Quadriceps muscle strength muscle strength dynamometer. Medical search. Frequent questions

Muscle strength will be determined with dynamometer measurements of isometric hand grip strength and quadriceps femoris muscle contraction strength. (researchprotocols.org)
The purpose of this study was to analyze the effects of a quadriceps femoris muscle eccentric training program on strength gain in patients with patellar tendinitis. (spinalflowyoga.com)
The effect of an eight-week eccentric exercise program on quadriceps femoris muscle work was evaluated in four groups of subjects-two groups of "normal" (healthy) subjects and two groups of patients with patellar tendinitis. (spinalflowyoga.com)
The eccentric quadriceps femoris muscle work ratio (involved limb/uninvolved limb x 100) was used to quantify strength in the N-A and T-A Groups. (spinalflowyoga.com)
Subjects in the T-A Group, however, showed a trend toward increasing eccentric quadriceps femoris muscle work capacity over the eight-week training period. (spinalflowyoga.com)
1. Rectus femoris - In addition to extending the knee, the rectus femoris muscle has additional actions as it is a biarticular muscle that crosses both the hip and knee joints. (michael-loehr.com)

Muscle strength was measured with digital dynamometer and muscle flexibility was measured with tape measure. (hacettepe.edu.tr)
According to a previous study, pulmonary test function, assessment of severity of functional dyspnea through modified Medical Research Council Dyspnea scale, muscle strength measurements using a digital dynamometer, Beck Depression Inventory for evaluating psychological state, short form-36 for evaluating quality of life and a 2-day supervised exercise program should be used to appraise the preoperative status of end-stage lung disease patients [ 2 ]. (accjournal.org)
Reliability and Validity of the ActivForce Digital Dynamometer in Assessing Shoulder Muscle Force across Different User Experience Levels. (ijspt.org)
The ActivForce (AF) digital dynamometer is a new low-cost HHD with unknown psychometric properties, and its utilization may benefit clinical practice. (ijspt.org)

Before we begin the first null hypothesis exhibits that there is no critical distinction in the peak isometric quadriceps powers utilizing Hand Held Dynamometer for the three hip joint positions. (sampleassignmenthelp.com)
Peripheral muscle strength: handgrip strength, hand-held dynamometer (HHD) [Time Frame: Assessment at baseline, at 12-weeks and at 6 months after PR. (who.int)
Knee extension muscle strength (MS) was determined using a hand-held dynamometer. (biomedcentral.com)

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. (lookformedical.com)
Maximal quadriceps strength was measured as an indicator of leg strength. (publictv.in)
Fifteen sarcoidosis subjects (treatment group) received inspiratory muscle training at 40% of maximal inspiratory pressure (P Imax ), and 15 subjects (control group) received sham therapy (5% of P Imax ) for 6 weeks. (rcjournal.com)
Inspiratory muscle training improves functional and maximal exercise capacity and respiratory muscle strength and decreases severe fatigue and dyspnea perception in subjects with early stages of sarcoidosis. (rcjournal.com)
Maximal isometric quadriceps strength and lower extremity muscle soreness were assessed immediately before and after the downhill treadmill run and on each subsequent recovery visit (one, two and three days post-injury). (andeal.org)
Isometric muscle assessment is classically used, involving a maximal voluntary contraction performed at specified joint position against unyielding resistance. (iospress.com)
We also investigated the interrelationship between output, sex, muscle morphology, and the two variables of the breakpoint during maximal dynamic knee extensions. (iospress.com)
Strength Test as a Predictor for Maximal and Acceptable Lifting. (cdc.gov)

After an anterior cruciate ligament reconstruction surgery, it's common to experience quadriceps weakness, which was thought to be caused primarily by muscle atrophy, or shrinkage. (sciencedaily.com)
Essentially, these fibers rotate less during a contraction, and when they rotate less, they ultimately position themselves in a way that results in less force production -- in other words, this underlying behavior of muscle fibers can lead to muscle weakness. (sciencedaily.com)
The balance of muscle strength between quadriceps and hamstrings (H:Q ratio) was used to assess weakness in the lower extremity musculature. (womenfitness.net)
A vague complaint of debility, fatigue, or exhaustion attributable to weakness of various muscles . (lookformedical.com)
The weakness can be characterized as subacute or chronic, often progressive, and is a manifestation of many muscle and neuromuscular diseases. (lookformedical.com)
BACKGROUND:In the early phase after a total knee arthroplasty (TKA), patients experience multi-level weakness in the operated leg, which is caused primarily by reduced central nervous system (CNS) activation failure of the muscles - especially the knee extensors (quadriceps muscle). (omicsdi.org)
Hip and thigh muscle weakness is widely established in people with hip OA [ 10 ]. (biomedcentral.com)
Respiratory muscle weakness occurs in sarcoidosis and is related to decreased exercise capacity, greater fatigue, dyspnea, and lower quality of life in sarcoidosis patients. (rcjournal.com)
Even when lung function is normal, respiratory muscle strength is reduced in subjects with sarcoidosis, and respiratory muscle weakness increases dyspnea perception and impairs exercise capacity. (rcjournal.com)
2 , 4 , 5 , 6 One study 4 reported inspiratory muscle weakness in 16.7% of subjects with stage I-IV sarcoidosis, and other studies 2 , 5 , 6 have also shown that subjects' inspiratory muscle strength is decreased up to 45% and expiratory muscle strength is decreased up to 40% when compared with healthy controls. (rcjournal.com)
A systematic review revealed that in the early postoperative phase after lung transplantation, there is a considerable reduction in quadriceps muscle weakness due to critical myopathy, impaired skeletal muscle oxidative capacity, and local wound complications due to continuous motion in the thoracic region or old age factors. (accjournal.org)
Background: Osteoarthritis (OA) of the knee is a common cause of chronic disability in patients with quadriceps muscle weakness. (uba.ar)
5 Some commonly cited causes include hamstring muscle weakness, 6 7 poor hamstring flexibility, 2 8 9 shorter optimum angle for peak torque, 10 11 muscle fatigue, 12 13 inadequate warm-up, 14 previous injury 6 15 16 17 and age. (bmj.com)
Three prominent risk factors for the development and worsening of knee OA are limb alignment, muscle weakness, and obesity, all of which alter the mechanical environment of the joint. (biomedcentral.com)
Respiratory complications are most common cause of morbidity/mortality in patients with cervical spinal cord injury (cSCI) due to respiratory muscle weakness and lower diaphragm position resulting in limited availability of inspiration, reduced thorax mobility and limited forced expiration. (nel.edu)
Muscle weakness is associated with osteoarthritis pathology. (biomedcentral.com)

During isokinetic knee strength testing, the knee flexion angles that correspond to the measured torque values are rarely considered. (springeropen.com)
The torque values were greater at the lower velocity and eccentric mode, but the influence of the velocity and contraction mode were lower at shorter and greater muscle lengths, respectively. (springeropen.com)
The functional hamstring to quadriceps ratio (also called H/Q ratio) is a calculation in which the strength (peak torque) of the hamstring muscles in eccentric motion is divided by the strength of the quadriceps in a concentric motion (2). (footballscience.net)
Does the Early and Late Rate of Torque Development, Change in Relation to the Quadriceps Angle? (redfame.com)
The rate of torque development (RTD), which determines the force that can be developed in the early phase of muscle contraction (0-200 ms), is very important in terms of tracking explosive strength improvement and preventing knee injuries. (redfame.com)
The purpose of this study was to investigate the relationship of quadriceps angle which affects the structural alignment of the lower extremity with early (0-100 ms) and late (100-200 ms) rate of torque development of the knee extensor muscles and myoelectrical activity. (redfame.com)
There was a negative correlation between the structural differences of the lower extremity and the early and late rate of torque development of the knee extensor muscles. (redfame.com)
Cox regression analysis revealed that athletes with a decrease in the hamstring : quadriceps peak torque ratio of less than 0.60 at an angular velocity of 180°/s have a 17-fold increased risk of hamstring injury. (bmj.com)
Performing preseason hamstring : quadriceps peak torque ratio assessments may be useful to identify sprinters susceptible to hamstring injury. (bmj.com)
5 It was further suggested that concentric hamstring : quadriceps peak torque ratio (Hcon : Qcon) could be used to discriminate the at-risk group. (bmj.com)
0.05) less depressed joint torque in the SSC at the longest muscle-tendon unit length compared to the corresponding SHO condition, without any differences in knee kinematics and fascicle behavior. (nature.com)
The steady-state force or torque is decreased after shortening-hold (SHO) experiments compared to an isometric hold phase of a fixed-end contraction at the same muscle length and activation level. (nature.com)
No significant bilateral strength differences were observed in knee flexors (KF) and knee extensors (KE) peak torque (PT) scores. (mjssm.me)
Using an isokinetic dynamometer, the peak torque values during knee flexion and extension were measured at angular velocities of 60°/s and 180°/s, and the total work were measured at the angular velocities of 180°/s. (ftrdergisi.com)
The isokinetic peak torque values at the angular velocities of 60°/s and 180°/s for the quadriceps muscle and for the hamstring muscle was statistically significantly different in the overt and subclinical hypothyroidism groups than in the control group. (ftrdergisi.com)

Surface electromyography (sEMG) of the vastus lateralis (VL) and vastus medialis (VM) muscles were recorded during the fatigue task to examine changes in muscle activation. (wku.edu)
Isokinetics and Exercise Science publishes studies associated with the methodology of muscle performance especially with respect to the issues of reproducibility and validity of testing, description of normal and pathological mechanical parameters which are derivable from muscle testing, applications in basic research topics such as motor learning paradigms and electromyography. (iospress.com)
Therefore, this study measured muscle activity with surface electromyography (EMG) during partial and parallel squats in 20 Division I collegiate cross-country runners (10 males and 10 females) in a randomized crossover design. (lww.com)
Squats of different depths have been shown to alter muscle activity when examined with electromyography (EMG) in male weightlifters ( 3 ). (lww.com)
Electromyography (EMG) has demonstrated decreased-to-absent activity in the involved muscle, but nerve conduction studies have been normal. (medscape.com)

Although six muscle strength trials are preformed only the highest peak forced is reported in the data file. (cdc.gov)
Women in the top third of peak knee extensor strength had a lower incidence of symptomatic knee OA, while men with strong thigh muscles had only a slight advantage over men with weaker knee extensor strength. (womenfitness.net)
The hypothesis was that strength training exercises performed in machines would elicit higher levels of voluntary peak quadriceps and hamstring muscle activity than strength training exercises performed in more simple forms, using elastic bands or the patients' own body weight. (omicsdi.org)
METHODS:A cross-sectional electromyographic study investigated voluntary peak muscle activity in the operated leg during 6 different strength training exercises. (omicsdi.org)
Voluntary peak muscle activity (%EMGmax) was calculated for the quadriceps and hamstring muscles for each exercise. (omicsdi.org)
The first null hypothesis demonstrates that there is no significant difference in the peak isometric quadriceps forces using HHD for the three hip joint positions. (sampleassignmenthelp.com)
The second null hypothesis indicates that there is no significant difference between males and females regarding peak quadriceps muscle forces for the three hip joint positions. (sampleassignmenthelp.com)

A handheld dynamometer attached to the ankle recorded the maximum value in kg. (publictv.in)

Resistance exercise is a combination of static and dynamic contractions involving shortening and lengthening of skeletal muscles . (lookformedical.com)
The aim of this study was to determine the effect of a 4-week high-frequency NMES intervention on voluntary muscular fatigue and changes in neuromuscular activation patterns of the quadriceps during voluntary fatiguing muscle contractions in older adults. (wku.edu)
Strength tested with eccentric contractions on KIN/COM dynamometer and VAS scores both resting and during activity. (spinalflowyoga.com)
In two sessions, 25 healthy participants performed isometric reference (ISO), shortening hold (SHO) and SSC contractions on an isokinetic dynamometer. (nature.com)

A device that measures MUSCLE STRENGTH during muscle contraction , such as gripping, pushing, and pulling. (lookformedical.com)
The amount of force generated by MUSCLE CONTRACTION . (lookformedical.com)
Muscle strength can be measured during isometric, isotonic, or isokinetic contraction, either manually or using a device such as a MUSCLE STRENGTH DYNAMOMETER . (lookformedical.com)
Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments. (lookformedical.com)
A state arrived at through prolonged and strong contraction of a muscle. (lookformedical.com)
Limited information concerning the influence of hip angle, muscle contraction mode, and velocity on the isokinetic knee strength over the entire range of motion (ROM) is available. (springeropen.com)
The angle-specific effects provide the importance of the hip flexion angle, velocity, and contraction mode for the individualization of knee strength training and testing within performance, prevention, and rehabilitation programs. (springeropen.com)
Generaly, there are several muscular relationships that can be "created" from the different contraction modes and muscle surrounding the knee joint. (footballscience.net)
Quadriceps force measurements were recorded with a maximum, isometric contraction on a dynamometer. (sportsmedres.org)
It must be understood, however, that while isokinetic devices control the speed of the exertion, this does not assure a constant speed of muscle contraction. (cdc.gov)
Increasing the isokinetic speed of contraction will place increasing demands on Type II muscle fibers (fast twitch and fast oxida- tive glycolytic). (cdc.gov)

However, the ubiquitary nature of vitamin D receptor (VDR) suggests potential for widespread effects, which has led to new research exploring the effects of vitamin D on a variety of tissues, especially in the skeletal muscle. (hindawi.com)
In this review, we will specifically address the effect of vitamin D on skeletal muscles and its clinical implications, especially frailty and the risk of fall. (hindawi.com)
Skeletal muscles are innervated and their movement can be consciously controlled. (lookformedical.com)
A collective name of the four-headed skeletal muscle of the thigh, comprised of the rectus femoris, vastus intermedius, vastus lateralis, and vastus medialis. (lookformedical.com)
Large, multinucleate single cells, either cylindrical or prismatic in shape, that form the basic unit of SKELETAL MUSCLE. (lookformedical.com)
3 Evidence has accumulated to suggest that, as part of this vicious cycle, deconditioning of skeletal muscle occurs which contributes significantly to exercise intolerance in this patient population. (bmj.com)
NMES and Skeletal Muscle Fatigue" by Monica A. Mendoza, Kyndall P. Ramirez et al. (wku.edu)
However, little is known regarding the effects of a high-frequency NMES intervention on voluntary skeletal muscle fatigue. (wku.edu)
It is possible that NMES induced adaptations may be frequency-specific and that high-frequency NMES may not be efficacious when the goal is to improve skeletal muscle endurance. (wku.edu)
Skeletal Muscle Mass and Fat Mass Relationships with Physical Fitness Test Performance in Law Enforcement Recruits before Academy. (nsca.com)
Baicalin supplementation reduces serum biomarkers of skeletal muscle wasting and may protect against lean body mass reduction in cancer patients: Results from a pilot open-label study. (nel.edu)
Baicalin is a natural flavonoid that can reduce skeletal muscle atrophy in animal models of cancer cachexia by inhibiting NF-κB. (nel.edu)
Emanuele E, Bertona M, Pareja-Galeano H, Fiuza-Luces C, Morales J, Sanchis-Gomar F, Lucia A. Baicalin supplementation reduces serum biomarkers of skeletal muscle wasting and may protect against lean body mass reduction in cancer patients: Results from a pilot open-label study. (nel.edu)
Unloading of skeletal muscle, both on Earth via bed-rest experiments and during spaceflight, result in remodeling of muscle (atrophic response). (wikipedia.org)
In addition, there are cardiopulmonary and vascular changes, including a significant decrease in red blood cell mass, that affect skeletal muscle function. (wikipedia.org)
In the US human space program, the only in-flight countermeasure to skeletal muscle functional deficits that has been utilized thus far is physical exercise. (wikipedia.org)
Collective knowledge gained from these mission has aided in the evolution of exercise hardware and protocols designed to minimize muscle atrophy and the concomitant deficits in skeletal muscle function. (wikipedia.org)
Development, evaluation and validation of new countermeasures to the effects of skeletal muscle unloading will likely employ variations of these same basic ground-based models. (wikipedia.org)
Sarcopenic individuals presented lower body mass, body mass index and skeletal muscle index. (biomedcentral.com)
All these have established that decreased skeletal muscle tissue indicators, together with low physical performance (all six guidelines) or muscle strength tests (EWGSOP, AWGS and FNIH), are necessary to establishing a diagnosis. (biomedcentral.com)
The energy is instead converted into a resistive force, which varies in relation to the efficiency of the skeletal muscle. (cdc.gov)

Isokinetic knee strength is influenced by the hip flexion angle. (springeropen.com)
MViC and VA of quadriceps muscle, knee flexion and extension range of motion, pain level, along with a Timed Up-and-Go Test (TUG) and self-reported measure of physical function (assessed using the Oxford Knee Score questionnaire [OKS]) were evaluated before (PRE) and 1 month after surgery (POST). (omicsdi.org)
However, also the antagonist (flexion the knee - the hamstring muscle perform a lot of work during motions in football such as sprinting (24, 33, 39). (footballscience.net)
Overall, age, quadriceps strength, and knee flexion moments during gait on the involved limb were significantly different between those who passed and failed the return to play criteria. (sportsmedres.org)
The results demonstrated older patients, patients with weaker quadriceps, and patients with less knee flexion during walking were less likely to pass return to sport criteria. (sportsmedres.org)
When considering age, quadriceps strength, and knee flexion moments the authors could correctly predict 69% of the patients who passed and 82% of patients who failed to meet the return to sport criteria at 6 months post ACL reconstruction. (sportsmedres.org)
While age is not a modifiable factor and debate exists over how modifiable knee flexion moments during gait are, the major focus of preoperative rehabilitation should focus on increasing quadriceps strength. (sportsmedres.org)

Muscle strength was assessed by measuring the isokinetic strength of the knee extensors (quadriceps). (cdc.gov)
The activity of the hamstring muscles during kicking was also correlated with isokinetic strength measurements (26) showing the importance of the knee flexors as well. (footballscience.net)
The aims of this study are twofold: (1) to examine bilateral asymmetries in isokinetic strength and balance assessments, and (2) to evaluate the relationship between muscle strength and balance measures. (mjssm.me)
Eighty-eight male adolescent football players were assessed for body composition (InBody 770), isokinetic strength (Biodex System 4 Pro Dynamometer), and balance performance (Biodex Balance System). (mjssm.me)
As most industrial work tasks contain a significant dynamic component, analysis of isokinetic strength capabilities appears to offer some advantage to isometric testing in this regard. (cdc.gov)
As detailed below, some investigators have been able to demonstrate that the results of certain isokinetic strength tests (for example, an isokinetic exertion from floor to chest height) appear to be correlated with the amount of weight individuals were willing to lift for infrequently performed tasks. (cdc.gov)

What is and how is the functional hamstring to quadriceps ratio measured? (footballscience.net)
An isokinetic dynamometer is used to assess the H/Q ratio. (footballscience.net)
A new concept for isokinetic hamstring: quadriceps muscle strength ratio. (mjssm.me)
The two main risk factors that were found to be supported with some evidence were the (i) hamstrings to quadriceps ratio (HQR) and (ii) a unique neuromuscular activation pattern during side cutting. (ljmu.ac.uk)

RTD was measured in concentric/concentric mode at 60, 120 and 180°/s angular velocities in an isokinetic dynamometer. (redfame.com)

We hypothesized the parallel squat would increase extensor muscle activitation (i.e. hamstrings and erector spinae). (lww.com)
During preliminary isokinetic testing, both male and female runners demonstrated deficient hamstrings-to-quadriceps ratios, which would not likely improve by performing parallel squats based on our EMG findings. (lww.com)

Normal subjects gained more strength (23%) than tendinitis group also increased strength but it was not statistically significant, noting that while strength did increase, the pain may limit work loads, which thereby hinders strength increases. (spinalflowyoga.com)
According to power analysis conducted with α = 0.05 and power = 0.80 using G*POWER3, 34, and 17 samples were needed to obtain a statistically significant difference in muscle strength (MS) and MV, respectively, between the operated and contralateral sides. (biomedcentral.com)

Six muscle strength measurements are obtained: three warm-up/ learning measurements and three test measurements for the muscle strength component record. (cdc.gov)
The (fast and repeated) knee extensions during kicking (also shown in its correlation with isokinetic measurements (26)), seem to have an effect on the muscles influencing the knee joint. (footballscience.net)

Researchers acknowledged the study was limited by not including assessments of hip abductor strength. (womenfitness.net)
During each of these visits, a blood sample was taken and assessments of isometric quadriceps strength and muscle soreness were performed. (andeal.org)
Motor score of key muscle s assessments for upper (UEMS) and lower (LEMS) limbs were used. (nel.edu)
In practice, clinicians use objective assessments to determine alterations in muscle strength, muscle flexibility, joint range of motion, and alignment during evaluation of runners. (springer.com)

They found that besides muscle loss, the quadricep muscle -- specifically, the fibers within that muscle -- contract differently. (sciencedaily.com)
The surgical leg contracted differently, meaning that bundles of muscle fibers in the quadriceps were slower and lengthened less. (sciencedaily.com)
Smooth muscle fibers are bound together into sheets or bundles by reticular fibers and frequently elastic nets are also abundant. (lookformedical.com)
It's a depressing fact but shortly after age 50, you begin to lose nearly 2 percent of your muscle fibers each year. (humanlocomotion.com)
Figure 1 is a graph of the average number of quadriceps muscle fibers present in adults aged 18 to 82 (1). (humanlocomotion.com)

Generally our group has been saying that an ACL injury prematurely ages the limb -- the joint itself often shows signs of arthritis within 10 years and the muscle also exhibits factors like aged muscle tissue," Lepley said. (sciencedaily.com)
Conclusions: For severely disabled COPD patients with incapacitating dyspnoea, short term electrical stimulation of selected lower limb muscles involved in ambulation can improve muscle strength and endurance, whole body exercise tolerance, and breathlessness during activities of daily living. (bmj.com)
The primary aim of this study is to test the hypothesis that adding aerobic physical activity to a muscle strengthening exercise leads to significantly greater reduction in hip pain and improvements in physical function, compared to a lower-limb muscle strengthening exercise program alone at 3 months. (biomedcentral.com)
Findings will assist to provide an evidence-based recommendation regarding the additional effect of aerobic physical activity to lower-limb muscle strengthening on hip OA pain and physical function. (biomedcentral.com)
Of note, all trials in the systematic review evaluated lower-limb muscle strengthening exercise, while only 3 investigated aerobic physical activity. (biomedcentral.com)
To illustrate this knowledge deficit, we summarize what is known about the influence of limb alignment, muscle function, and obesity on sex differences in knee OA. (biomedcentral.com)
Significant gaps in knowledge remain as to how sex differences in limb alignment, muscle function, and obesity disturb the normal mechanical environment of the knee and cartilage and thereby underlie sex differences in knee OA. (biomedcentral.com)
Obvious differences in parameters of spirometry, respiratory muscle s and limb muscle s strength between motor complete and incomplete group were found. (nel.edu)
Contracture of a muscle may limit limb mobility, leading to a decrease in function and an abnormal appearance, which, in turn, may have social implications. (medscape.com)
Return to sport criteria consisted of 90% quadriceps strength symmetry between injured and noninjured limb and a score of 90% on both the KOS-ADLS and global rating scale. (sportsmedres.org)

We'll build on this by taking what we learned in this more stationary experiment, where we looked at participants on a strength machine, and move it to a more dynamic condition with people walking," she said. (sciencedaily.com)
Participants were evaluated for thigh muscle strength using an isokinetic dynamometer, a device that measures the strength of different muscle groups. (womenfitness.net)
Intervention group participants will receive a 12-week neuromuscular and quadriceps/hip strength training programme. (biomedcentral.com)
During the second visit, participants performed a 30-minute intermittent downhill treadmill run to induce muscle injury. (andeal.org)

They are also called voluntary muscles . (lookformedical.com)
Therefore, this study explored whether the addition of motor imagery to routine physical therapy reduces the deterioration of quadriceps muscle strength and voluntary activation (VA) as well as other variables related to motor performance in patients after total knee arthroplasty (TKA). (omicsdi.org)
In addition, multiple linear regression analysis showed that failure of voluntary activation explained 47% of the quadriceps muscle strength loss, with no significant difference in perceived level of pain. (omicsdi.org)

This study was planned to investigate the effects of inspiratory muscle training on exercise capacity, respiratory and peripheral muscle strength, pulmonary function and diffusing capacity, fatigue, dyspnea, depression, and quality of life in subjects with sarcoidosis. (rcjournal.com)
no significant improvements were observed in pulmonary function and diffusing capacity, peripheral muscle strength, fatigue, depression, and quality of life between groups after inspiratory muscle training. (rcjournal.com)
Peripheral muscle strength: quadriceps strength, one-repetition maximum (1-RM) [Time Frame: Assessment at baseline, at 12-weeks and at 6 months after PR. (who.int)

the secondary objective is to evaluate the association of muscle strength, functional ability, and frailty with work ability. (researchprotocols.org)
This study will evaluate the association of work ability with modifiable parameters such as muscle strength and functional ability. (researchprotocols.org)
MI practice, when added to physical therapy, improves both objective and subjective measures of patients' physical function after TKA, and facilitates transfer of MI strength task on functional mobility. (omicsdi.org)
Kabitz et al 4 demonstrated that inspiratory muscle strength is strongly predictive for dyspnea and functional exercise capacity. (rcjournal.com)
Rosemffet, M.G. Effects of functional electrostimulation on pain, muscular strength, and functional capacity in patients with osteoarthritis of the knee. (uba.ar)
Maldonado Cocco, J.A. 'Effects of functional electrostimulation on pain, muscular strength, and functional capacity in patients with osteoarthritis of the knee' (2004) Journal of Clinical Rheumatology. (uba.ar)
Beneficial effects have been proposed for functional electrostimulation (FES) and exercise at the muscle level. (uba.ar)
Objectives: The objective of the study was to begin to compare the effects of both therapeutic modalities on quadriceps muscle strength, pain, and functional capacity in patients with OA of the knee and to prove whether the combination of these modalities provides greater benefits than the use of each therapeutic modality alone. (uba.ar)
It was concluded that a potential (above) 1:1 strength relationship was observed at knee extension indicating a functional capacity of the hamstring muscles, which provide stability at the knee joint (3). (footballscience.net)

On the contrary, vitamin D supplementation has been shown to improve muscle strength and gait in different settings, especially in elderly patients. (hindawi.com)
More than 3 decades ago, the clinical observation that patients with rickets and osteomalacia displayed proximal myopathy suggested a direct link between hypovitaminosis D and muscle function [ 7 ]. (hindawi.com)
Also, RA patients typically suffer from reduced muscle strength. (researchprotocols.org)
Background: Passive training of specific locomotor muscle groups by means of neuromuscular electrical stimulation (NMES) might be better tolerated than whole body exercise in patients with severe chronic obstructive pulmonary disease (COPD). (bmj.com)
Methods: Fifteen patients with advanced COPD (nine men) were randomly assigned to either a home based 6 week quadriceps femoris NMES training programme (group 1, n=9, FEV 1 =38.0 (9.6)% of predicted) or a 6 week control period before receiving NMES (group 2, n=6, FEV 1 =39.5 (13.3)% of predicted). (bmj.com)
We therefore propose that passive stimulation of locomotor muscle groups by neuromuscular electrical stimulation (NMES) may provide an alternative approach for improving physical capacity in severely compromised patients with COPD who present with incapacitating dyspnoea. (bmj.com)
Patients sat on a chair and contracted the quadriceps muscles as hard as possible for five seconds. (publictv.in)
Patients were classified as 'high' or 'low' strength according to whether their value was above or below the median for their sex. (publictv.in)
A total of 451 patients had low quadriceps strength and 481 had high strength. (publictv.in)
The incidence of heart failure was 10.2 per 1,000 person-years in patients with high quadriceps strength and 22.9 per 1,000 person-years in those with low strength. (publictv.in)
Our study indicates that quadriceps strength could help to identify patients at a higher risk of developing heart failure after myocardial infarction who could then receive more intense surveillance. (publictv.in)
The findings need to be replicated in other studies, but they do suggest that strength training involving the quadriceps muscles should be recommended for patients who have experienced a heart attack to prevent heart failure. (publictv.in)
Isokinetic dynamometers are commonly used to evaluate knee muscle strength in athletes and patients. (springeropen.com)
Thirteen patients performed muscular endurance tests in an isokinetic dynamometer. (hbotclinicidaho.com)
Methods: This pilot study included 37 patients with OA of the knee who were assessed at baseline and at 8 weeks, accounting for the following variables: body mass index, knee pain (measured using a VAS), WOMAC, quadriceps strength (measured using a dynamometer) and 6-minute walk test. (uba.ar)
These pathologies require a specific muscle assessment for the diagnosis and the management of patients. (iospress.com)
Muscle wasting in patients with cancer has been linked to an increased activity of nuclear factor κB (NF-κB) and higher circulating levels of activin-A (ActA), a negative growth factor for muscle mass. (nel.edu)
Our pilot open-label data suggest that baicalin supplementation is potentially useful for contrasting lean body mass reduction in cancer patients with involuntary weight loss, an effect which is likely mediated by the inhibition of negative growth factors for muscle mass. (nel.edu)
The present study aimed to evaluate the performance of knee muscles using an isokinetic dynamometer to determine muscle dysfunction in patients with newly diagnosed hypothyroidism, and to compare the results with that in a healthy control group. (ftrdergisi.com)
The lower muscle strength and endurance determined in overt and subclinical hypothyroid patients as compared to the controls suggest that myopathy occurs in the early stages of hypothyroidism and that it is a condition that should be evaluated at the time of diagnosis. (ftrdergisi.com)
The study also sought to determine if patients who had strength gains preoperatively would have better outcomes postoperatively. (sportsmedres.org)
A recent study demonstrated that measuring muscle volume using computed tomography (CT)-based analysis and comparing bilateral muscles in the same patient allowed for accurate evaluation of muscle volume in unilateral hip osteoarthritis (OA) patients. (biomedcentral.com)
Here, we evaluated muscle volume using CT-based analysis and compared bilateral muscles in knee OA (KOA) patients. (biomedcentral.com)
Therefore, accurate evaluation of the muscles of KOA patients is important to better understand the relationship between the muscle and OA pathology. (biomedcentral.com)
A recent study showed that muscle volume in unilateral hip OA patients could be accurately evaluated by measuring muscle volume using CT-based analysis and comparing bilateral muscles in the same patient [ 17 ]. (biomedcentral.com)
Here, we evaluated muscle volume using CT-based analysis and conducted comparisons between bilateral muscles in KOA patients. (biomedcentral.com)

Earlier cross-sectional studies had indicated that a greater than 10% bilateral deficit in isometric hamstring strength was a predictor of hamstring injury. (bmj.com)

Muscle atrophy can play a role, but it is also possible that other noncontractile elements of muscle are clogging up the system and not allowing it to contract effectively," Lepley said. (sciencedaily.com)
Bilateral CT image analysis may be useful for evaluating the relationship between OA pathology and muscle atrophy. (biomedcentral.com)

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. (lookformedical.com)
For example, it was reported that muscular dysbalances/asymmetries at the knee joint are shown to influence injury occurrence and players with untreated strength imbalances showed 4.66 times greater risk for injuries (8). (footballscience.net)
This device allows the experimenter to assess various muscular strengths (such as those shown) at a constant velocity. (cdc.gov)

Studies in athletes during prolonged submaximal exercise have shown that muscle fatigue increases in almost direct proportion to the rate of muscle glycogen depletion. (lookformedical.com)
The primary outcome measures are cardiorespiratory fitness and muscle strength assessed by means of objective performance indicators, and self-reported fatigue. (biomedcentral.com)

All four groups participated in a home muscle stretching exercise program, but only two groups-one group of normal subjects (N-A) and one group of subjects with tendinitis (T-A)-received additional eccentric training on an eccentric isokinetic dynamometer. (spinalflowyoga.com)
We concluded that eccentric exercise may be an effective treatment for patellar tendinitis, but that knee pain may limit optimal gains in strength. (spinalflowyoga.com)
Subjects were divided into 4 groups, normal and tendinitis groups with home stretches only and normal and tendinitis groups with the addition of isokinetic eccentric exercises done 3 times per week on KIN/COM dynamometer for 8 weeks progressing from 30 degrees per second to 70 degrees per second. (spinalflowyoga.com)
To investigate whether consuming a recovery beverage containing carbohydrate and protein or carbohydrate only immediately after novel eccentric exercise differentially affects the rate of recovery from exercise-induced muscle injury. (andeal.org)
The relationships of eccentric strength and power with dynamic balance in male footballers. (mjssm.me)

ABSTRACT NİZİPLİOĞLU A. Investigation of the effect of extracorporeal shock wave therapy muscle strength, flexibility and architectural features in lower extremity tendinopathies. (hacettepe.edu.tr)

Muscle mass was significantly related to all fitness tests except the medicine ball toss. (nsca.com)
the FES + exercise combination improved strength significantly when compared with the individual therapeutic procedures. (uba.ar)
Improved quadriceps strength after physical therapy was also significantly predictive of return to activity at 6 months. (sportsmedres.org)

In the hamstring measurement, the (hamstring) muscle is lengthened (whilst working) while in the quadriceps measurement the (quadriceps) muscle is shortened (whilst working). (footballscience.net)
The journal also publishes studies on applications in clinical settings and technical aspects of the various measurement systems employed in human muscle performance research. (iospress.com)
Standardized pulmonary function tests (PFT) were used - spirometry and respiratory muscle strength (RMS) measurement. (nel.edu)
The concept of isokinetic measurement of strength was originally related by Hislop and Perrine. (cdc.gov)
Figure 8 --An isokinetic whole-body strength measurement system. (cdc.gov)

Quadriceps muscle activity during commonly used strength training exercises shortly after total knee arthroplasty: implications for home-based exercise-selection. (omicsdi.org)
J Strength Cond Res 27(9): 2619-2625, 2013-The squat is a closed-chain lower body exercise commonly performed by many athletes. (lww.com)
Contractures of the deltoid have been reported in all three portions of the muscle but are seen most commonly in the middle portion. (medscape.com)

Taken together, these deficits result in a muscle that is weaker and behaves like that of someone much older. (sciencedaily.com)

A Kin Com MP dynamometer manufactured by Chattanooga Group, Inc., Chattanooga, TN was used to evaluate knee extensor strength. (cdc.gov)
Neil Segal, M.D., M.S., and colleagues at the University of Iowa Hospitals and Clinics followed 3,026 men and women ages 50-79 over a 30-month period in the Multicenter Knee Osteoarthritis Study (MOST) to assess whether knee extensor strength would predict OA that can be determined through X-ray or symptomatic knee OA. (womenfitness.net)
These findings suggest that targeted interventions to reduce risk for symptomatic knee OA could be directed toward increasing knee extensor strength. (womenfitness.net)
Knee extensor strength and endurance, whole body exercise capacity, and health related quality of life (Chronic Respiratory Disease Questionnaire, CRDQ) were assessed. (bmj.com)

Increases muscle thickness for hamstring and quadriceps. (hacettepe.edu.tr)
Neuromuscular electrical stimulation (NMES) is often used as a rehabilitative modality and evidence has suggested that high frequencies of NMES may elicit increases in muscle strength. (wku.edu)
Similarly, as the muscle reaches its optimal mechanical advantage, the resistance of the machine increases proportionally. (cdc.gov)

Rehabilitation consisted of isotonic and isokinetic quadriceps strengthening exercises ( wall slides , step exercises , etc). (sportsmedres.org)

They looked at the vastus lateralis, which sits on the outer thigh and is the largest of the quadricep muscles. (sciencedaily.com)
While thigh muscle strength does not predict the presence of knee OA uncovered in x-rays, it does predict incidence of painful or stiff knee OA. (womenfitness.net)
Our results showed thigh muscle strength was not a significant predictor of radiographic knee OA," the authors were quoted as saying. (womenfitness.net)
The hamstring muscle group consists of three muscles on the back of the thigh that affect hip and knee movement. (michael-loehr.com)
3. Semitendinosus - This muscle also stretches the thigh and flexes the knee, but the tendons that connect it to the bone are much narrower than those of the semimembranosus. (michael-loehr.com)
In the calf region of the leg, the gastrocnemius muscle extends from the end of the thigh through the Achilles tendon to the calcaneus. (michael-loehr.com)
The quadriceps is a four-headed muscle group on the front of the thigh that does most of the work in extending the knee. (michael-loehr.com)
When its insertion is fixed at the patella, this muscle helps flex the pelvis forward toward the thigh. (michael-loehr.com)
2. Vastus medialis - This teardrop-shaped muscle of the inner thigh attaches along the thigh and up to the inner edge of the kneecap. (michael-loehr.com)
3. Vastus intermedius - Located between the vastus medialis and the vastus lateralis on the front of the thigh, it is the deepest of the four quadriceps muscles. (michael-loehr.com)
4. Vastus lateralis - On the outside of the thigh, this is the largest of the four quadriceps muscles. (michael-loehr.com)

Body composition data were correlated to grip strength, vertical jump, push-ups, sit-ups, medicine ball (two kilogram) throw, a 75-m pursuit run, and a 20-m multistage fitness (beep) test. (nsca.com)

Therefore, angle-specific analyses are recommended to obtain supplemental information and consequently to improve knee strength testing. (springeropen.com)
Muscle thickness, pennation angle and fiber length were evaluated by radiologist by ultrasonography. (hacettepe.edu.tr)
Increased muscle strength (p = 0.039), increased pennation angle (p = 0.039) and decreased muscle thickness (p = 0.018) were found in gastrocnemius. (hacettepe.edu.tr)

Hypovitaminosis D is consistently associated with decrease in muscle function and performance and increase in disability. (hindawi.com)
The application of MSDT resulted in decrease in muscle strength (p = 0.0001), decrease in muscle flexibility (p = 0.0003) and increase in muscle thickness in one session (p = 0.0001). (hacettepe.edu.tr)
In quadriceps, an increase in muscle strength (p = 0.0001) and a decrease in flexibility (p = 0.001) were found. (hacettepe.edu.tr)
The findings will help to determine whether a neuromuscular and strength training exercise programme for the obese children population can reduce joint loading during locomotion, and thereby decrease the possible risk of developing degenerative joint diseases later in adulthood. (biomedcentral.com)

Paired samples t-tests were conducted to determine bilateral differences in strength and balance. (mjssm.me)
Bilateral dynamic knee extension strength was estimated with an extensor chair using one-repetition submaximal protocol. (biomedcentral.com)
The estimated measure of bilateral knee extension muscle strength can be used to monitor adaptations promoted by physical exercise for older adults with and without sarcopenia. (biomedcentral.com)

3 , 8 Although resting dyspnea is not generally prevalent, exercise-induced dyspnea is especially perceived in stage II-IV of sarcoidosis and correlates with reduced respiratory muscle strength. (rcjournal.com)

We found that variations between individuals in muscle (co-)activations were not explained by differences in muscle strength or HQR. (ljmu.ac.uk)
In addition, muscle mass varies greatly from person to person due to differences in height or body mass index (BMI), making it difficult to conduct comparisons and accurately elucidate the effect of KOA on muscle mass. (biomedcentral.com)

First, we showed that quadriceps strength meaningfully affects HQRs (as quadriceps gets stronger, HQR value gets lower), introducing bias when profiling individuals for injury risk. (ljmu.ac.uk)

(Ivanhoe Newswire) - Women with the strongest quadriceps appear to be protected against the development of knee osteoarthritis (OA) symptoms, according to a new study. (womenfitness.net)
These muscles are the strongest and leanest in the entire body. (michael-loehr.com)

Therefore, the objective of this review is to identify alterations in muscle strength, flexibility, joint range of motion, and alignment that may predict lower extremity injury in runners in order to improve future statistical modeling for injury risks in runners. (springer.com)
Currently available hand-held dynamometers (HHD) offer a more objective and reliable assessment of muscle force production as compared to a manual muscle test (MMT). (ijspt.org)
This study's objective was to test the validity of a one-repetition submaximal strength protocol to measure dynamic knee extension strength in older adults with and without sarcopenia. (biomedcentral.com)

Muscle biopsies of vastus lateralis were obtained from 19 out of 20 subjects. (iospress.com)

Dynamic knee extensor muscle strength is a valid measure among healthy older adults but has not been tested in the sarcopenia condition. (biomedcentral.com)

Whether similar levels of neuromuscular activity of the muscles in the operated leg, elicited during strength training exercises in machines, can be reached during strength training exercises in more simple forms is unknown. (omicsdi.org)

The aims of the study were to assess the reproducibility and validity of very weak knee flexors and extensors muscle strength with a new isokinetic evaluation procedure. (iospress.com)
Validity was determined using Spearman's correlation with isokinetic muscle strength. (biomedcentral.com)

Anatomy37

Diseases16

Chemicals and Drugs2

Analytical, Diagnostic and Therapeutic Techniques and Equipment31

Psychiatry and Psychology2

Phenomena and Processes40

Anthropology, Education, Sociology and Social Phenomena11

Health Care6

Femoris muscle6

Digital dynamometer4

Hand Held Dynamometer3

Maximal8

Weakness16

Torque15

Electromyography5

Peak7

Handheld dynamometer1

Contractions4

Contraction11

Skeletal21

Flexion7

Isokinetic strength6

Ratio4

Concentric1

Hamstrings2

Statistically significant2

Measurements2

Assessments4

Fibers5

Limb10

Participants4

Voluntary3

Peripheral3

Functional9

Patients26

Isometric hamstrin1

Atrophy2

Muscular3

Fatigue2

Eccentric5

Abstract1

Significantly3

Measurement5

Commonly3

Weaker1

Extensor strength4

Increases3

Isotonic1

Thigh11

Grip strength1

Angle3

Decrease4

Bilateral3

Dyspnea1

Differences2

Affects1

Strongest2

Objective3

Vastus lateralis1

Adults1

Activity of the muscles1

Validity2