a condensation of myofibrils and myofibrillar material in the central portion of each muscle fiber. (Adams et al., Principles of Neurology, 6th ed, p1452)

Clinical sign or symptom manifested as debility, or lack or loss of strength and energy.

Either of two extremities of four-footed non-primate land animals. It usually consists of a FEMUR; TIBIA; and FIBULA; tarsals; METATARSALS; and TOES. (From Storer et al., General Zoology, 6th ed, p73)

Force exerted when gripping or grasping.

The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.

A group of slowly progressive inherited disorders affecting motor and sensory peripheral nerves. Subtypes include HMSNs I-VII. HMSN I and II both refer to CHARCOT-MARIE-TOOTH DISEASE. HMSN III refers to hypertrophic neuropathy of infancy. HMSN IV refers to REFSUM DISEASE. HMSN V refers to a condition marked by a hereditary motor and sensory neuropathy associated with spastic paraplegia (see SPASTIC PARAPLEGIA, HEREDITARY). HMSN VI refers to HMSN associated with an inherited optic atrophy (OPTIC ATROPHIES, HEREDITARY), and HMSN VII refers to HMSN associated with retinitis pigmentosa. (From Adams et al., Principles of Neurology, 6th ed, p1343)

Manner or style of walking.

A degenerative disorder affecting upper MOTOR NEURONS in the brain and lower motor neurons in the brain stem and SPINAL CORD. Disease onset is usually after the age of 50 and the process is usually fatal within 3 to 6 years. Clinical manifestations include progressive weakness, atrophy, FASCICULATION, hyperreflexia, DYSARTHRIA, dysphagia, and eventual paralysis of respiratory function. Pathologic features include the replacement of motor neurons with fibrous ASTROCYTES and atrophy of anterior SPINAL NERVE ROOTS and corticospinal tracts. (From Adams et al., Principles of Neurology, 6th ed, pp1089-94)

A masticatory muscle whose action is closing the jaws; its posterior portion retracts the mandible.

The muscles of the PHARYNX are voluntary muscles arranged in two layers. The external circular layer consists of three constrictors (superior, middle, and inferior). The internal longitudinal layer consists of the palatopharyngeus, the salpingopharyngeus, and the stylopharyngeus. During swallowing, the outer layer constricts the pharyngeal wall and the inner layer elevates pharynx and LARYNX.

Physical activity which is usually regular and done with the intention of improving or maintaining PHYSICAL FITNESS or HEALTH. Contrast with PHYSICAL EXERTION which is concerned largely with the physiologic and metabolic response to energy expenditure.

The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.

A cholinesterase inhibitor with a slightly longer duration of action than NEOSTIGMINE. It is used in the treatment of myasthenia gravis and to reverse the actions of muscle relaxants.

The volume of air that is exhaled by a maximal expiration following a maximal inspiration.

Laboratory mice that have been produced from a genetically manipulated EGG or EMBRYO, MAMMALIAN.

Inherited myotonic disorders with early childhood onset MYOTONIA. Muscular hypertrophy is common and myotonia may impair ambulation and other movements. It is classified as Thomsen (autosomal dominant) or Becker (autosomal recessive) generalized myotonia mainly based on the inheritance pattern. Becker type is also clinically more severe. An autosomal dominant variant with milder symptoms and later onset is known as myotonia levior. Mutations in the voltage-dependent skeletal muscle chloride channel are associated with the disorders.

A rapid-onset, short-acting cholinesterase inhibitor used in cardiac arrhythmias and in the diagnosis of myasthenia gravis. It has also been used as an antidote to curare principles.

The time span between the beginning of physical activity by an individual and the termination because of exhaustion.

Disorders of the special senses (i.e., VISION; HEARING; TASTE; and SMELL) or somatosensory system (i.e., afferent components of the PERIPHERAL NERVOUS SYSTEM).

RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm.

Severe or complete loss of motor function in all four limbs which may result from BRAIN DISEASES; SPINAL CORD DISEASES; PERIPHERAL NERVOUS SYSTEM DISEASES; NEUROMUSCULAR DISEASES; or rarely MUSCULAR DISEASES. The locked-in syndrome is characterized by quadriplegia in combination with cranial muscle paralysis. Consciousness is spared and the only retained voluntary motor activity may be limited eye movements. This condition is usually caused by a lesion in the upper BRAIN STEM which injures the descending cortico-spinal and cortico-bulbar tracts.

A type of strength-building exercise program that requires the body muscle to exert a force against some form of resistance, such as weight, stretch bands, water, or immovable objects. Resistance exercise is a combination of static and dynamic contractions involving shortening and lengthening of skeletal muscles.

A family of transmembrane dystrophin-associated proteins that play a role in the membrane association of the DYSTROPHIN-ASSOCIATED PROTEIN COMPLEX.

Diseases of the cervical (and first thoracic) roots, nerve trunks, cords, and peripheral nerve components of the BRACHIAL PLEXUS. Clinical manifestations include regional pain, PARESTHESIA; MUSCLE WEAKNESS, and decreased sensation (HYPESTHESIA) in the upper extremity. These disorders may be associated with trauma (including BIRTH INJURIES); THORACIC OUTLET SYNDROME; NEOPLASMS; NEURITIS; RADIOTHERAPY; and other conditions. (From Adams et al., Principles of Neurology, 6th ed, pp1351-2)

Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques.

A non-fibrillar collagen that forms a network of MICROFIBRILS within the EXTRACELLULAR MATRIX of CONNECTIVE TISSUE. The alpha subunits of collagen type VI assemble into antiparallel, overlapping dimers which then align to form tetramers.

Prolonged shortening of the muscle or other soft tissue around a joint, preventing movement of the joint.

The specialized postsynaptic region of a muscle cell. The motor endplate is immediately across the synaptic cleft from the presynaptic axon terminal. Among its anatomical specializations are junctional folds which harbor a high density of cholinergic receptors.

Diseases of the peripheral nerves external to the brain and spinal cord, which includes diseases of the nerve roots, ganglia, plexi, autonomic nerves, sensory nerves, and motor nerves.

Measurement of the various processes involved in the act of respiration: inspiration, expiration, oxygen and carbon dioxide exchange, lung volume and compliance, etc.

The farthest or outermost projections of the body, such as the HAND and FOOT.

Histochemical localization of immunoreactive substances using labeled antibodies as reagents.

Drugs that inhibit cholinesterases. The neurotransmitter ACETYLCHOLINE is rapidly hydrolyzed, and thereby inactivated, by cholinesterases. When cholinesterases are inhibited, the action of endogenously released acetylcholine at cholinergic synapses is potentiated. Cholinesterase inhibitors are widely used clinically for their potentiation of cholinergic inputs to the gastrointestinal tract and urinary bladder, the eye, and skeletal muscles; they are also used for their effects on the heart and the central nervous system.

The physical activity of a human or an animal as a behavioral phenomenon.

Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.

The act of blowing a powder, vapor, or gas into any body cavity for experimental, diagnostic, or therapeutic purposes.

In patients with neoplastic diseases a wide variety of clinical pictures which are indirect and usually remote effects produced by tumor cell metabolites or other products.

The exercise capacity of an individual as measured by endurance (maximal exercise duration and/or maximal attained work load) during an EXERCISE TEST.

The projecting part on each side of the body, formed by the side of the pelvis and the top portion of the femur.

The age, developmental stage, or period of life at which a disease or the initial symptoms or manifestations of a disease appear in an individual.

Difficult or labored breathing.

Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.

The rate at which oxygen is used by a tissue; microliters of oxygen STPD used per milligram of tissue per hour; the rate at which oxygen enters the blood from alveolar gas, equal in the steady state to the consumption of oxygen by tissue metabolism throughout the body. (Stedman, 25th ed, p346)

A pteridinetriamine compound that inhibits SODIUM reabsorption through SODIUM CHANNELS in renal EPITHELIAL CELLS.

A reduction in the amount of air entering the pulmonary alveoli.

An autosomal recessive disorder of fatty acid oxidation, and branched chain amino acids (AMINO ACIDS, BRANCHED-CHAIN); LYSINE; and CHOLINE catabolism, that is due to defects in either subunit of ELECTRON TRANSFER FLAVOPROTEIN or its dehydrogenase, electron transfer flavoprotein-ubiquinone oxidoreductase (EC 1.5.5.1).

Strains of mice in which certain GENES of their GENOMES have been disrupted, or "knocked-out". To produce knockouts, using RECOMBINANT DNA technology, the normal DNA sequence of the gene being studied is altered to prevent synthesis of a normal gene product. Cloned cells in which this DNA alteration is successful are then injected into mouse EMBRYOS to produce chimeric mice. The chimeric mice are then bred to yield a strain in which all the cells of the mouse contain the disrupted gene. Knockout mice are used as EXPERIMENTAL ANIMAL MODELS for diseases (DISEASE MODELS, ANIMAL) and to clarify the functions of the genes.

Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation.

Drugs that interrupt transmission of nerve impulses at the skeletal neuromuscular junction. They can be of two types, competitive, stabilizing blockers (NEUROMUSCULAR NONDEPOLARIZING AGENTS) or noncompetitive, depolarizing agents (NEUROMUSCULAR DEPOLARIZING AGENTS). Both prevent acetylcholine from triggering the muscle contraction and they are used as anesthesia adjuvants, as relaxants during electroshock, in convulsive states, etc.

Any autoimmune animal disease model used in the study of MYASTHENIA GRAVIS. Injection with purified neuromuscular junction acetylcholine receptor (AChR) (see RECEPTORS, CHOLINERGIC) components results in a myasthenic syndrome that has acute and chronic phases. The motor endplate pathology, loss of acetylcholine receptors, presence of circulating anti-AChR antibodies, and electrophysiologic changes make this condition virtually identical to human myasthenia gravis. Passive transfer of AChR antibodies or lymphocytes from afflicted animals to normals induces passive transfer experimental autoimmune myasthenia gravis. (From Joynt, Clinical Neurology, 1997, Ch 54, p3)

Measurement of the amount of air that the lungs may contain at various points in the respiratory cycle.

A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

A network of tubules and sacs in the cytoplasm of SKELETAL MUSCLE FIBERS that assist with muscle contraction and relaxation by releasing and storing calcium ions.

A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company.

The inferior part of the lower extremity between the KNEE and the ANKLE.

Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.

A glucocorticoid with the general properties of the corticosteroids. It is the drug of choice for all conditions in which routine systemic corticosteroid therapy is indicated, except adrenal deficiency states.

A general term referring to a mild to moderate degree of muscular weakness, occasionally used as a synonym for PARALYSIS (severe or complete loss of motor function). In the older literature, paresis often referred specifically to paretic neurosyphilis (see NEUROSYPHILIS). "General paresis" and "general paralysis" may still carry that connotation. Bilateral lower extremity paresis is referred to as PARAPARESIS.

A constituent of STRIATED MUSCLE and LIVER. It is an amino acid derivative and an essential cofactor for fatty acid metabolism.

A group of recessively inherited diseases that feature progressive muscular atrophy and hypotonia. They are classified as type I (Werdnig-Hoffman disease), type II (intermediate form), and type III (Kugelberg-Welander disease). Type I is fatal in infancy, type II has a late infantile onset and is associated with survival into the second or third decade. Type III has its onset in childhood, and is slowly progressive. (J Med Genet 1996 Apr:33(4):281-3)

The state of weariness following a period of exertion, mental or physical, characterized by a decreased capacity for work and reduced efficiency to respond to stimuli.

Pathological processes involving the PHARYNX.

Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.

A sustained and usually painful contraction of muscle fibers. This may occur as an isolated phenomenon or as a manifestation of an underlying disease process (e.g., UREMIA; HYPOTHYROIDISM; MOTOR NEURON DISEASE; etc.). (From Adams et al., Principles of Neurology, 6th ed, p1398)

The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration (= OXYGEN CONSUMPTION) or cell respiration (= CELL RESPIRATION).

A condition of an abnormally low level of PHOSPHATES in the blood.

A growth differentiation factor that is a potent inhibitor of SKELETAL MUSCLE growth. It may play a role in the regulation of MYOGENESIS and in muscle maintenance during adulthood.

Disorder caused by an interruption of the mineralization of organic bone matrix leading to bone softening, bone pain, and weakness. It is the adult form of rickets resulting from disruption of VITAMIN D; PHOSPHORUS; or CALCIUM homeostasis.

A tetrameric calcium release channel in the SARCOPLASMIC RETICULUM membrane of SMOOTH MUSCLE CELLS, acting oppositely to SARCOPLASMIC RETICULUM CALCIUM-TRANSPORTING ATPASES. It is important in skeletal and cardiac excitation-contraction coupling and studied by using RYANODINE. Abnormalities are implicated in CARDIAC ARRHYTHMIAS and MUSCULAR DISEASES.

Any method of artificial breathing that employs mechanical or non-mechanical means to force the air into and out of the lungs. Artificial respiration or ventilation is used in individuals who have stopped breathing or have RESPIRATORY INSUFFICIENCY to increase their intake of oxygen (O2) and excretion of carbon dioxide (CO2).

The study of the generation and behavior of electrical charges in living organisms particularly the nervous system and the effects of electricity on living organisms.

A regimen or plan of physical activities designed and prescribed for specific therapeutic goals. Its purpose is to restore normal musculoskeletal function or to reduce pain caused by diseases or injuries.

The position or attitude of the body.

A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain.

Apparatus used to support, align, prevent, or correct deformities or to improve the function of movable parts of the body.

Expenditure of energy during PHYSICAL ACTIVITY. Intensity of exertion may be measured by rate of OXYGEN CONSUMPTION; HEAT produced, or HEART RATE. Perceived exertion, a psychological measure of exertion, is included.

The nerves outside of the brain and spinal cord, including the autonomic, cranial, and spinal nerves. Peripheral nerves contain non-neuronal cells and connective tissue as well as axons. The connective tissue layers include, from the outside to the inside, the epineurium, the perineurium, and the endoneurium.

Enzymes that catalyze the exohydrolysis of 1,4-alpha-glucosidic linkages with release of alpha-glucose. Deficiency of alpha-1,4-glucosidase may cause GLYCOGEN STORAGE DISEASE TYPE II.

Assessment of sensory and motor responses and reflexes that is used to determine impairment of the nervous system.

Identification of proteins or peptides that have been electrophoretically separated by blot transferring from the electrophoresis gel to strips of nitrocellulose paper, followed by labeling with antibody probes.

A SMN complex protein that is essential for the function of the SMN protein complex. In humans the protein is encoded by a single gene found near the inversion telomere of a large inverted region of CHROMOSOME 5. Mutations in the gene coding for survival of motor neuron 1 protein may result in SPINAL MUSCULAR ATROPHIES OF CHILDHOOD.

An element in the alkali group of metals with an atomic symbol K, atomic number 19, and atomic weight 39.10. It is the chief cation in the intracellular fluid of muscle and other cells. Potassium ion is a strong electrolyte that plays a significant role in the regulation of fluid volume and maintenance of the WATER-ELECTROLYTE BALANCE.

A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.

Death resulting from the presence of a disease in an individual, as shown by a single case report or a limited number of patients. This should be differentiated from DEATH, the physiological cessation of life and from MORTALITY, an epidemiological or statistical concept.

Autosomal dominant myopathy with proximal weakness and early respiratory muscle involvement maps to chromosome 2q. (1/934)

Two Swedish families with autosomal dominant myopathy, who also had proximal weakness, early respiratory failure, and characteristic cytoplasmic bodies in the affected muscle biopsies, were screened for linkage by means of the human genome screening set (Cooperative Human Linkage Center Human Screening Set/Weber version 6). Most chromosome regions were completely excluded by linkage analysis (LOD score <-2). Linkage to the chromosomal region 2q24-q31 was established. A maximum combined two-point LOD score of 4.87 at a recombination fraction of 0 was obtained with marker D2S1245. Haplotype analysis indicated that the gene responsible for the disease is likely to be located in the 17-cM region between markers D2S2384 and D2S364. The affected individuals from these two families share an identical haplotype, which suggests a common origin. (+info)

Mice with IFN-gamma receptor deficiency are less susceptible to experimental autoimmune myasthenia gravis. (2/934)

IFN-gamma can either adversely or beneficially affect certain experimental autoimmune diseases. To study the role of IFN-gamma in the autoantibody-mediated experimental autoimmune myasthenia gravis (EAMG), an animal model of myasthenia gravis in humans, IFN-gammaR-deficient (IFN-gammaR-/-) mutant C57BL/6 mice and congenic wild-type mice were immunized with Torpedo acetylcholine receptor (AChR) plus CFA. IFN-gammaR-/- mice exhibited significantly lower incidence and severity of muscle weakness, lower anti-AChR IgG Ab levels, and lower Ab affinity to AChR compared with wild-type mice. Passive transfer of serum from IFN-gammaR-/- mice induced less muscular weakness compared with serum from wild-type mice. In contrast, numbers of lymph node cells secreting IFN-gamma and of those expressing IFN-gamma mRNA were strongly augmented in the IFN-gammaR-/- mice, reflecting a failure of negative feedback circuits. Cytokine studies by in situ hybridization revealed lower levels of lymphoid cells expressing AChR-reactive IL-1beta and TNF-alpha mRNA in AChR + CFA-immunized IFN-gammaR-/- mice compared with wild-type mice. No differences were found for AChR-reactive cells expressing IL-4, IL-10, or TGF-beta mRNA. These results indicate that IFN-gamma promotes systemic humoral responses in EAMG by up-regulating the production and the affinity of anti-AChR autoantibodies, thereby contributing to susceptibility to EAMG in C57BL/6-type mice. (+info)

Contribution of lung function to exercise capacity in patients with chronic heart failure. (3/934)

BACKGROUND: The importance of exercise capacity as an indicator of prognosis in patients with heart disease is well recognized. However, factors contributing to exercise limitation in such patients have not been fully characterized and in particular, the role of lung function in determining exercise capacity has not been extensively investigated. OBJECTIVE: To examine the extent to which pulmonary function and respiratory muscle strength indices predict exercise performance in patients with moderate to severe heart failure. METHODS: Fifty stable heart failure patients underwent a maximal symptom-limited cardiopulmonary exercise test on a treadmill to determine maximum oxygen consumption (VO2max), pulmonary function tests and maximum inspiratory (PImax) and expiratory (PEmax) pressure measurement. RESULTS: In univariate analysis, VO2max correlated with forced vital capacity (r = 0.35, p = 0.01), forced expiratory volume in 1 s (r = 0.45, p = 0.001), FEV1/FVC ratio (r = 0.37, p = 0.009), maximal midexpiratory flow rate (FEF25-75, r = 0. 47, p < 0.001), and PImax (r = 0.46, p = 0.001), but not with total lung capacity, diffusion capacity or PEmax. In stepwise linear regression analysis, FEF25-75 and PImax were shown to be independently related to VO2max, with a combined r and r2 value of 0. 56 and 0.32, respectively. CONCLUSIONS: Lung function indices overall accounted for only approximately 30% of the variance in maximum exercise capacity observed in heart failure patients. The mechanism(s) by which these variables could set exercise limitation in heart failure awaits further investigation. (+info)

Dominant hereditary inclusion-body myopathy gene (IBM3) maps to chromosome region 17p13.1. (4/934)

We recently described an autosomal dominant inclusion-body myopathy characterized by congenital joint contractures, external ophthalmoplegia, and predominantly proximal muscle weakness. A whole-genome scan, performed with 161 polymorphic markers and with DNA from 40 members of one family, indicated strong linkage for markers on chromosome 17p. After analyses with additional markers in the region and with DNA from eight additional family members, a maximum LOD score (Zmax) was detected for marker D17S1303 (Zmax=7.38; recombination fraction (theta)=0). Haplotype analyses showed that the locus (Genome Database locus name: IBM3) is flanked distally by marker D17S945 and proximally by marker D17S969. The positions of cytogenetically localized flanking markers suggest that the location of the IBM3 gene is in chromosome region 17p13.1. Radiation hybrid mapping showed that IBM3 is located in a 2-Mb chromosomal region and that the myosin heavy-chain (MHC) gene cluster, consisting of at least six genes, co-localizes to the same region. This localization raises the possibility that one of the MHC genes clustered in this region may be involved in this disorder. (+info)

Myasthenic syndrome of snake envenomation: a clinical and neurophysiological study. (5/934)

In this prospective study, 65 consecutive patients with neurological manifestations after snake envenomation, were examined in order to describe the natural history of the reversible nature of muscle weakness. Snake envenoming led to a completely reversible muscle paralysis involving the external ocular muscles with sparing of the pupils, muscles of mastication, facial muscles, palatal muscles, neck and proximal limb muscles. The deep tendon reflexes were preserved with no sensory abnormalities. The muscular weakness usually set in within an hour of envenomation and lasted up to 10 days, with fatigability lasting for 12 days. Respiratory muscle paralysis led to ventilatory failure needing ventilation in severely envenomed patients. Motor and sensory nerve conduction were normal with normal resting compound motor action potentials on electromyography. Repetitive nerve stimulation gave rise to a decremental response during high frequency stimulation. The edrophonium test gave negative results. These manifestations are due to abnormalities of neuromuscular transmission and are not typical of myasthenia gravis. As the exact pathophysiology of venom-related neurotoxicity is not known, it is suggested that the neurological manifestations of snake envenoming be designated a myasthenic syndrome. Further studies to isolate the neurotoxin and its mechanism and exact site of blocking at the neuromuscular junction would pave the way for the development of a novel long-acting neuromuscular blocking agent. (+info)

MR imaging of Dejerine-Sottas disease. (6/934)

We report the MR findings in two patients with clinically and histologically proved Dejerine-Sottas disease. One patient had spinal involvement with multiple thickened and clumped nerve roots of the cauda equina; the second had multiple enlarged and enhancing cranial nerves. Although these findings are not specific for Dejerine-Sottas disease, they are suggestive of the diagnosis, which is further corroborated with history and confirmed with sural nerve biopsy and laboratory studies. (+info)

Bethlem myopathy: a slowly progressive congenital muscular dystrophy with contractures. (7/934)

Bethlem myopathy is an early-onset benign autosomal dominant myopathy with contractures caused by mutations in collagen type VI genes. It has been reported that onset occurs in early childhood. We investigated the natural course of Bethlem myopathy in five previously published kindreds and two novel pedigrees, with particular attention to the mode of onset in 23 children and the progression of weakness in 36 adult patients. Our analysis shows that nearly all children exhibit weakness or contractures during the first 2 years of life. Early features include diminished foetal movements, neonatal hypotonia and congenital contractures which are of a dynamic nature during childhood. The course of Bethlem myopathy in adult patients is less benign than previously thought. Due to slow but ongoing progression, more than two-thirds of patients over 50 years of age use a wheelchair. (+info)

Mechanisms of nasal tolerance induction in experimental autoimmune myasthenia gravis: identification of regulatory cells. (8/934)

Autoantigen administration via nasal mucosal tissue can induce systemic tolerance more effectively than oral administration in a number of experimental autoimmune diseases, including Ab-mediated experimental autoimmune myasthenia gravis, a murine model of myasthenia gravis. The mechanisms underlying nasal tolerance induction are not clear. In this study, we show that nasal administration of acetylcholine receptor (AChR) in C57BL/6 mice, before immunizations with AChR in adjuvant, results in delayed onset and reduced muscle weakness compared with control mice. The delayed onset and reduced muscle weakness were associated with decreased AChR-specific lymphocyte proliferation and decreased levels of anti-AChR Abs of the IgG2a and IgG2b isotypes in serum. The clinical and immunological changes in the AChR-pretreated C57BL/6 wild-type (wt) mice were comparable with those observed in AChR-pretreated CD8-/- mice, indicating that CD8+ T cells were not required for the generation of nasal tolerance. AChR-pretreated wt and CD8-/- mice showed augmented TGF-beta and reduced IFN-gamma responses, whereas levels of IL-4 were unaltered. Splenocytes from AChR-pretreated wt and CD8-/- mice, but not from CD4-/- mice, suppressed AChR-specific lymphocyte proliferation. This suppression could be blocked by Abs against TGF-beta. Thus, our results demonstrate that the suppression induced in the present model is independent of CD8+ T cells and suggest the involvement of Ag-specific CD4+ Th3 cells producing TGF-beta. (+info)

Muscle weakness. *Metastatic calcification of the soft tissues. Symptoms of vitamin D toxicity appear several months after ...

https://en.wikipedia.org/wiki/Hypervitaminosis_D

Impaired muscle coordination. *Weakness (muscle). *Loss of sensation. *Impaired vision. *Neurological symptoms ... It has also been used to study the metabolism of other organs such as muscles.[13]:309 ...

https://en.wikipedia.org/wiki/Demyelinating_disease

loss of muscle coordination. *muscle weakness. *visual problems. *hearing problems. *learning disabilities ... are clumps of diseased mitochondria that accumulate in the subsarcolemmal region of the muscle fiber and appear when muscle is ... As a rule, mitochondrial diseases are worse when the defective mitochondria are present in the muscles, cerebrum, or nerves,[7] ... Mitochondrial diseases are usually detected by analysing muscle samples, where the presence of these organelles is higher. The ...

https://en.wikipedia.org/wiki/Mitochondrial_disease

Signs and symptoms can include diffuse body pains, muscle weakness, and fragility of the bones. In addition to low systemic ... Proximal muscles are weak, and there is difficulty in climbing up stairs and getting up from a squatting position. ...

https://en.wikipedia.org/wiki/Osteomalacia

... muscle weakness is not considered a reliable sign of leprosy.[59] In some cases, acid-fast leprosy bacilli in skin smears are ... and muscle weaknesses or paralysis in the area affected.[30] The skin can crack and if the skin injuries are not carefully ... muscle weakness; reddish skin; smooth, shiny, diffuse thickening of facial skin, ear, and hand; loss of sensation in fingers ... An infected person may also experience muscle weakness and poor eyesight.[3] Leprosy symptoms may begin within one year, ...

https://en.wikipedia.org/wiki/Leprosy

Muscle weakness (rapidly progressive); frequent falls; difficulty with motor skills (running, hopping, jumping); progressive ... muscle deformities (contractures of heels, legs; pseudohypertrophy of calf muscles) ... Affects skeletal and smooth muscle as well as the eye, heart, endocrine system, and central nervous system; clinical findings, ... Lipids accumulate in the brain; neurological dysfunction; progressive weakness and loss of motor skills; decreased social ...

https://en.wikipedia.org/wiki/Gene_testing

Becker's muscular dystrophy, a milder form of Duchenne, which causes slowly progressive muscle weakness of the legs and pelvis. ... Spinal and bulbar muscular atrophy; muscle cramps and progressive weakness. *Lesch-Nyhan syndrome; neurologic dysfunction, ... It is characterized by rapid progression of muscle degeneration, eventually leading to loss of skeletal muscle control, ... Spinal muscular atrophy caused by UBE1 gene mutation; weakness due to loss of the motor neurons of the spinal cord and ...

https://en.wikipedia.org/wiki/X-linked_recessive_inheritance

severe muscle weakness or paralysis. *Hyperphosphatemia. Like potassium, phosphates are also predominantly intracellular. ...

https://en.wikipedia.org/wiki/Tumor_lysis_syndrome

Motor symptoms consistent of muscle weakness; sensory symptoms or paresthesias consist of numbness or tingling in the areas ... intrinsic muscles of the hand. The specific type of symptoms may be either motor, sensory, or mixed motor/sensory type symptoms ... Ulnar nerve damage that causes paralysis to these muscles will result in a characteristic ulnar claw position of the hand at ... A simple way of differentiating between significant median and ulnar nerve injury is by testing for weakness in flexing and ...

https://en.wikipedia.org/wiki/Cubital_tunnel_syndrome

Diabetic amyotrophy is muscle weakness due to neuropathy.. *Diabetic retinopathy, growth of friable and poor-quality new blood ... Diabetic myonecrosis ('muscle wasting'). *Peripheral vascular disease, which contributes to intermittent claudication (exertion ... Diabetic cardiomyopathy, damage to the heart muscle, leading to impaired relaxation and filling of the heart with blood ( ...

https://en.wikipedia.org/wiki/Complications_of_diabetes_mellitus

Margolin, L (2004). "Impaired rehabilitation secondary to muscle weakness induced by meropenem". Clinical Drug Investigation. ...

https://en.wikipedia.org/wiki/Meropenem

... this may lead to weakness of the muscles of the face, swallowing difficulties and sometimes weakness of the eye muscles.[4] In ... Ataxia, eye muscle weakness, areflexia but usually no limb weakness This variant occurs more commonly in men than in women (2:1 ... Sensory symptoms and muscle weakness, often with cranial nerve weakness and autonomic involvement Most common in Europe and ... Weakness particularly of the throat muscles, and face, neck, and shoulder muscles - Generally normal, sometimes axonal ...

https://en.wikipedia.org/wiki/Guillain-Barre

Affected dogs have tremors, muscle weakness, and trouble walking. Symptoms slowly increase until limb paralysis begins to occur ... It can cause seizures, muscle stiffness, and ataxia, but is more commonly found in Staffordshire Bull Terriers.[19] A ...

https://en.wikipedia.org/wiki/West_Highland_White_Terrier

It remains unclear how this disruption in mitochondrial energy production leads to muscle weakness, vision loss, and the other ... muscle weakness; and problems with balance and coordination (ataxia). Many affected individuals also have vision loss caused by ... "The neurogenic weakness, ataxia and retinitis pigmentosa (NARP) syndrome mtDNA mutation (T8993G) triggers muscle ATPase ...

https://en.wikipedia.org/wiki/Neuropathy,_ataxia,_and_retinitis_pigmentosa

... muscle weakness; liver problems; unusual facial features; and their breath, sweat, or urine may have a smell resembling boiled ...

https://en.wikipedia.org/wiki/Hypermethioninemia

The muscle weakness is generally symmetric, proximal, and slowly progressive. In most cases, pain is not present with LGMD, and ... damage muscles permanently due to intense muscle contraction.[12] Physical therapy may be required to maintain as much muscle ... The result of the defect is that the muscles cannot properly form certain proteins needed for normal muscle function. Several ... It is characterised by progressive muscle wasting which affects predominantly hip and shoulder muscles. LGMD has an autosomal ...

https://en.wikipedia.org/wiki/Dysferlinopathy

The disease can present as acute ataxia without muscle weakness. Patients may report minor sensory symptoms, such as local ... Early signs of tick poisoning could be a change of an animals' 'voice', weakness in the back legs or vomiting.[citation needed] ... The toxin causes symptoms within 2-7 days, beginning with weakness in both legs that progresses to paralysis. The paralysis ... Electromyographic (EMG) studies usually show a variable reduction in the amplitude of compound muscle action potentials, but no ...

https://en.wikipedia.org/wiki/Tick_paralysis

Muscle weakness. Paradoxical reactionsEdit. Although unusual, the following paradoxical reactions have been shown to occur: * ... This results in effects including reduced anxiety, muscle relaxant, antidepressant and anticonvulsant activity.[78] The ... The therapeutic properties of alprazolam are similar to other benzodiazepines and include anxiolytic, anticonvulsant, muscle ... Some common symptoms of alprazolam discontinuation include malaise, weakness, insomnia, tachycardia, lightheadedness, and ...

https://en.m.wikipedia.org/wiki/Alprazolam

Symptoms may include lethargy, impaired mental functioning; irritability; shaking, twitching, weakness in arm and leg muscles; ... Epinephrine prepares the muscles and respiratory system for activity in the case of a "fight and flight" response. Lastly, ... insulin tells muscles to take up excess glucose for storage. Glucagon responds to too low of a blood glucose level; it informs ... Glucose is stored in skeletal muscle and liver cells in the form of glycogen;[2] in fasted individuals, blood glucose is ...

https://en.wikipedia.org/wiki/Blood_sugar

Health effects include sensory impairment, dermatitis, memory loss, and muscle weakness. Exposure in-utero causes fetal ...

https://en.wikipedia.org/wiki/WEEE

Paralysis, muscle weakness. *Difficulty in urinating. *Confusion, personality changes, bizarre behaviour. *Loss of memory, ...

https://en.m.wikipedia.org/wiki/Decompression_illness

Symptoms include decreased or absent reflexes and muscle tone, weakness, or paralysis. It often occurs in the rear legs and is ... Dancing Doberman disease progresses over a few years to rear leg weakness and muscle atrophy. No treatment is known, but most ... Symptoms include rear limb weakness, decreased reflexes, muscle atrophy, megaesophagus, and loss of bark. No treatment is known ... Distal symmetric polyneuropathy symptoms include atrophy of the distal leg muscles and the muscles of the head, and rear limb ...

https://en.wikipedia.org/wiki/Polyneuropathy_in_dogs_and_cats

The myopathic form is characterized by muscle pain and weakness following vigorous exercise. Treatment generally includes ... Cohen PP (Sep 1939). "Transamination in pigeon breast muscle". The Biochemical Journal. 33 (9): 1478-87. doi:10.1042/bj0331478 ... Muscle & Nerve. 27 (2): 180-7. doi:10.1002/mus.10300. PMID 12548525. Bowen, R. "Terminal Transferase". Biotechnology and ... after observing the disappearance of glutamic acid added to pigeon breast muscle. This observance was later verified by the ...

https://en.wikipedia.org/wiki/Transferase

Muscle dysfunction and weakness - This occurs in major muscles, but also may manifest as: diplopia, low cardiac output, ... and respiratory depression due to respiratory muscle weakness.. *Mental status changes - This may range from irritability to ... such as muscle) from the serum. However, that this effect is not seen in metabolic alkalosis, for in such cases the cause of ... Symptoms may include weakness, trouble breathing, and loss of appetite.[1] Complications may include seizures, coma, ...

https://en.wikipedia.org/wiki/Hypophosphatemia

They can often have muscle weakness. These symptoms are caused by the lack of creatine in skeletal muscles and in the brain. ... For treatment at any age, even if intellectual disability was present, all individuals showed improvement in muscle weakness. ... Individuals with AGAT deficiency are intellectually disabled and have muscle weakness. The symptoms of AGAT deficiency are ... there is significant phenotypic overlap with the most common presenting symptoms of intellectual disability and muscle weakness ...

https://en.wikipedia.org/wiki/Arginine:glycine_amidinotransferase_deficiency

Muscle weakness caused by recurrent infections. Symptoms for females: Very rarely seen hearing loss that begins in adulthood ( ... Weak muscle tone - Hypotonia. Impaired muscle coordination - Ataxia. Developmental delay. Intellectual disability. Vision loss ... Arts syndrome should be included in the differential diagnosis of infantile hypotonia and weakness aggravated by recurrent ...

https://en.wikipedia.org/wiki/Arts_syndrome

Motor symptoms consistent of muscle weakness; sensory symptoms or paresthesias consist of numbness or tingling in the areas ... compression by anterior scalene muscles Problems originating in the chest: compression by pectoralis minor muscles Brachial ... Ulnar nerve damage that causes paralysis to these muscles will result in a characteristic ulnar claw position of the hand at ... If the impingement is not corrected, the numbness may become constant and progress to hand weakness. A characteristic resting ...

https://en.wikipedia.org/wiki/Ulnar_nerve_entrapment

The overuse and underuse of muscles also may contribute to muscle weakness. Another theory is that people who have recovered ... Changes in muscle strength are determined in specific muscle groups using various muscle scales that quantify] strength, such ... This causes muscle weakness and paralysis. Restoration of nerve function may occur in some fibers a second time, but eventually ... decreased muscle mass), weakness, pain, and fatigue in limbs that were originally affected or in limbs that did not seem to ...

https://en.wikipedia.org/wiki/Post-polio_syndrome

The term atony comes from the Ancient Greek ἀτονία (atonia), "slackness, debility". Hypotonia Muscle weakness v t e. ... In medicine, atony or atonia is a condition in which a muscle has lost its strength. It is frequently associated with the ... Atony can also refer to the paralyzed or extremely relaxed state of skeletal muscles in rapid eye movement sleep (REM sleep) in ...

https://en.wikipedia.org/wiki/Atony

... just so many little bones and muscles-so we can only have come from one set of ancestors no matter what our color, the shape of ... Ruth hated her mother's sorrow and viewed it as a weakness. For her, the greatest taboos in life were crying in front of people ... and hoped to find possible weaknesses, or means of persuasion that had been missed. ...

https://en.m.wikipedia.org/wiki/Ruth_Benedict

When a muscle atrophies, this leads to muscle weakness, since the ability to exert force is related to mass. Modern medicine's ... Muscle atrophy is defined as a decrease in the mass of the muscle; it can be a partial or complete wasting away of muscle, and ... Moreover, starvation eventually leads to muscle atrophy. Disuse of the muscles, such as when muscle tissue is immobilized for ... Muscle atrophy can be opposed by the signaling pathways which induce muscle hypertrophy, or an increase in muscle size. ...

https://en.wikipedia.org/wiki/Muscle_atrophy

... muscle atrophy, osteoporosis, and kidney stones.[7] ... hip and shoulder weakness. *swelling of feet/legs. *diabetes ...

https://en.m.wikipedia.org/wiki/Cushing's_disease

It may be progressive and can involve cognitive impairment, brain fog, migraines, balance issues, weakness in the legs, awkward ... People who have nonspecific, subjective symptoms such as fatigue, joint and muscle aches, or cognitive difficulties for more ... joint or muscle pains or fatigue.[173] These symptoms usually are mild and nondisabling.[173] ... Some people develop a fever and muscle and joint pains from treatment which may last for one or two days.[2] In those who ...

https://en.wikipedia.org/wiki/Lyme_disease

When the radiating pain is associated with numbness or weakness, the diagnosis is radiculopathy if the lesion is at the nerve ... gluteal muscles, back of the upper thigh, calf, and foot as often secondary to nerve root irritation from a spinal disc ... which may lead to pain in that nerve's distribution without weakness as opposed to radiculopathy. ...

https://en.m.wikipedia.org/wiki/Radicular_pain

... weakness, headaches, vomiting, and muscle pains.[1] Less commonly there may be bleeding from the mouth or gastrointestinal ... Nonspecific symptoms include fever, facial swelling, and muscle fatigue, as well as conjunctivitis and mucosal bleeding. The ...

https://en.wikipedia.org/wiki/Lassa_fever

Test of color blindness with the indication of the weaknesses in various colors, quantifies green red blue deficiency (ISHIHARA ... Extraocular muscles. *Harada-Ito procedure. *Strabismus surgery. *Botulinum toxin therapy of strabismus ...

https://en.wikipedia.org/wiki/Ishihara_Test

Statins can cause damage to muscle cells. This can cause weakness and muscle pain. The worse problem though is that when muscle ... So if people take statins and get muscle pain or weakness, stop the medicine and see a doctor. ... The kidney removes the muscle protein from the blood. If the kidney takes up too much protein, it can be hurt. If it is bad ... A heart attack is also called a myocardial infarction. Myocardial means relating to the heart muscle. Infarction means death of ...

https://simple.wikipedia.org/wiki/Hypercholesterolemia

Other key factors include storage of spurious drugs by chemists, weaknesses in drug distribution system, lack of awareness ... diluents can produce serious abscesses and pain if the user misses the vein and injects into muscle tissue."[40] "Diluents and ...

https://en.wikipedia.org/wiki/Counterfeit_medicine

Muscles all over the body are used when singing/acting. Stretching helps to activate and prepare the large muscle groups that ... abilities of the singers/actors at hand without the distraction of the repertoire and to specifically train areas of weakness. ... Often we also try and use our jaw for articulation, which creates unnecessary tension in the facial muscles and tongue. A good ... Changing pitch undoubtedly stretches the vocal muscles,[3] and singing or projecting one's voice for acting requires a more ...

https://en.wikipedia.org/wiki/Vocal_warm_up

muscle weakness[17]. *paralysis[17]. *arrhythmia[17]. hyperkalemia *amilorides[17]. *triamterenes[17] ...

https://en.m.wikipedia.org/wiki/Diuretic

... or sudden weakness or numbness. A TIA may cause sudden dimming or loss of vision, aphasia, slurred speech, and mental confusion ... and muscle wasting may be difficult.[35] Treatment decision often involve complex ethical choices and can strain family ...

https://en.m.wikipedia.org/wiki/Brain_hypoxia

Symptoms of McArdle disease include muscle weakness, myalgia, and lack of endurance, all stemming from low glucose levels in ... whereas the liver and muscle types are predominant in adult liver and skeletal muscle, respectively.[5] ... Mutations in the muscle isoform of glycogen phosphorylase (PYGM) are associated with glycogen storage disease type V (GSD V, ... The glycogen phosphorylase monomer is a large protein, composed of 842 amino acids with a mass of 97.434 kDa in muscle cells. ...

https://en.wikipedia.org/wiki/Glycogen_phosphorylase

Usually manifesting itself between 20 and 40 years of age, it is characterized by pain, paresthesia, muscular weakness and ... or muscle may be performed, which can show signs of denervation and amyloid deposition with response to anti-TTR antibodies.[8] ... slowed the progression of FAP over a 36-month period and importantly reversed the weight loss and muscle wasting associated ... "Muscle & Nerve. 40 (3): 363-370. doi:10.1002/mus.21332. PMC 2735590. PMID 19618439.. ...

https://en.wikipedia.org/wiki/Transthyretin-related_hereditary_amyloidosis

Weight loss and muscle weakness, as well as the presence of other diseases, should also be taken into account.[22] ... COPD often leads to reduction in physical activity, in part due to shortness of breath.[33] In later stages of COPD muscle ... People with COPD who are underweight can improve their breathing muscle strength by increasing their calorie intake.[5] When ... muscle wasting, osteoporosis, lung cancer, anxiety disorder, sexual dysfunction, and depression.[2][39] In those with severe ...

https://en.wikipedia.org/wiki/COPD

During REM sleep, in particular, muscle tone of the throat and neck, as well as the vast majority of all skeletal muscles, is ... Complications include ulceration, infection, nerve weakness or numbness and swelling. These complications occur in less than 1 ... Old age is often accompanied by muscular and neurological loss of muscle tone of the upper airway. Decreased muscle tone is ... The chest muscles and diaphragm contract and the entire body may thrash and struggle.[citation needed] ...

https://en.m.wikipedia.org/wiki/Obstructive_sleep_apnea

Muscle weakness is not a feature of this phase, but some people experience muscle stiffness. Additional features can include ... muscle weakness, and sometimes cardiac or digestive dysfunction. Fatigue is present to some degree, while the muscle pain ( ... The initial, acute phase of EMS, which last for three to six months, presents as trouble with breathing and muscle problems, ...

https://en.wikipedia.org/wiki/Eosinophilia–myalgia_syndrome

Less commonly, arteries of the brain are affected; this may lead to transient ischemic attacks (brief episodes of weakness on ... this can cause pain in the calf muscles during walking that resolves with rest (intermittent claudication) and problems due to ...

https://en.m.wikipedia.org/wiki/Familial_hypercholesterolemia

Unilateral (from Latin unus 'one'): on one side of the body.[28] For example, a stroke can result in unilateral weakness, ... Inter- (from Latin inter 'between') is used to indicate something that is between.[15] For example, the intercostal muscles run ... The palmar fascia is palmar to the tendons of muscles which flex the fingers, and the dorsal venous arch is so named because it ... meaning weakness on one side of the body.. Varus (from Latin 'bow-legged') and valgus (from Latin 'knock-kneed') are terms used ...

https://en.wikipedia.org/wiki/Dorsum_

... muscle twitching, and gradually worsening weakness due to muscles decreasing in size.[2] It may begin with weakness in the arms ... Stiff muscles, muscle twitching, gradually worsening weakness[2]. Complications. Difficulty in speaking, swallowing, breathing[ ... The disorder causes muscle weakness, atrophy, and muscle spasms throughout the body due to the degeneration of the upper motor ... Symptoms of lower motor neuron degeneration include muscle weakness and atrophy, muscle cramps, and fleeting twitches of ...

https://en.wikipedia.org/wiki/Lou_Gehrig's_disease

Individuals affected by Gitelman's syndrome often complain of severe muscle cramps or weakness, numbness, thirst, waking up at ... night to urinate, salt cravings, abnormal sensations, chondrocalcinosis, or weakness expressed as extreme fatigue or ...

https://en.m.wikipedia.org/wiki/Gitelman_syndrome

Ernst, Robert (1991). Weakness Is a Crime: The Life of Bernarr Macfadden. Syracuse University Press. pp. 118, 179.. ... Bennett, Jim (2016). Muscles, Sex, Money, & Fame. pp. 487-. ISBN 978-1-365-55689-0. .. ... Weakness Is a Crime: The Life of Bernarr Macfadden. Syracuse, NY: Syracuse University Press, 1991. ...

https://en.wikipedia.org/wiki/Bernarr_Macfadden

About 70% of those who have narcolepsy also have cataplexy, a sudden weakness in the motor muscles that can result in collapse ... sudden and transient loss of muscle tone while awake), and sleeping sickness (disruption of sleep cycle due to infection). ...

https://en.wikipedia.org/wiki/Sleeping_disorders

The progression is slow, with symptoms of weakness and walking difficulties sometimes not presenting until middle age. Early ... Diseases of myoneural junction and muscle / neuromuscular disease (G70-G73, 358-359) ... as there is ongoing muscle cell death. Patients with Bethlem myopathy may expect a normal life span and continued mobility into ... "Collagen VI related muscle disorders" (PDF). J. Med. Genet. 42 (9): 673-85. doi:10.1136/jmg.2002.002311. PMC 1736127 . PMID ...

https://en.wikipedia.org/wiki/Bethlem_myopathy

... muscle cramp and general weakness".[23] Ketosis induced by a low-carbohydrate diet has led to reported cases of ketoacidosis, a ... A low-carbohydrate diet has been found to reduce endurance capacity for intense exercise efforts, and depleted muscle glycogen ...

https://en.wikipedia.org/wiki/Low-glycemic_diet

ALS is characterized by stiff muscles, muscle twitching, and progressive muscle weakness from muscle wasting. The parts of the ... General symptoms include overall muscle weakness and poor muscle tone including extremities and respiratory muscles leading to ... In general, proximal muscle are always affected more than distal muscle. Genetic cause[edit]. Spinal muscular atrophy is linked ... All skeletal muscles in the body are controlled by motor neurons that communicate signals from the brain to the muscle through ...

https://en.wikipedia.org/wiki/Epigenetics_of_neurodegenerative_diseases

... muscle wasting, weakness, neurological deficits, dizziness, irritability, lethargy, and depression.[8] ... Calorie restriction preserves muscle tissue in nonhuman primates[51][52] and rodents.[53][54] Mechanisms include reduced muscle ... and preserved muscle stem cell function.[55] Muscle tissue grows when stimulated, so it has been suggested that the calorie- ... Short-term studies in humans report a loss of muscle mass and strength and reduced bone mineral density.[9] However, whether or ...

https://en.wikipedia.org/wiki/Caloric_restriction

... delivering the blow not with his muscles but with the combined weight of himself and his charging stallion (White, 2)." White ... he would have made the weakness of his argument less obvious, but the fundamental failure would remain: the stirrup cannot ...

https://en.m.wikipedia.org/wiki/Technological_determinism

The brain can be exercised like muscle. Games and puzzles such as connecting nine dots with three lines, using thinking like a ... Former detective Greg Walsh exposes memory weakness in a staged scenario where a guy's camera is stolen and the eyewitnesses ...

https://en.wikipedia.org/wiki/Brain_Games_

Tips for clinicians on how to evaluate a patient presenting with acute flaccid weakness. ... Patients with weakness in the hip muscles might not be able to lift the leg on the affected side, possibly not clearing the toe ... Patients with weakness in the neck and muscles of the shoulder girdle that control this movement might not be able to shrug ... Unexplained proximal muscle weakness in patients can occur in some neurologic conditions and can be easily missed during exams ...

https://www.cdc.gov/acute-flaccid-myelitis/hcp/clinicians-health-departments/evaluation-weakness.html

Find out more about the causes of muscle weakness here. ... Muscle weakness can be a symptom of many chronic conditions and ... Influenza can cause muscle weakness, a fever, and a sore throat.. Some infectious diseases can cause muscle weakness. They ... Some illicit drugs, such as cocaine, can also cause muscle weakness.. Rare causes. Rare causes of muscle weakness include ... Muscle weakness is a lack of strength in the muscles. They may not contract or move as easily as before.. Some chronic medical ...

https://www.medicalnewstoday.com/articles/325876.php

Find out more about the causes of muscle weakness here. ... Muscle weakness can be a symptom of many chronic conditions and ... Influenza can cause muscle weakness, a fever, and a sore throat.. Some infectious diseases can cause muscle weakness. They ... Rare causes of muscle weakness include dermatomyositis, polymyositis, and rheumatoid arthritis.. If a persons muscle weakness ... Muscle weakness is a lack of strength in the muscles. They may not contract or move as easily as before. ...

https://www.medicalnewstoday.com/articles/325876

But that doesnt mean it will cause them problems.Theres some evidence from earlier research that pelvic muscle weakness could ... that she would have expected to see a more clear relationship between muscle weakness and pelvic problems if muscle strength ... We dont know the significance of the pelvic muscle weakness, said Dr. Victoria Handa, one of the authors of the study and a ... or perhaps more time needs to pass before pelvic muscle weakness begins to take its toll.Her group is continuing a longer-term ...

https://www.reuters.com/article/us-birth-idUSBRE89O1L520121025

Learn what causes MS muscle weakness, ways to treat it, and how you can work with your healthcare team to minimize its effects. ... Nerve damage can leave your muscles stiff or weak, reducing your ability to move and perform everyday activities. ... Types of muscle weakness. When nerve fibers are damaged, your brain cant effectively send your muscles the signals they need ... A combination of cardio and strength-training exercises can combat muscle weakness and give you more energy. If your muscles ...

https://www.healthline.com/health/multiple-sclerosis/muscle-weakness

Does anyone push themselves to the point of muscle weakness? When it happens to me, it feels like im moving through cement as ... I have muscle weakness in arms and legs. The muscles just stop working & I have to sit until I can resume walking...slowly. ... my muscles will eventually seize up and i wont be able to move those muscles. but i can move other muscles that i havent worn ... I try not to push myself to the point of muscle weakness, but I have done it several times. Sometimes it doesnt take very much ...

https://www.dailystrength.org/group/chronic-fatigue-syndrome/discussion/muscle-weakne_2

More work is needed to determine whether the muscle weakness is a cause or effect of this most common type of headache, they ... Previous studies have found that muscle strength and weakness were associated with tension-type headaches, Madsen and his ... Neck flexor muscles were tested when they bent their heads forward. The strength of the trapezius muscle running down the back ... "If you do a repetitive motion or youre lifting things, youre going to build certain muscles and not others," said Diamond, ...

https://uk.reuters.com/article/us-tension-headache-muscle-strength/muscle-weakness-may-contribute-to-tension-headaches-idUKKBN0NM41420150501

... neuropathy and muscle weakness, with a wealth of fact sheets, expert advice, community perspective, the latest news/research, ... Muscle weakness (like rhabimyosis). Have you ever heard of Diovan (blood pressure med) causing an extended muscle weakness. I ... What Are the Signs of MT? One of the most common signs of MT is muscle weakness (myopathy). If muscle cells cant get enough ... The AZT in the Combivir can cause a myopathy (muscle condition) that can result in muscle weakness/pain. The lamivudine in the ...

http://www.thebody.com/h/neuropathy-and-muscle-weakness.html

Muscle weakness occurs when your full effort doesnt produce a normal contraction. Discover causes like multiple sclerosis, the ... Treatment options for muscle weakness. Once theyve determined the cause of your muscle weakness, your healthcare provider will ... If you develop persistent muscle weakness, or muscle weakness with no apparent cause or normal explanation, it may be a sign of ... Diagnosing the underlying cause of muscle weakness. If you experience muscle weakness for which theres no normal explanation, ...

https://www.healthline.com/health/muscle-weakness

Does anyone else have muscle weakness issues that causes them to not be able to use the restroom? Most of the time, I dont ... Muscle Weakness - Bathroom Issues kelly97 Hi Everyone, Does anyone else have muscle weakness issues that causes them to not be ... Muscle Weakness - Bathroom Issues. Hi Everyone, Does anyone else have muscle weakness issues that causes them to not be able to ... The muscles dont want to work and pushing does nothing. I have. Brought this up to me dr several times and have tried all ...

https://www.medhelp.org/posts/Multiple-Sclerosis/Muscle-Weakness---Bathroom-Issues/show/1625876

"Whats different here is that we are focused not on muscle mass but on muscle function. More muscle doesnt help if it is not ... "The basis for muscle weakness is the same." Extreme exercise like that done by marathon runners also springs the same sort of ... ties the weakness of aging to leaky calcium channels inside muscle cells. But there is some good news: the researchers say a ... Calcium inside of muscle cells is usually kept contained. When it is allowed to leak out into the cell that calcium itself is ...

http://www.redorbit.com/news/health/2089411/weakness_in_aging_tied_to_leaky_muscles/

I have neuromuscular disorder which causes muscle weakness. My doc has prescribed testosterone which has been compounded into a ... Testosterone for muscle weakness in females. I have neuromuscular disorder which causes muscle weakness. My doc has prescribed ... I have neuromuscular disorder which causes muscle weakness. My doc has prescribed testosterone which has been compounded into a ... My doc insists I need the testosterone for my muscle strength. Could the testosterone effects be permanent? I dont want to be ...

http://www.medhelp.org/posts/Neurology/Testosterone-for-muscle-weakness-in-females/show/1852642

... , Motor Delay in Children, Pediatric Neuromuscular Disorder, Congenital Neuromuscular Disorder, ... Muscle Weakness in Children. Aka: Muscle Weakness in Children, Motor Delay in Children, Pediatric Neuromuscular Disorder, ... Serum Aspartate Aminotransferase increased (from muscle breakdown). *Serum Alanine Aminotransferasencreased (from muscle ... manifestations include muscle weakness, fasciculation, atrophy, spasm, myokymia, hypertonic, hypotonia and myalgias.. ...

https://fpnotebook.com/legacy/Peds/Sx/MsclWknsInChldrn.htm

Muscle Weakness And Stiffness Or Decreased Movement and their most common related conditions. ... Fatigue, Muscle Stiffness (Rigidity), Muscle Weakness And Stiffness Or Decreased Movement. Reviewed on 6/15/2020 ...

https://www.medicinenet.com/fatigue_muscle_rigidity_muscle_weakness_stiffness/multisymptoms.htm

... Muscle weaknessClassification & external resources ICD-10 M62.8 ICD-9 728.87 (728.9 before 10/01/03) DiseasesDB ... On the other hand, various topic locations for muscle weakness are central, neural and peripheral. Central muscle weakness is ... In addition to true/perceived, muscle weakness can also be central, neural and peripheral. Central muscle weakness manifests as ... Muscle Weakness Coding Checklist by Jun Mapili, PT, MAEd. *^ Enoka RM, Stuart DG (1992). "Neurobiology of muscle fatigue". J. ...

https://www.bionity.com/en/encyclopedia/Muscle_weakness.html

XLH is often perceived as a childs disease, but this rare, debilitating bone disease is a genetic disease that continues to progress with age. Well meet a family that has been diagnosed with X-linked Hypophosphatemia and is now living with the reality of the disease. Well also hear from Dr. Jan De Beur, an endocrinologist […]. ...

http://thebalancingact.com/tag/muscle-pain-and-weakness/

3. I have no pain and the muscle weakness affects my whole body (legs, arms, core, chest, back, etc...). The weakness seems to ... Muscle Biopsy??? Biyak123. Fibromyalgia. 2. 12-25-2008 09:57 AM. Muscle pain Mark_B. Amyotrophic Lateral Sclerosis (ALS). 2. 08 ... Re: Muscle Weakness - Unexplained Have you been on the CDC site to what they have to say about this? I got it when I was a kid ... Re: Muscle Weakness - Unexplained Jwood,. I am a 23 year old male and have the same symptoms you described for your son. I ...

https://www.healthboards.com/boards/myositis/757344-muscle-weakness-unexplained.html

... some days with arms and neck muscle weakness. I find ... ... i have been having frequent feelings of both calf muscle ... i have been having frequent feelings of both calf muscle weakness for about 2 months now, some days with arms and neck muscle ... Lyme too which can effect your muscles Ive never been given any. medication specifically for this. I had a lot of muscle ... I do experience weakness in my arms and legs too. I. attribute that to chronic fatigue. When that happens, I am able. to lie ...

https://www.healingwell.com/community/default.aspx?f=15&m=3386381

Muscle weakness impairs health. It slows metabolism, puts more pressure on the joints, hurts posture, throws off balance, and ... Fight back against muscle weakness. Pinpoint the cause and take steps to preserve your mobility and independence.. ... Muscle weakness is sneaky. It often appears gradually and makes once-simple tasks harder - like having to rock back and forth ... More than an inconvenience, muscle weakness has a domino effect on health. It slows your metabolism (how fast your body burns ...

https://www.health.harvard.edu/aging/fight-back-against-muscle-weakness

Popping ibuprofen to help with pain could lead to muscle weakness. ... The low-dose aspirin group had more muscle inflammation, and Dr. Lundberg theorizes that muscle growth may depend on this ... If youre young and hoping to build muscle mass and strength, you may want to try 75 mg of aspirin or take acetaminophen- ... The researchers measured the volunteers muscle mass and strength at the beginning of the study and again at the end. ...

https://www.rd.com/health/fitness/ibuprofen-muscle-weakness/

... stimulation-in the form of kinesiology tape-on muscle weakness that is neurophysiologically similar to the muscle weakness seen ... The study, "Tactile stimulation with Kinesiology tape alleviates muscle weakness attributable to attenuation of Ia afferents," ... weakness." In order to create a neurophysiologically similar weakness among the studys healthy subjects, the researchers used ... When weakness of the quadriceps femoris was induced via prolonged vibration stimulation, the use of kinesiology tape around the ...

https://www.massagemag.com/kinesiology-tape-may-reduce-muscle-weakness-25063/

Ten kids have shown up with a mystifying muscle weakness that may be related to an outbreak of enterovirus D68, doctors said ... Ten kids have shown up with a mystifying muscle weakness that may be related to an outbreak of enterovirus D68, doctors said ... Other viruses can also cause paralysis or muscle weakness and in the latest cases, none of the children has been actually ... The Centers for Disease Control and Prevention says its investigating the cases of muscle weakness and has asked other doctors ...

https://www.nbcnews.com/health/kids-health/10-denver-area-kids-have-strange-muscle-weakness-n214391

Find best Pediatric Neurologists for Pediatric Muscle Weakness / Palsy near you & make an appointment online instantly! ... Pediatric Muscle Weakness / Palsy appointments are guaranteed and free! ... Book Top Pediatric Muscle Weakness / Palsy Doctors Near You. Need to make a doctor appointment for Pediatric Muscle Weakness / ... Doctors for Pediatric Muscle Weakness / Palsy Near You. who accept. enter your insurance to view in-network doctorstap to enter ...

https://www.zocdoc.com/procedure/pediatric-muscle-weakness-palsy-2270

Three children suffering from muscle weakness are being tested in Toronto to determine whether theyve been infected with ... Three children suffering from muscle weakness are being tested in Toronto to determine whether theyve been infected with ...

https://www.thestar.com/life/health_wellness/2014/10/03/toronto_doctors_testing_3_kids_with_muscle_weakness_for_enterovirus_d68.html

... a non-inherited autoimmune form of muscle weakness, in an animal model of the disease. ... Autoantibodies target the part of these receptors found on the outer cell surface of muscle, leading to weakness. ... Efficacy of potential therapy for autoimmune disorder of muscle weakness. University of Pennsylvania School of Medicine ... PHILADELPHIA -- Nearly 60,000 Americans suffer from myasthenia gravis (MG), a non-inherited autoimmune form of muscle weakness ...

https://www.eurekalert.org/pub_releases/2014-10/uops-eop100714.php

Weakness in those muscles has long been thought to play a role in injuries to pitchers, according to C. David Geier Jr., MD, of ... Three Strikes: Preseason Muscle Weakness Linked to Pitchers Injuries. TORONTO -- Baseball managers take note: preseason ... Weakness of the prone external rotation was significantly associated (at P=0.003) with upper extremity injury requiring ... Also associated with risk of surgery was weakness of the seated external rotation strength, at P=0.044. *Strength of the ...

https://www.medpagetoday.com/surgery/orthopedics/15029

Respiratory muscle weakness is common among patients who have neuromuscular disease () . It can be acute (eg, Guillain-Barré ... Respiratory muscle weakness due to neuromuscular disease: Clinical manifestations and evaluation. Author. Scott K Epstein, MD. ... Respiratory muscle weakness is common among patients who have neuromuscular disease (table 1) [1,2]. It can be acute (eg, ... Respiratory muscle (inspiratory, expiratory, upper airway) weakness due to neuromuscular disease can cause insufficient ...

https://www.uptodate.com/contents/respiratory-muscle-weakness-due-to-neuromuscular-disease-clinical-manifestations-and-evaluation

... weakness, and fatigue, especially in my legs. At times, I cant even walk. I think I may have ... Severe Muscle Aches and Weakness The last year, Ive had severe muscle aches, weakness, and fatigue, especially in my legs. At ... Re: Severe Muscle Aches and Weakness What was your TSH? I have been having the same symptoms. Weakness in my legs and arms, sob ... They may want to just have a skin or muscle biopsy.. The pattern of the muscle weakness and pain can be a big aid to figuring ...

https://www.healthboards.com/boards/myositis/701133-severe-muscle-aches-weakness.html

Evaluation of the Patient with Muscle Weakness [Article] Muscle weakness is a common complaint among patients presenting to ... Recognition and Management of Motor Delay and Muscle Weakness in Children [Article] ... Guillain-Barré syndrome consists of a group of neuropathic conditions characterized by progressive weakness and diminished or ... Diagnosis begins with a patient history distinguishing weakness from fatigue or asthenia, separate conditions with different ...

https://www.aafp.org/afp/viewRelatedDocumentsByKeyword.htm?keywordId=2390

Diagnosis begins with a patient history distinguishing weakness from fatigue or asthenia, separate conditions with different ... Muscle weakness is a common complaint among patients presenting to family physicians. ... etiologies that can coexist with, or be confused for, weakness. The pattern and severity … ... Muscle weakness is a common complaint among patients presenting to family physicians. Diagnosis begins with a patient history ...

https://pubmed.ncbi.nlm.nih.gov/15832536/?dopt=Abstract

Weakness, like other MS symptoms , may come and go as you experience flare-ups and remissions during the course of the disease. (healthline.com)
Even muscles that aren't directly affected by MS can become weak if symptoms like fatigue and pain prevent you from moving and exercising them. (healthline.com)
You may need to try different treatments until you find one that relieves your muscle weakness and other symptoms. (healthline.com)
Your treatment plan will depend on the underlying cause of your muscle weakness, as well as the severity of your symptoms. (healthline.com)
For example, acute inflammatory demyelinating polyneuropathy (AIDP) can result in muscle weakness, sensory problems, cranial issues, sensory symptoms, nerve weakness and autonomic involvement. (news-medical.net)
Substantial weakness of quadriceps resulting from neurophysiological abnormalities is typically observed following knee injury or associated pathology and remains long after other symptoms abate," states the study's author. (massagemag.com)
The Centers for Disease Control and Prevention says it's investigating the cases of muscle weakness and has asked other doctors across the country to be on the lookout for similar symptoms. (nbcnews.com)
Four out of eight children showing up with the symptoms, which affect the arms, neck and sometimes muscles used in swallowing, tested positive for EV-D68. (nbcnews.com)
Myalgic encephalomyelitis (ME) is a condition which is characterised by the symptoms of extreme fatigue, muscle and joint pain, cognitive impairment and sleep disturbance. (axappphealthcare.co.uk)
Muscular weakness is often accompanied by other symptoms, such as tingling , numbness or pain. (cure-back-pain.org)
If you are aware of a muscular strain or sprain in your back and are experiencing weakness and related symptoms, do not fear. (cure-back-pain.org)
In addition to common symptoms such as vomiting, nausea, constipations, hypotension and a list of at least 22 different symptoms, muscle weakness is the most predominant. (fitday.com)
Quantification of antibodies to 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR) was not available at the time the patient presented but was performed later (with approval of the local ethics committee) by use of ELISA (Quanta Lite HMGCR, Inova Diagnostics) on 3 banked serum samples obtained (a) before onset of symptoms, (b) when the patient presented with muscle weakness, and (c) after treatment. (aacc.org)
In order to determine the depth and severity of your muscle weakness, the first step your doctor will take is to ask you about other symptoms and carry out an examination. (34-menopause-symptoms.com)
It was only in late March of 2019 that I was put on nortriptyline, which seems to have stopped the sensory symptoms and vision symptoms, but motor symptoms (muscle weakness and fatigue) are now the problem. (alsforums.com)
By gaining a better understanding of the muscle symptoms of thyroid disease, you can hopefully get to the bottom of your discomfort and/or weakness. (verywellhealth.com)
In addition to muscle symptoms, you may have an elevated creatinine kinase (CK) level, as determined by a blood test. (verywellhealth.com)
Rarely, hypothyroidism can cause more severe muscle symptoms. (verywellhealth.com)
Your doctor may recommend other tests, such as an electromyography (a test that uses electrodes to detect, translate, and record the electrical signals in your muscles and nerve cells while they're active and at rest) or a muscle biopsy, to rule out other conditions, especially if your symptoms are severe. (verywellhealth.com)
Treatment with the thyroid hormone replacement medication Synthroid (levothyroxine) can usually improve muscle symptoms like cramps and stiffness, although this improvement may take weeks. (verywellhealth.com)
Like in hypothyroidism-induced myopathy, the number does not correlate with the severity of a person's muscle symptoms. (verywellhealth.com)
As with myopathy in hypothyroidism, your doctor will perform a physical examination and ask you questions related to your muscle symptoms. (verywellhealth.com)
It's not dangerous, but it can cause your muscles to feel weak, tingly, or light, along with many other symptoms. (calmclinic.com)
The fourth was undergoing cancer treatment when the muscle symptoms developed, and he died due to cancer shortly afterwards. (neurosciencenews.com)
Listed below are some combinations of symptoms associated with Constant distal muscle weakness, as listed in our database. (rightdiagnosis.com)
Muscle weakness and fatigue are debilitating symptoms of multiple sclerosis (MS). Approximately 50% of muscle weakness and fatigue have been attributed to deficits within the peripheral nervous system, specifically mechanisms residing in the muscle. (oregonstate.edu)
Patients with these symptoms may have increases in their blood of a muscle protein, creatine kinase (CK), that may be released from muscle into the bloodstream with muscle injury or muscle disease. (mhaus.org)
Further, while muscle pain and weakness brought the patients into the clinic, all four were also anemic and had other shared symptoms, so accurately diagnosing people with the syndrome would help doctors manage and treat their other symptoms as well, Pestronk said. (wustl.edu)
We now know that PAH is associated with weakness in the muscles in the legs, which contributes to the symptoms patients' experience. (clinicaltrials.gov)
In fact, regular muscle spasms and cramps are noticeable symptoms of a magnesium deficiency. (top10homeremedies.com)
PDN usually exhibits an acute or subacute course of painful symptoms and muscle weakness with atrophy, often unilateral, in the proximal muscles of the lower extremities. (pubmedcentralcanada.ca)
The symptoms of muscular weakness associated with lipid accumulation in the skeletal muscle in the absence of complaint of muscle cramps or myglobinuria are thought to be diagnostic of carnitine deficiency. (bmj.com)

Similarly, skeletal muscle weakness, increased Nox4 binding to RyR1 and oxidation of RyR1 were present in a mouse model of Camurati-Engelmann disease, a nonmalignant metabolic bone disorder associated with increased TGF-β activity. (nih.gov)
Skeletal muscle weakness is due to breast cancer bone metastases. (nih.gov)
INDIANAPOLIS - Cancer researchers at Indiana University and their colleagues have discovered how cancer-induced bone destruction causes skeletal muscle weakness. (iu.edu)
Here, we show that a syngeneic mouse model of OCIB (4T1 mammary tumor cells) leads to cachexia and skeletal muscle weakness associated with oxidation of the ryanodine receptor and calcium (Ca 2+ ) release channel (RyR1). (frontiersin.org)
This is the first time that skeletal muscle weakness has been described in a syngeneic model of OCIB and represents a unique model system in which to study cachexia and changes in skeletal muscle. (frontiersin.org)
Skeletal muscle weakness is a debilitating consequence of many advanced malignancies. (frontiersin.org)
In this review, we discuss the mechanisms that lead to osteolytic breast cancer bone metastases and the potential for cancer-induced bone-muscle cross-talk leading to skeletal muscle weakness. (iupui.edu)

It can cause nerve damage that may result in muscle weakness. (medicalnewstoday.com)
The Epstein-Barr virus can result in muscle weakness as well as unexplained fatigue, a skin rash, headaches, and appetite loss. (medicalnewstoday.com)
The AZT in the Combivir can cause a myopathy (muscle condition) that can result in muscle weakness /pain. (thebody.com)
Prolonged use of certain drugs may also result in muscle weakness. (healthline.com)

Research in animals has shown that diaphragmatic inactivity produces severe injury and atrophy of muscle fibers. (annals.org)
Muscle atrophy follows known pathways via both myostatin signaling and expression of muscle-specific ubiquitin ligases, atrogin-1 and MuRF1. (frontiersin.org)
Could shoulder atrophy cause neck muscle weakness? (healthtap.com)
What different between muscle weakness and muscle atrophy? (healthtap.com)
The most unavoidable cause of pelvic floor muscle weakness is natural atrophy (muscle deterioration) which occurs as a result of ageing. (club-cleo.com)
disuse muscle atrophy/metabolic disturbance and so on, that compounds morbidity (i.e. causing metabolic syndrome, fatness, hypertension, muscle cachexia) and that eventually leads to premature death. (frontiersin.org)
The study reports novel findings on the associations of muscle weakness and atrophy with a differential expression profile of epigenetic events in the quadriceps of patients with advanced COPD, which was not seen in patients without muscle weakness. (portlandpress.com)
A 57‐year‐old man with type 2 diabetes mellitus for 10 years showed progressive loss of muscle strength in both legs, pain and muscle atrophy in the femoral region and significant weight loss. (pubmedcentralcanada.ca)
At that time, muscle atrophy in the left femoral area was apparent. (pubmedcentralcanada.ca)
In November 2005, pain, muscle atrophy and weakness spread to the opposite side so that he could not stand and began to use a wheelchair. (pubmedcentralcanada.ca)
Asymmetric muscle atrophy was observed in the left femoral to gluteus muscles (fig 1A 1A). ). (pubmedcentralcanada.ca)
Neither loss of muscle strength nor muscle atrophy was observed in the upper extremities. (pubmedcentralcanada.ca)
B) Muscle atrophy of the thigh (left panel) was confirmed by computed tomography (arrowheads). (pubmedcentralcanada.ca)

Retrieved on August 20, 2019 from https://www.news-medical.net/health/Guillain-Barre-Syndrome-Development-of-Muscle-Weakness.aspx. (news-medical.net)
The muscle weakness is about equal in all four limbs as of March, 2019. (alsforums.com)

Earlier studies by the research team led by Andrew Marks of Columbia University showed the same leaks underlie the weakness and fatigue that come with heart failure and Duchenne muscular dystrophy. (redorbit.com)
They also showed that 6-month-old mice carrying a mutation that made their RyR1 channels leaky showed the same muscular defects and weakness characteristic of older mice. (redorbit.com)
Nerves are responsible for controlling the contraction of muscles, determining the number, sequence and force of muscular contraction. (bionity.com)
He says that "muscular inflammation processes, when combined with weight training, are beneficial to the long-term development of new muscle mass, at least in the young. (rd.com)
It is important to understand the reasons for muscular weakness if you are to have any real hope of curing the condition and avoiding the common occurrence of unsuccessful treatment which plagues so many fellow patients. (cure-back-pain.org)
Acute muscular weakness is most commonly the result of a muscular injury. (cure-back-pain.org)
Chronic muscular weakness can be caused by ongoing ischemic processes, which can be a real problem for any patient. (cure-back-pain.org)
It is possible for muscular weakness to be the direct result of a pinched nerve condition in the spine. (cure-back-pain.org)
True muscle weakness is a primary symptom of a variety of skeletal muscle diseases, including muscular dystrophy and inflammatory myopathy. (wikipedia.org)
Complaints of muscle weakness will often present some difficulty to a doctor, because this can refer to several different types of muscular problems. (34-menopause-symptoms.com)
To properly determine which type of muscular weakness you have, and to then look into the possible reasons behind it, it might be necessary to undergo specific tests. (34-menopause-symptoms.com)
Rhabdomyolysis (when muscle breaks down rapidly) is another rare muscular manifestation of hypothyroidism. (verywellhealth.com)
In this article, we explore the link between anxiety and feelings of muscular weakness, suggesting several coping techniques that you can use. (calmclinic.com)
A patient with muscular weakness demonstrating pathological lipid accumulation and abnormal mitochondria in skeletal muscle has been studied. (bmj.com)
Penn Researchers Develop Gene Therapy Technique That Reverses Muscle Membrane Weakness In Muscular Dystrop. (bio-medicine.org)
Philadelphia, PA) - Previous gene therapy approaches to treat muscular dystrophy have been hampered by an inability to successfully place the therapeutic genetic material into deficient muscle cells. (bio-medicine.org)
Now, for the first time, using a naturally-occurring hamster model of limb girdle muscular dystrophy (LGMD), researchers at the University of Pennsylvania Health System have developed a technique that successfully produces widespread transfer of corrective genetic material into muscle cells throughout an entire limb. (bio-medicine.org)
In so doing, the research team also found evidence for a cascade of events that eventually results in cellular destabilization - a process which manifests as muscle weakness in patients with this and other forms of muscular dystrophy. (bio-medicine.org)
We've demonstrated proof of concept that the methodology can work for both skeletal and cardiac muscle," says principal author Hansell Stedman, MD, assistant professor of surgery at Penn's Institute for Human Gene Therapy, "so the next step will be to establish its safety and effectiveness in patients with this form of muscular dystrophy. (bio-medicine.org)
In limb girdle muscular dystrophy, the instability of muscle tissue is linked directly to the level of genetic disruption that occurs within the sarcoglycan complex - a critical muscle structure composed of four membrane-spanning proteins. (bio-medicine.org)

how to perform and teach safe exercises on the joints and back, but also be aware of issues surrounding neuropathy , myopathy ( muscle weakness ), lipoatrophy, wasting, lipohypertrophy, metabolic disorders, lipids, and bone issues. (thebody.com)
One of the most common signs of MT is muscle weakness (myopathy). (thebody.com)
Muscle disease, or myopathy, may occur as a result of having an underactive thyroid (hypothyroidism) or an overactive thyroid (hyperthyroidism). (verywellhealth.com)
While the precise cause of hypothyroidism-induced myopathy is still unclear, some experts speculate that the thyroxine (T4) deficiency seen in hypothyroidism leads to abnormal oxidative metabolism, which ultimately causes muscle injury and impaired muscle function. (verywellhealth.com)
While muscle cramps and aches may occur, they are not as common as they are in myopathy related to hypothyroidism. (verywellhealth.com)
Rarely, in myopathy from hyperthyroidism , the muscles affected can include those that help you swallow and breathe. (verywellhealth.com)
Like muscle disease in hypothyroidism, the 'why' behind myopathy in hyperthyroidism is also unclear. (verywellhealth.com)
Nebulin is a sarcomeric protein that when absent (NEB KO mouse) or present at low levels (nemaline myopathy (NM) patients with NEB mutations) causes muscle weakness. (nih.gov)
Severe statin myopathy is defined as having incapacitating muscle pain, cramps or weakness that were not present before beginning statin therapy. (mhaus.org)
Most individuals with statin myopathy who have mutation-proven underlying muscle disease have CK levels at least 4 times the upper limit of normal, however, not all patients with severe statin myopathy have CK elevations. (mhaus.org)
Patients with mild statin myopathy usually experience pain or weakness attributed to statin therapy but are not incapacitated by it and usually recover quickly with the cessation of therapy. (mhaus.org)
They therefore began a search to determine if patients with statin related myopathy have evidence of DNA changes found in several muscle disorders. (mhaus.org)
Muscle morphology and computer tomography imaging findings were compatible with a metabolic myopathy. (eur.nl)

Muscle weakness happens when your full effort doesn't produce a normal muscle contraction or movement. (healthline.com)
Muscle weakness can be a result of vigorous exercise but abnormal fatigue may be caused by barriers to or interference with the different stages of muscle contraction . (bionity.com)
The two outcome measures for this study were maximal voluntary contraction (MVC) during knee extension and electromyography (EMG) signals from the muscles, which were recorded during the MVC measurements. (massagemag.com)
This stimulates muscle contraction and relaxation. (fibromyalgia-symptoms.org)
The oxidized RyR1 channels leaked Ca(2+), resulting in lower intracellular signaling, which is required for proper muscle contraction. (nih.gov)
During motor activity, serotonin released in synapses that contact motoneurons promotes muscle contraction. (wikipedia.org)
Serotonin binds to extrasynaptic receptors located on the axon initial segment of motoneurons with the result that nerve impulse initiation and thereby muscle contraction are inhibited. (wikipedia.org)
The fundamental difference between the peripheral and central theories of muscle fatigue is that the peripheral model of muscle fatigue assumes failure at one or more sites in the chain that initiates muscle contraction. (wikipedia.org)
NMES uses a lightweight stimulator unit and skin electrodes to produce a controlled and comfortable muscle contraction. (cochrane.org)
Using previously reported lower limits of normal, patients with quadriceps maximum voluntary contraction (QMVC) weakness and/or reduced six-minute walking test (SMWT) performance, were retrospectively identified in this cohort. (bmj.com)
The frequency of quadriceps maximum voluntary contraction (QMVC) weakness and reduced six minute walking test (SMWT) distance according to combined GOLD assessment category (A to D). (bmj.com)
In normal muscle contraction, the ryanodine receptor calcium (Ca 2+ ) release channel (RyR1) is activated, leading to the release of Ca 2+ from the sarcoplasmic reticulum (SR) and causing muscle contraction. (frontiersin.org)
The goals of this study were to identify the cellular mechanisms of contraction within the muscle cell, which could contribute to the muscle weakness and fatigue in MS. Whole muscle assessment of knee extensor strength revealed that subjects with MS (N=6) were 48% weaker than subjects without MS (N=6). (oregonstate.edu)
Using an in vitro single fiber preparation obtained from the vastus lateralis, cross-bridge mechanisms of contraction were tested to understand their role in muscle weakness and fatigue. (oregonstate.edu)
Thus, whole body mobility and energy balance are dictated by muscle contraction. (frontiersin.org)
The advent of new methodologies and technological advancements have allowed researchers to advance our knowledge on the "how's" and "why's" of muscle contraction - however there are still many unanswered questions especially when disease states are implicated. (frontiersin.org)
SICF revealed no differences between muscles, contraction type, or groups. (ahajournals.org)
You'll know that you are suffering from muscle weakness or reduced muscle strength when despite your full effort, your body is not able to produce a normal muscle contraction or movement. (top10homeremedies.com)
In addition to activity in bone, some of the factors released during bone resorption are also known to be involved in skeletal muscle regeneration and contraction. (iupui.edu)

I have neuromuscular disorder which causes muscle weakness. (medhelp.org)
Respiratory muscle weakness is common among patients who have neuromuscular disease ( table 1 ) [ 1,2 ]. (uptodate.com)
Regardless of its clinical course, respiratory muscle weakness is a serious problem among patients with neuromuscular disease. (uptodate.com)
See 'Respiratory muscle weakness due to neuromuscular disease: Management' . (uptodate.com)
Respiratory muscle (inspiratory, expiratory, upper airway) weakness due to neuromuscular disease can cause insufficient ventilation, nocturnal hypoventilation, or ineffective cough [ 6 ]. (uptodate.com)
Most movements require a force far below what a muscle could potentially generate, and barring pathology, neuromuscular fatigue is seldom an issue. (wikipedia.org)
Individual studies suggest that neuromuscular electrical stimulation, or NMES, may help improve the muscle weakness that people often experience as a consequence of a progressive disease. (cochrane.org)
This review is an update of a previously published review in the Cochrane Database of Systematic Reviews Issue 1, 2013 on Neuromuscular electrical stimulation for muscle weakness in adults with advanced disease. (cochrane.org)
In those patients who are unable or unwilling to undertake whole-body exercise, neuromuscular electrical stimulation (NMES) may be an alternative treatment to enhance lower limb muscle strength. (cochrane.org)
In 1996, Pestronk, who leads the university's Neuromuscular Disease Clinic, was reviewing microscope slides of muscle from a patient with muscle pain and weakness when he saw something odd: Scavenger cells that normally feed on dead material were crowded around injured muscle fibers. (neurosciencenews.com)

To investigate the prevalence of joint contracture (limited passive range of joint motion) and muscle weakness in a population with multiple sclerosis (MS). A secondary aim was to establish normative data of functional tests of mobility and balance of people with MS who are still ambulant. (easystand.com)

Many people assume that the reason for an increased level of fatigue and muscle weakness is only a diet low in potassium. (fitday.com)
The purpose of this Research Topic is to discuss evidence coming from macroscopic observations on the whole human/animal to investigations at the molecular level in an effort to identify critical factors in muscle fatigue and muscle weakness, in health and disease. (frontiersin.org)

Diagnosis begins with a patient history distinguishing weakness from fatigue or asthenia, separate conditions with different etiologies that can coexist with, or be confused for, weakness. (aafp.org)
If you have long-term weakness and have a diagnosis, treatment should bring about relief. (cure-back-pain.org)
Diagnosis of MG with generalized muscle weakness meeting the clinical criteria for diagnosis of MG as defined by the Myasthenia Gravis Foundation of America (MGFA) class II, III, IVa and IVb. (clinicaltrials.gov)
If you have muscle weakness for no apparent reason, make an appointment with your doctor for a proper diagnosis. (top10homeremedies.com)

Nerve damage can leave your muscles stiff or weak, reducing your ability to move and perform everyday activities. (healthline.com)
When nerve fibers are damaged, your brain can't effectively send your muscles the signals they need to flex or contract. (healthline.com)
When your weakness is caused by damage to nerve fibers, the treatment strategy is a bit different. (healthline.com)
If i am walking and need to get some where to sit down when this starts happening, i can stay standing and walking by using different muscles(waddling, instead of walking normally and the such) to move, so i don't think it is a nerve issue ( i have also had a nerve conduction test and it was normal). (dailystrength.org)
Fatigue (reduced ability to generate force) may occur due to the nerve, or within the muscle cells themselves. (bionity.com)
The central component to muscle fatigue is generally described in terms of a reduction in the neural drive or nerve-based motor command to working muscles that results in a decline in the force output. (bionity.com)
Typically involuntary, your muscles twitch when a nerve in your body tells them to contract and release rapidly. (fibromyalgia-symptoms.org)
In order for you to move your muscles, a series of electronic impulses are fired along nerve pathways in your body. (fibromyalgia-symptoms.org)
Muscle twitches occur when a particular nerve fires an impulse unexpectedly. (fibromyalgia-symptoms.org)
When a nerve experiences synaptic fatigue it becomes unable to stimulate the muscle that it innervates. (wikipedia.org)
It is this "neural training" that causes several weeks worth of rapid gains in strength, which level off once the nerve is generating maximum contractions and the muscle reaches its physiological limit. (wikipedia.org)
A) Responses elicited from hand muscle by stimulation of nerve at 3 Hz. (medscape.com)
C) Responses in hand muscle elicited by 20-Hz stimulation of nerve for 10 seconds. (medscape.com)
I'm talking about specific muscle weaknesses where the body feels fixated or inhibited somewhere in the complex of muscle, fascia, nerve or joint. (massagemag.com)
Stretching joints and muscles certainly feels like making space, but making space might also mean decompressing a fascial restriction, encouraging fluid back into an area, taking pressure off a nerve, or perhaps changing the responses of mechanoreceptors, proprioreceptors and Golgi tendon organs to reactivate a more positive link between brain and body. (massagemag.com)
Once cancer spreads to bone, patients often experience bone pain, fractures, nerve compression and muscle weakness. (iu.edu)
Can nerve entrapment cause weight loss, muscle wasting and muscle weakness. (healthtap.com)
Motor nerve entrapment can definitely cause muscle wasting & weakness - but only of a particular muscle or muscle group innervated by that nerve. (healthtap.com)
What nerve causes facial muscle weakness? (healthtap.com)
Ptosis/dropping eyelid occurs due to the weakness of muscles, or lack of nerve supply to the muscle that is responsible for raising the upper eye lid. (medindia.net)
Bell's palsy which is the injury of facial nerve that innervates the facial muscles can cause facial assymetry. (healthtap.com)
Malfunction of this nerve can result in paralysis or weakness of the muscles of the ears, eyelids, lips, and nostrils. (petmd.com)
Your doctor will begin by differentiating between one-sided and symmetrical disease, facial nerve paralysis from pure ear infection, and will also look for other neurological weaknesses. (petmd.com)

These drugs have the potential to prevent muscle weakness in patients with cancer in the bone. (iu.edu)
Meanwhile, Reneo secured exclusive sublicensable global rights to develop and commercialize vTv's program to prevent muscle weakness associated with PMV and critical injury. (spglobal.com)
To maintain strong muscles and prevent muscle weakness, blackstrap molasses is a very effective remedy. (top10homeremedies.com)

I've been reading alot about levoxyl causing severe muscle pain and weakness. (healthboards.com)
The neuropathy in my legs is causing severe muscle weakness, loss of balance and coordination? (drugs.com)
What techniques could be used to determine the cause of severe muscle weakness after only mild exercise? (healthtap.com)
Have severe muscle weakness. (healthtap.com)
A young boy presented with severe muscle weakness of his legs at the age of 2 years. (eur.nl)
Neurological examination on admission revealed severe muscle weakness predominantly in the proximal muscles of the lower extremities, especially on the left side. (pubmedcentralcanada.ca)

When muscle fibers are damaged, the integrity of the muscle is compromised and performance is reduced. (cure-back-pain.org)
c ) Tetanic Ca 2+ peak (Fluo-4) in isolated flexor digitorum brevis (FDB) muscle fibers. (nih.gov)
A biopsy of the right quadriceps muscle was performed and revealed polygonal muscle fibers of varying diameter (and an increase of internal nuclei). (aacc.org)
Individual muscle fibers showed necrosis with myocyte phagocytosis and without HLA-ABC upregulation. (aacc.org)
It had been thought that this type of mitochondrial self-repair was unlikely in the packed fibers of the skeletal muscle cells, as mitochondria have little opportunity to interact in the narrow space between the thread-like structures called myofilaments that make up muscle. (ncadd.org)
The effect of the fast skeletal muscle troponin activator, CK-2066260, on calcium-induced force development was studied in skinned fast skeletal muscle fibers from wildtype (WT) and nebulin deficient (NEB KO) mice. (nih.gov)
A) Skinned skeletal muscle fibers ( TC muscle) were stretched, held for 7 min, and were then released. (nih.gov)
Muscle weakness in patients with Becker disease is caused by unusual electrical activity in muscle fibers termed 'plateau potentials' that make them temporarily inactive, says a study published today in eLife . (infosurhoy.com)
There are hints that weakness is due to hypoexcitability, or reduced sensitivity, of muscle fibers, but this conclusion is at odds with the discovery that muscle in Becker disease is hyperexcitable. (infosurhoy.com)
Plateau potentials leave muscle fibers inexcitable, making them essentially inactive. (infosurhoy.com)
These results suggest that muscle affected by Becker disease rapidly cycles between hyper- and hypoexcitability as individual fibers switch from experiencing myotonia (causing stiffness) to the generation of plateau potentials (causing weakness), respectively. (infosurhoy.com)
The state depends on the strength of the signal experienced by the muscle fibers: mild depolarisation triggers myotonia and more severe depolarisation triggers the generation of a plateau potential. (infosurhoy.com)
Understanding how muscle fibers are damaged by immune cells could lead to ways to prevent damage. (neurosciencenews.com)
Immune scavenger cells (green) crowd around muscle fibers (red), damaging them and causing muscle pain and weakness. (neurosciencenews.com)
Pestronk and colleagues discovered a new muscle disease that involves an autoimmune attack on muscle fibers. (wustl.edu)
The condition also could be mistaken for rhabdomyolysis, a disease in which muscle fibers break down due to injury, overexercise or other reasons. (wustl.edu)

A person who needs to stay in bed due to a medical condition may also experience muscle weakness. (medicalnewstoday.com)
If you experience muscle weakness for which there's no normal explanation, make an appointment with your healthcare provider. (healthline.com)
Patients with advanced progressive disease often experience muscle weakness, which can impact adversely on their ability to be independent and their quality of life. (cochrane.org)

HIV can cause progressive muscle weakness in some individuals, especially in those who do not receive treatment. (medicalnewstoday.com)
On her first visit, she had progressive muscle weakness and peripheral neuropathy of +/- 1 month. (thebody.com)
A 54-year-old man was referred due to a 15-year history of unexplained dyspnea and progressive muscle weakness. (neurology.org)

If your muscles have become weak from lack of use, resistance exercises using weights can strengthen them. (healthline.com)
I haven't been able to walk dor months and my trunk muscles are to weak to hold me in a sitting position for more than a few minutes at a time, but I am severly affected so i guess its 'normal' for me! (dailystrength.org)
Why Do My Muscles Feel Weak? (healthline.com)
For example, a physical therapist might suggest progressive resistive exercise to help someone with MS strengthen muscles that have become weak from lack of use. (healthline.com)
Previously, about a month or so ago, I had my first PT session for MS. During his exam, he found that my upper thigh muscles, particularly my inside groin muslces are really weak. (medhelp.org)
Hodges has repeatedly shown that spinal manipulative therapy increases muscle strength in muscles that are weak, but not in normal muscles, and that this improvement in strength also improves the patient's clinical condition. (dynamicchiropractic.com)
A common postural fault that results from weak gluteus maximus muscles is accentuation of the A-P spinal curves, with an anteriorly rotated pelvis and hyperlordosis in the lumbar spine. (dynamicchiropractic.com)
This is when your muscle still functions but feels weak quickly and takes a long time to recover. (34-menopause-symptoms.com)
However, small fixations and inhibitions in muscles, joints and fascia can keep a muscle, or section of muscle, weak to prevent further injury. (massagemag.com)
Quick Self Fixes evolved from the desire to find self-sustaining ways to strengthen the weak muscle tests found via Targeted Muscle Testing. (massagemag.com)
I used to exercise very much in January with no trouble (I'm a male in my late thirties), but now I have trouble even shoveling snow or walking long distances - my muscles get overly fatigued and then weak without much exercise at all. (alsforums.com)
There are several strategies you can use to decrease the feeling of having weak muscles. (calmclinic.com)
Walking Often your muscles aren't actually weak. (calmclinic.com)
Some women are born with weak pelvic muscles, but pelvic floor muscle weakness is most commonly caused by having children. (club-cleo.com)
I have been off for 5 weeks now and since about 3 weeks ago, my muscles feel very weak. (medications.com)
For instance, after an intense workout, your muscles become weak but soon recover after some rest. (top10homeremedies.com)
This will loosen up the muscles and improve circulation so that more nutrients reach the weak muscles to make them stronger. (top10homeremedies.com)

may include foot drop, facial droop, or paralysis of the diaphragm (the sheet of muscle in the chest used for breathing). (thebody.com)
Other viruses can also cause paralysis or muscle weakness and in the latest cases, none of the children has been actually paralyzed. (nbcnews.com)
This ranges from a very mild weakness in an arm or leg to more severe weakness that means they are not able to move one or more limbs at all (paralysis). (chss.org.uk)
Doing so could lead to the development of novel therapies for weakness in Becker disease as well as similar diseases including periodic paralysis. (infosurhoy.com)
US doctors have reported 12 cases of muscle weakness or paralysis among children in Colorado that may be linked to a nationwide outbreak of an usually rare respiratory virus called EV-D68. (medindia.net)
Some viruses in this group have been found to cause meningitis, encephalitis or paralysis, as well as infection of the heart muscle or the sac surrounding it, in a small number of people. (medindia.net)
These children reportedly had varying degrees of muscle weakness in the arms and legs as well as facial paralysis or problems swallowing, Roughly a week after falling ill with a fever and breathing difficulties. (medindia.net)

Many health conditions can cause muscle weakness. (healthline.com)
In fact, several health conditions can cause muscle weakness. (top10homeremedies.com)

When examining patients with sudden limb, neck, or trunk weakness, for proximal muscle strength remember head, shoulders, knees, and toes pdf icon . (cdc.gov)
Keep in mind that young children may not always verbalize their feeling as weakness and may just stop using or refuse to use an affected limb. (cdc.gov)
Just about 1 week ago i started to have tremors while moving a limb and bending, and my muscles gets tired easily. (healingwell.com)
He utilizes transcranial magnetic stimulation, a non-invasive method of exciting neurons in the brain, to assess the excitability of the part of the brain that controls our limb muscles. (ohio.edu)
Despite having received treatment, all 10 with limb weakness still have problems. (medindia.net)
This all suggests that feelings of limb heaviness are not related to the actual muscle weakness after stroke as is commonly thought, but instead related to other signals in the brain which are involved in people's perception of fatigue after stroke. (stroke.org.uk)

Due to the acknowledgment of diaphragmatic weakness and the persistence of elevated CK, chest specialists referred him to the neurology department. (neurology.org)

I had a lot of muscle cramps at night however, in my lower legs. (healingwell.com)
However, in addition to calcium and phosphorous, the body needs a dose of magnesium in order to avoid cramps, muscle fatigue and other conditions that may affect your muscles. (fitday.com)
You also know that under ordinary circumstances the vast majority of MH susceptible patients display no outward signs of the disorder such as muscle weakness, muscle cramps, or scoliosis. (mhaus.org)

In some conditions, such as myasthenia gravis muscle strength is normal when resting, but true weakness occurs after the muscle has been subjected to exercise. (bionity.com)
Myasthenia gravis is caused by an autoimmune response to the acetylcholine receptor (pictured here), a muscle protein that translates nervous system signals into muscle contractions. (eurekalert.org)
PHILADELPHIA -- Nearly 60,000 Americans suffer from myasthenia gravis (MG), a non-inherited autoimmune form of muscle weakness. (eurekalert.org)
How does muscle weakness in Lambert-Eaton myasthenic syndrome (LEMS) compare to that of myasthenia gravis (MG)? (medscape.com)
Difference in distribution of muscle weakness between myasthenia gravis and the Lambert-Eaton myasthenic syndrome. (medscape.com)

The majority of patients (58%) were in the most severe category (D). There was no statistical difference in the frequency of quadriceps weakness between categories. (bmj.com)
Quadriceps weakness was more common than reduced walking capacity in this category. (bmj.com)
We conclude that patients with polymyositis and an excess of COX-negative muscle fibres, but no inclusion bodies, have common features including selective quadriceps weakness, mitochondrial pathology by histochemical and DNA analysis and a poor response to immunosuppressive therapy. (nih.gov)

The weakness often occurs only on one side of your body or just in your legs or trunk. (healthline.com)
have shown that there is a consistent delayed activation of the muscle that occurs in cases of LBP, such that the order in which the individual muscles are activated changes. (dynamicchiropractic.com)
Peripheral regulation therefore depends on the localized metabolic chemical conditions of the local muscle affected, whereas the central model of muscle fatigue is an integrated mechanism that works to preserve the integrity of the system by initiating muscle fatigue through muscle derecruitment, based on collective feedback from the periphery, before cellular or organ failure occurs. (wikipedia.org)
By tagging mitochondria in the skeletal tissue of rats with different colors, the researchers were able to observe the process in action and confirm that mitochondrial fusion occurs in muscle cells. (ncadd.org)
We have recently shown that a significant reduction in skeletal muscle function occurs in mice with osteolytic bone metastases from breast, prostate, and lung cancer and in multiple myeloma ( 9 ). (frontiersin.org)
In health, muscle fatigue is temporary and recovery occurs rapidly. (frontiersin.org)

I recommended when you go to the doctor, ask about muscle biopsy, an emg test and blood test to check the protein creatine level. (healthboards.com)
They may want to just have a skin or muscle biopsy. (healthboards.com)
It might be necessary to perform a procedure known as a biopsy to test the condition of your muscles. (34-menopause-symptoms.com)
2016). Muscle biopsy. (34-menopause-symptoms.com)

Have numbness, pain or muscle weakness? (medicalxpress.com)

For someone with ALS, a physical therapist might recommend stretching and range of motion exercises to prevent muscle stiffness. (healthline.com)
One example is Hoffman's syndrome, in which a person develops diffuse muscle hypertrophy (enlarged muscles) leading to significant muscle stiffness, weakness, and pain. (verywellhealth.com)

Cancer-associated muscle weakness is a poorly understood phenomenon, and there is no effective treatment. (nih.gov)
Here we find that seven different mouse models of human osteolytic bone metastases-representing breast, lung and prostate cancers, as well as multiple myeloma-exhibited impaired muscle function, implicating a role for the tumor-bone microenvironment in cancer-associated muscle weakness. (nih.gov)
Led by Theresa Guise, M.D., the Jerry and Peggy Throgmartin Professor of Oncology at the IU School of Medicine and a researcher at the Indiana University Melvin and Bren Simon Cancer Center , the investigators have identified the molecular pathways that lead to cancer-associated muscle weakness. (iu.edu)
Currently, there are no effective treatments for cancer-associated muscle weakness. (iu.edu)
These findings should lead to new therapies to treat cancer-associated muscle weakness that could be studied in the clinic over the next few years," Dr. Guise said. (iu.edu)

The researchers didn't know the muscle strength of the women before they gave birth, for instance, so it's possible the women who had regular vaginal deliveries and those who needed forceps had weaker muscles to begin with. (reuters.com)
Researchers found that neck and shoulder muscles were up to 26 percent weaker in people with regular tension headaches, compared to those without. (reuters.com)
The researchers made their discovery by studying the skeletal muscles of young and old mice. (redorbit.com)
The researchers measured the volunteers' muscle mass and strength at the beginning of the study and again at the end. (rd.com)
In order to create a neurophysiologically similar weakness among the study's healthy subjects, the researchers used prolonged vibration stimulation. (massagemag.com)
As such, she leads a team of researchers at IU School of Medicine who are investigating ways to improve treatments for bone metastases and muscle weakness. (iu.edu)
Researchers find mechanism underlying muscle weakness in Becker disease. (infosurhoy.com)
Researchers have identified a new autoimmune disease that causes muscle pain and weakness. (neurosciencenews.com)
A previously unknown autoimmune muscle disease involving the sudden onset of debilitating muscle pain and weakness has been identified by researchers at Washington University School of Medicine in St. Louis. (neurosciencenews.com)
The syndrome easily could be mistaken for other muscle diseases that require different treatment, so the findings are expected to help physicians treat patients appropriately, the researchers said. (neurosciencenews.com)
Researchers at Washington University School of Medicine in St. Louis have identified a previously unknown, rare muscle disease that can be treated with immunosuppressing drugs. (neurosciencenews.com)
In the first case, researchers at the Robert Guthrie Molecular Genetics Research Laboratory in Buffalo NY, under the direction of Dr. Georgirene Vladutiu showed that some patients taking lipid lowering drugs (statins) who experience muscle pain, breakdown and weakness harbor mutations in the RYR-1 gene. (mhaus.org)
Researchers believe that certain proteins found in high levels in the blood of patients with other chronic diseases can affect muscle function and growth. (clinicaltrials.gov)
A team of researchers writing for the Journal of the American Geriatrics Society suggested that it is important to identify people at risk for falls related to obesity and muscle weakness so that healthcare providers can offer appropriate solutions. (healthinaging.org)
The researchers said that, as we age, many older adults will be at high risk for falls as obesity and muscle weakness also increase. (healthinaging.org)
Researchers have found that a particular gene that normally plays an important role in muscle regeneration is "silenced" in people who have type 2 diabetes. (diabetesnews.com)

Your brain controls the action, sending electrical signals to your muscles via a network of nerves. (healthline.com)
Voluntary muscle contractions are usually generated when your brain sends a signal through your spinal cord and nerves to a muscle. (healthline.com)
The brain uses the peripheral nervous system's motor nerves to operate muscles so the syndrome affects how this works. (news-medical.net)
Muscle twitches happen when the nerves inside of your body begin to fire involuntarily. (fibromyalgia-symptoms.org)
Muscle weakness happens when the nerves that stimulate your muscles to move aren't working properly. (fibromyalgia-symptoms.org)
Among a multitude of problems, these can be used to check to see if nerves have been damaged , if muscle cells have been impaired, or if you have an autoimmune disorder that causes the immune system to attack the muscle. (34-menopause-symptoms.com)
The polio virus attacks the nerves in the spinal cord that supply the muscles. (healthtap.com)

Botulism , a rare and serious illness caused by Clostridium botulinum bacteria, can also lead to muscle weakness. (healthline.com)

Guillain-Barré syndrome is an autoimmune disorder which results in the fast development of muscle weakness in a patient. (news-medical.net)
We aim to investigate the role of GDF-15 and related molecules in the development of muscle weakness in patients with PAH. (clinicaltrials.gov)
We hope this work will lead to a greater understanding of the role of GDF-15 in the development of muscle weakness in patients with PAH. (clinicaltrials.gov)

I have muscle weakness in all limbs and sometimes I am shouting in my mind for my limbs to move but they won't react. (axappphealthcare.co.uk)
Over a 6-month period, the muscle weakness progressed to the upper limbs. (aacc.org)
If I had to summarize the muscle weakness, it feels like I am being slowly paralyzed in all limbs. (alsforums.com)
Passive range of motion of large joints of the limbs and muscle strength. (easystand.com)

Patients with weakness on an affected side of the shoulder girdle could have difficulty raising their arm above the head. (cdc.gov)
Patients with weakness in the neck and muscles of the shoulder girdle that control this movement might not be able to shrug their shoulder on the affected side and have difficulty holding up the head. (cdc.gov)
The strength of the trapezius muscle running down the back of the neck into the shoulder was also tested. (reuters.com)
A five-year study of professional pitchers during the pre-season showed that three specific areas of weakness in the rotator cuff were associated with the risk of season-ending shoulder surgery, according to Ian Byram, MD, of Vanderbilt Medical Center in Nashville. (medpagetoday.com)
By demonstrating an association between shoulder weakness and throwing related injuries," Dr. Byram said in a statement, "we hope that future injuries might be prevented by focusing strength training programs on those areas that are weakest. (medpagetoday.com)
That is especially noticeable when starting with massive, quadrant-wide weakness, such as all the hip flexors or all the shoulder muscles. (massagemag.com)
The first I noticed muscle weakness was when I was doing some house work and my neck and shoulder muscles were more fatigued that I would have expected for the amount of work I did. (alsforums.com)
While the weakness can be generalized, people typically experience it in the muscles that are closest to the center of their bodies, such as the thigh or shoulder . (verywellhealth.com)
An excessive number of pitches, disarrayed pitching forms and fatigue of shoulder muscles are known to be risk factors of shoulder disorders after pitching. (nii.ac.jp)
We evaluated the fatigue of shoulder muscles and the change of proprioception quantitatively in pitching. (nii.ac.jp)
A hand-held dynamometer was used to evaluate the peri-shoulder muscle strength bilaterally (dominant side: DS, non-dominant side: NDS) in 7 directions, and the shoulder joint proprioception was evaluated in 6 directions before and after pitching. (nii.ac.jp)

On the other hand, various topic locations for muscle weakness are central, neural and peripheral. (bionity.com)
Central muscle weakness is an overall exhaustion of the whole body, while peripheral weakness is an exhaustion of individual muscles. (bionity.com)
In addition to true/perceived, muscle weakness can also be central, neural and peripheral. (bionity.com)
Central muscle weakness manifests as an overall, bodily or systemic, sense of energy deprivation, and peripheral weakness manifests as a local, muscle-specific incapacity to do work. (bionity.com)
Neural weakness can be both central and peripheral. (bionity.com)
Peripheral muscle fatigue' during physical work is an inability for the body to supply sufficient energy or other metabolites to the contracting muscles to meet the increased energy demand. (wikipedia.org)
Secondary objectives: to examine the safety and acceptability of NMES, and its effect on peripheral muscle function (strength or endurance), muscle mass, exercise capacity, breathlessness, and health-related quality of life. (cochrane.org)
In particular, my vision had what I called 'heat waves' in the peripheral, and in hindsight I think this could have been due to muscles shaking my eyes. (alsforums.com)

See detailed information below for a list of 16 causes of Constant distal muscle weakness , Symptom Checker , including diseases and drug side effect causes. (rightdiagnosis.com)

The CK level, however, does not necessarily link to the severity of a person's muscle pain. (verywellhealth.com)

Such etiology depends on the type of muscle weakness, which can be true or perceived as well as variable topically. (bionity.com)
Because of this growing body of evidence, the lack of muscle strength has frequently been cited as the suspected etiology of LBP. (dynamicchiropractic.com)

For instance, if a patient suffers from amyotrophic lateral sclerosis (ALS), motor neurons are damaged and can no longer stimulate the muscles to exert normal force. (bionity.com)
Perceived weakness (or "subjective weakness") describes a condition where it seems to the patient that more effort than normal is required to exert a given amount of force. (bionity.com)
The easiest method for evaluating the positive support reaction is with the patient prone, making it easy to evaluate extensor muscles such as the hamstrings, gluteus maximus, deep neck extensors and upper trapezius. (dynamicchiropractic.com)
Scientific understanding of ventilator-induced respiratory muscle injury has not reached the stage where meaningful controlled trials can be done, and thus, it is not possible to give concrete recommendations for patient management. (annals.org)
In the meantime, clinicians are advised to select ventilator settings that avoid both excessive patient effort and excessive respiratory muscle rest. (annals.org)
Generally speaking, muscle weakness is something a patient perceives and something that we can test for in physical examination by doing a manual muscle test, etc. (healthtap.com)
The most common reason for such an increase is a structural abnormality of a calcium channel within the muscle cell called the ryanodine receptor when the patient is exposed to certain gas anesthetics and the paralyzing agent succinylcholine (for more information view the slide show on the MHAUS web site). (mhaus.org)
Type C . Normal RYR-1 /DHPR in a patient with certain muscle disorders that experience MH signs following exposure to calcium releasing agents. (mhaus.org)
Eventually, pain assessed by the Visual Analogue Scale was relieved by 80% and muscle strength was also well recovered, thereby enabling the patient to walk with a cane. (pubmedcentralcanada.ca)
4 , 5 , 6 , 7 Here we report a patient with PDN, in whom intravenous immunoglobulin therapy (IVIg) treatment dramatically ameliorated severe neuropathic pain and muscle weakness in the lower extremities. (pubmedcentralcanada.ca)
Weakness associated with the pathological presence of lipid in skeletal muscle: a detailed study of a patient with carnitine deficiencey. (bmj.com)

What causes muscle weakness? (medicalnewstoday.com)

This helps prevent and treat muscle weakness. (top10homeremedies.com)

Hello, i have been having frequent feelings of both calf muscle weakness for about 2 months now, some days with arms and neck muscle weakness. (healingwell.com)

Others may not eat or drink enough as a result of their anxiety, causing actual muscle weakness and fatigue. (calmclinic.com)

Moreover, blocking a subset of sodium channels with the drug ranolazine prevented the development of plateau potentials and eliminated the temporary muscle weakness. (infosurhoy.com)

However, it's a sign of a problem if you suffer from persistent muscle weakness. (top10homeremedies.com)
Do not take the problem of persistent muscle weakness lightly, as it may be a sign of an underlying health issue. (top10homeremedies.com)

Tobin MJ, Laghi F, Jubran A. Narrative Review: Ventilator-Induced Respiratory Muscle Weakness. (annals.org)

Unexplained proximal muscle weakness in patients can occur in some neurologic conditions and can be easily missed during exams that only focus on distal strength. (cdc.gov)
Examine both sides for comparison and document both proximal and distal muscle strength, tone, and reflexes . (cdc.gov)
Muscle weakness is a lack of strength in the muscles. (medicalnewstoday.com)
What we do know from this paper is that there are some differences in pelvic muscle strength five to 10 years after childbirth by delivery group," Handa told Reuters Health. (reuters.com)
But what we don't know is, will those differences in muscle strength translate into a greater chance of problems for women with 'weakened' pelvic muscles? (reuters.com)
To see whether pelvic muscle weakness could explain the relationship between the type of childbirth a woman had and her later risk for pelvic disorders, Handa's group measured the muscle strength of 666 mothers. (reuters.com)
The study, which is published in the journal Obstetrics & Gynecology, could not prove that the type of childbirth the women had is responsible for the differences in their pelvic muscle strength. (reuters.com)
Although there were differences in muscle strength between the three groups of mothers, "what we didn't see in this paper is that the difference in strength explains the (increased risk of) pelvic floor disorders" among women who give birth vaginally, Handa added. (reuters.com)
The average muscle strength of women in the cesarean group with any type of pelvic disorder was 39 cm, compared to 36 cm among the women without a disorder - such a small difference it could have been due to chance. (reuters.com)
In addition, women in the cesarean group who suffered from uterine prolapse actually had greater pelvic muscle strength than the women with good organ support. (reuters.com)
Handa acknowledged that she would have expected to see a more clear relationship between muscle weakness and pelvic problems if muscle strength were important in staving off the disorders. (reuters.com)
If we think the pelvic muscles are important, why aren't we seeing more differences between strength and disorders? (reuters.com)
A combination of cardio and strength-training exercises can combat muscle weakness and give you more energy. (healthline.com)
They also saw strength imbalances between sets of muscles that hold the head straight. (reuters.com)
Previous studies have found that muscle strength and weakness were associated with tension-type headaches, Madsen and his colleagues note in the journal Cephalalgia. (reuters.com)
My doc insists I need the testosterone for my muscle strength. (medhelp.org)
Muscle weakness (or "lack of strength") is a direct term for the inability to exert force with ones muscles to the degree that would be expected given the individual's general physical fitness. (bionity.com)
Remarkably, people taking the low-dose aspirin had twice the muscle development and a much bigger increase in strength than those taking high doses of ibuprofen-also known as a non-steroidal anti-inflammatory drug, or NSAID. (rd.com)
The results indicate that people trying to maximize muscle growth and strength should avoid excessive intake of NSAIDs, Tommy Lundberg, PhD told Science Daily . (rd.com)
If you're young and hoping to build muscle mass and strength, you may want to try 75 mg of aspirin or take acetaminophen-Tylenol-which works differently than NSAIDs. (rd.com)
Clark s research revolves around the question: What causes the loss of muscle strength and coordination, and can these losses be prevented? (ohio.edu)
We hope to better understand the physiology behind loss of muscle strength, in order to contribute to the development of better treatments and rehabilitation methods that promote healthy muscle function. (ohio.edu)
Also associated with risk of surgery was weakness of the seated external rotation strength, at P =0.044. (medpagetoday.com)
Strength of the supraspinatus muscle was associated with surgery at P =0.005. (medpagetoday.com)
In the physical examination, the physician should objectively document the patient's loss of strength, conduct a neurologic survey, and search for patterns of weakness and extramuscular involvement. (nih.gov)
Muscle weakness happens when your muscles simply do not have enough strength to perform a certain task or motion. (fibromyalgia-symptoms.org)
a ) In vivo forelimb grip strength ( n = 10) and ( b ) ex vivo specific force of the extensor digitorum longus (EDL) muscle in mice with MDA-MB-231 breast cancer bone metastases ( n = 10). (nih.gov)
Part of the process of strength training is increasing the nerve's ability to generate sustained, high frequency signals which allow a muscle to contract with their greatest force. (wikipedia.org)
Overall, the quality of the evidence was low for the effect on thigh muscle strength and very low to moderate for the effects on other outcomes. (cochrane.org)
to evaluate the effectiveness of NMES on quadriceps muscle strength in adults with advanced disease. (cochrane.org)
He tested my muscle strength (pushed against my arms and legs, had me sit in a chair with my hands on my legs to see how well I could get up, watched me walk normally, on my tip toes and heels). (sclero.org)
The finding gives insight into why chronic heavy drinking often saps muscle strength and it could also lead to new targets for medication development," said Dr. George Koob, director of the National Institute on Alcohol Abuse and Alcoholism, the NIH institute that funded the study. (ncadd.org)
When the body signals it needs to protect itself from injury or pain, the muscle action will reflexively collapse even under the light pressure of a muscle test, keeping it from full activation and full strength. (massagemag.com)
A prospective investigation of LABA use on exercise capacity and muscle strength in COPD may be indicated. (bmj.com)
This can tire your muscles to such a degree that it feels as though they have less strength than they did previously. (calmclinic.com)
We studied the effect of fast skeletal troponin activation on WT muscle and tested whether it might be a therapeutic mechanism to increase muscle strength in nebulin deficient muscle. (nih.gov)
We conclude that fast skeletal muscle troponin activation increases force at submaximal activation in both wildtype and NEB KO fiber bundles and, importantly, that this troponin activation is a potential therapeutic mechanism for increasing force in NM and other skeletal muscle diseases with loss of muscle strength. (nih.gov)
The basic muscle strength before pitching was higher at DS except in the empty can test. (nii.ac.jp)
Evaluation of the COX activity in muscle fibres of patients with inflammatory myopathies provides useful prognostic information regarding the likelihood of improved strength after immunosuppressive treatment. (nih.gov)
Objective To evaluate whether deficits of elbow flexor and extensor muscle strength exist in lateral epicondylalgia (LE) in comparison with a healthy control population. (bmj.com)
Results The authors found significant side differences in elbow extensor (−6.54 N, 95% CI −11.43 to −1.65, p=0.008, standardised mean difference (SMD) −0.45) and flexor muscle strength (−11.26 N, 95% CI −19.59 to −2.94, p=0.009, SMD −0.46) between LE and control groups. (bmj.com)
Within the LE group, only elbow extensor muscle strength deficits between sides was significant (affected-unaffected: −2.94 N, 95% CI −5.44 to −0.44). (bmj.com)
Conclusion Small significant deficits of elbow extensor and flexor muscle strength exist in the affected arm of unilateral LE in comparison with healthy controls. (bmj.com)
Constant distal muscle weakness is a loss of strength in distal muscles that is steady and continual. (rightdiagnosis.com)
Asthenia refers to lack of muscle strength and extreme debility. (medindia.net)
Falls can be especially challenging for older people who are obese and who also have sarcopenia (the medical term for a loss of muscle strength as we age). (healthinaging.org)
Gentle exercises are a must to help build muscle strength and improve circulation. (top10homeremedies.com)
However, no previous study has evaluated both EI and the ECW/ICW ratio simultaneously to investigate their relationship to muscle strength. (springer.com)
The purpose of the present study was to investigate whether both EI and the ECW/ICW ratio are independently associated with muscle strength in elderly women. (springer.com)
This study suggests that the simultaneous application of EI and the ECW/ICW ratio is useful in assessing muscle strength, and accurately estimates the changes in muscle quality related to muscle weakness. (springer.com)
Fukumoto Y, Ikezoe T, Yamada Y, Tsukagoshi R, Nakamura M, Mori N, Kimura M, Ichihashi N (2012b) Skeletal muscle quality assessed from echo intensity is associated with muscle strength of middle-aged and elderly persons. (springer.com)
Goodpaster BH, Carlson CL, Visser M, Kelley DE, Scherzinger A, Harris TB, Stamm E, Newman AB (2001) Attenuation of skeletal muscle and strength in the elderly: the Health ABC Study. (springer.com)
You can preserve both muscle size and strength by continuing to exercise as long as you live. (drmirkin.com)
Forty competitive athletes, aged 40-81, who trained four to five times a week, had the same size muscles, the same absence of fat around their muscles, and close to the same strength as much younger athletes (The Physician and Sportsmedicine, September 2011). (drmirkin.com)
A cross-sectional study by investigators from Tokyo University has found that exercising in middle age is a protective factor against sarcopenia and effective in maintaining muscle strength and physical performance. (menopause.org.au)
Sarcopenia is a disease associated with the ageing process, resulting in loss of skeletal muscle mass and muscle strength and/or function in the elderly. (menopause.org.au)
Handgrip strength, gait speed, and skeletal muscle mass were measured and other information collected, including exercise habits in middle age. (menopause.org.au)
People who have type 2 diabetes often have reduced muscle strength, with the ability of the muscles to take up glucose impaired. (diabetesnews.com)

Back muscle weakness is a common symptom associated with a variety of back muscle and spinal pathologies. (cure-back-pain.org)
Later that week, I was seen in the emergency department for what I believed at the time to be spinal pain (in hindsight, I think it was muscles around my spine causing the pain), and during that visit I also had my right arm fall asleep for about 2 hours - the arm was numb to some senses, but not to pressure. (alsforums.com)

Findings of proximal muscle weakness should be used in conjunction with a thorough history, full physical exam, and other neurodiagnostic studies. (cdc.gov)
In addition, the findings were confirmed in human muscle samples from patients with cancer in bone. (iu.edu)
Collectively, these findings suggest diaphragm muscle weakness may be early-onset in heart failure, which is likely mediated in part by post-translational oxidative modifications at the myofibrillar level. (biomedsearch.com)

Honestly I thought I was going nuts with my knee collapsing, thigh muscles weakening dramatically and tendon pains in my skull triggering loud tinnitus plus nasty pain in my middle finger and feet. (kidneypatientguide.org.uk)

Patients with weakness in the hip muscles might not be able to lift the leg on the affected side, possibly not clearing the toe off the ground. (cdc.gov)
Patients with weakness in both hips might also have trunk weakness and difficulty standing unassisted or unable to attempt this movement. (cdc.gov)
Patients with weakness in the trunk might lean on the stronger leg to help themselves to lower down, use their arms for additional support, and widen their stance to assist with balance. (cdc.gov)
Patients may have weakness both in the trunk and hips and might be unable to stand up unassisted or perform this movement. (cdc.gov)
Disclaimer: This webpage is for informational purposes only to demonstrate areas in which proximal muscle weakness in patients may be observed. (cdc.gov)
Diamond said patients with tension headaches are sometimes horseback riders, dental hygienists or physical laborers, whose repetitive motions at work might lead to the muscle problems. (reuters.com)
Muscle weakness is a common complaint among patients presenting to family physicians. (aafp.org)
18 He also found that in patients with a sacroiliac distortion, there was a concomitant and striking inhibition of the gluteus maximus or medius muscles during attempts at hip extension and abduction or during specific MMT. (dynamicchiropractic.com)
Being a passive form of exercise, NMES allows patients to exercise their leg muscles at home whilst seated. (cochrane.org)
For example, studies may consider examining NMES as an adjuvant treatment to enhance the strengthening effect of programmes, or support patients with muscle weakness who have difficulty engaging with existing services. (cochrane.org)
Programmes of NMES appear to be acceptable to patients and have led to improvements in muscle function, exercise capacity, and quality of life. (cochrane.org)
In contrast, a significant portion of patients with MG never progress past weakness in the extraocular muscles. (medscape.com)
At the point of maximum weakness, 25% of patients with MG had purely ocular involvement, and there were no patients with LEMS who had only ocular involvement. (medscape.com)
When respiratory muscle function often is involved, the involvement is usually not as severe as with MG. However, rare cases of severe respiratory compromise or respiratory failure have been reported in patients with LEMS. (medscape.com)
Advanced cancer often spreads to the bone and patients can have muscle weakness because of that. (iu.edu)
This weakness can severely reduce the quality of life in patients and increase the risk to fracture bone. (iu.edu)
We evaluated 10 patients with histologically typical polymyositis except for an excess of muscle fibres with absent cytochrome oxidase (COX) staining. (nih.gov)
All patients presented with a history of slowly progressive weakness. (nih.gov)
The average age of onset was 9 years older than a group of polymyositis patients with normal COX staining of muscle fibres. (nih.gov)
Selective weakness of knee extension was a prominent and disabling feature in most patients. (nih.gov)
Mitochondrial DNA analysis showed multiple deletions in 90% of muscles from patients with excessive numbers of COX-negative muscle fibres, a prevalence significantly greater than the 22% figure for controls (P = 0.005). (nih.gov)
Some of these features are shared with inclusion body myositis (IBM) and this entity cannot be entirely excluded as vacuoles may not be present in all muscle tissue in IBM patients. (nih.gov)
After moving, patients can also suffer debilitating bouts of weakness that can last from seconds to minutes. (infosurhoy.com)
Myers and colleagues sought to uncover the mechanisms behind muscle weakness in patients by studying models of Becker disease in mice. (infosurhoy.com)
Over the next 22 years, he encountered three more patients hospitalized for muscle pain and weakness whose biopsies showed muscle breakdown coupled with scavenger cells. (neurosciencenews.com)
By carefully analyzing the biopsies, Pestronk and colleagues discovered that the patients' own muscles were under assault by immune scavenger cells known as histiocytes. (neurosciencenews.com)
On the other hand a small number of MH susceptible patients do display muscle breakdown with exercise or exposure to heat. (mhaus.org)
MH type two, are patients with RYR-1 mutations or mutations in the dihidropyridine receptor gene (DHPR) who display either signs of outright MH or just muscle breakdown in association with other drugs, or environmental factors. (mhaus.org)
Her team at the Guthrie Laboratory thought that some of the patients might have genetic changes associated with a variety of muscle disorders. (mhaus.org)
Such questions need addressing if as a scientific community we aspire to secure better designed interventions to improve muscle function, and thus improve quality of life and life prognosis for the ageing population and chronic disease patients. (frontiersin.org)
We will do this by measuring certain markers of muscle weakness and taking blood and muscle samples in patients and controls. (clinicaltrials.gov)
GDF-15 levels may be important in allowing us to define which patients have muscle weakness. (clinicaltrials.gov)
This prospective study included 31 patients who underwent slanted lateral rectus muscle recession for intermittent exotropia with convergence weakness. (clinicaltrials.gov)
All patients who had intermittent exotropia with convergence weakness was enrolled to the slanted lateral rectus muscle recession group. (clinicaltrials.gov)

The animations below illustrate some movements that can be useful in proximal muscle weakness assessment and are accompanied by questions that can be used to further evaluate weakness in one or more body area(s). (cdc.gov)
I started studying this functional and structural approach to muscle testing and assisted yoga with Clay on a weekly basis, learning first the assessment technique now called Targeted Muscle Testing. (massagemag.com)
Table 1 shows frequency of QMVC weakness and reduced SMWT performance in the different combined GOLD assessment categories. (bmj.com)
The changes in muscle composition and its heterogeneity during aging are associated with muscle weakness in elderly persons independent of decreases in muscle mass or muscle thickness (MT). Both the assessment of echo intensity (EI) with ultrasound imaging and the evaluation of the extracellular water/intracellular water (ECW/ICW) ratio with segmental bioelectrical impedance spectroscopy (BIS) are non-invasive and convenient methods and seem valuable for muscle quality determination. (springer.com)

The muscle weakness was progressive and also affected distal hand muscles and bulbar muscles. (aacc.org)
The following medical conditions are some of the possible causes of Constant distal muscle weakness. (rightdiagnosis.com)
Review further information on Constant distal muscle weakness Treatments . (rightdiagnosis.com)
Read more about causes and Constant distal muscle weakness deaths . (rightdiagnosis.com)
How Common are these Causes of Constant distal muscle weakness? (rightdiagnosis.com)
The following list of conditions have ' Constant distal muscle weakness ' or similar listed as a symptom in our database. (rightdiagnosis.com)

This causes contractile dysfunction that manifests in the eventual reduction or lack of ability of a single muscle or local group of muscles to do work. (wikipedia.org)

Its causes are many and can be divided into conditions that have either true or perceived muscle weakness. (wikipedia.org)

Excess TGF-β mediates muscle weakness associated with bone metastases in mice. (nih.gov)
We found that transforming growth factor (TGF)-β, released from the bone surface as a result of metastasis-induced bone destruction, upregulated NADPH oxidase 4 (Nox4), resulting in elevated oxidization of skeletal muscle proteins, including the ryanodine receptor and calcium (Ca(2+)) release channel (RyR1). (nih.gov)
We found that inhibiting RyR1 leakage, TGF-β signaling, TGF-β release from bone or Nox4 activity improved muscle function in mice with MDA-MB-231 bone metastases. (nih.gov)
Humans with breast- or lung cancer-associated bone metastases also had oxidized skeletal muscle RyR1 that is not seen in normal muscle. (nih.gov)
Thus, pathological TGF-β release from bone contributes to muscle weakness by decreasing Ca(2+)-induced muscle force production. (nih.gov)
e-f ) RyR1 oxidation, nitrosylation and RyR1-calstabin1 binding in muscle samples from humans with ( e ) breast cancer bone metastases (BCa bone mets) or control samples (Ctl) and quantitation (right) ( n = 4) and ( f ) lung cancer bone metastases (LCa bone mets) and quantitation (right) ( n = 4). (nih.gov)
They found that inhibiting TGF-β, a growth factor released from bone during cancer-induced bone destruction, improved muscle function in mouse models of human cancers. (iu.edu)
She added: "In mice with cancer in bone, muscle weakness could be prevented by drugs that inhibit bone destruction or block the growth factor activity or stabilize calcium in the muscle. (iu.edu)
In the general population, frailty is associated with low muscle mass, low bone mineral density and higher waist-to-hip ratio. (aidsmap.com)
Muscle is one of the organ systems responsive to bone-derived signals. (frontiersin.org)
Thus, conditions such as osteolytic cancer in bone (OCIB) that disrupt the balance of normal bone resorption ( 7 , 8 ) may also have detrimental effects on skeletal muscle. (frontiersin.org)

Loss of muscle is caused by lack of exercise. (drmirkin.com)

Sleep disorders, such as narcolepsy and insomnia , can result in daytime muscle weakness and fatigue. (medicalnewstoday.com)

Anatomy48

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Analytical, Diagnostic and Therapeutic Techniques and Equipment36

Psychiatry and Psychology1

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Autosomal dominant myopathy with proximal weakness and early respiratory muscle involvement maps to chromosome 2q. (1/934)

Mice with IFN-gamma receptor deficiency are less susceptible to experimental autoimmune myasthenia gravis. (2/934)

Contribution of lung function to exercise capacity in patients with chronic heart failure. (3/934)

Dominant hereditary inclusion-body myopathy gene (IBM3) maps to chromosome region 17p13.1. (4/934)

Myasthenic syndrome of snake envenomation: a clinical and neurophysiological study. (5/934)

MR imaging of Dejerine-Sottas disease. (6/934)

Bethlem myopathy: a slowly progressive congenital muscular dystrophy with contractures. (7/934)

Mechanisms of nasal tolerance induction in experimental autoimmune myasthenia gravis: identification of regulatory cells. (8/934)

No images available that match "muscle weakness"

Muscle Weakness

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