Anova isometric contraction muscle contraction. Medical search. Frequent questions

Tensiomyography (TMG) measures the radial displacement of a muscle belly during an electrically stimulated isometric twitch response. (plos.org)
Maximal incremental cycling tests, involuntary electrically stimulated isometric quadriceps-muscle contractions, and biopsy of vastus lateralis muscle. (medscape.com)

RESULTS: Repeated measures one-way ANOVA revealed no differences for force production (CON = -1.27 ± 5%, 1CS = +0.77 ± 5%, 2CS = -0.46 ± 4%, 3CS = +0.73 ± 5%, 4CS = -1.86 ± 7%, P>0.05). (wku.edu)
The PE was tested by stretching the muscles from relaxed plantarflexion to the maximal dorsiflexion (DF) angle at 5 degrees.s-1 without raw electromyogram (EMG) activity exceeding 0.05 mV. (nih.gov)
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)
0.05) activity in the anterior trunk muscles (RA and EO) during the eccentric phase. (researchgate.net)
0.05) activity in the posterior aspect of the trunk (ES) and all lower-body muscles during the concentric phase. (researchgate.net)
0.05 for all muscles. (sampleassignmenthelp.com)
0.05), but no significant different between concentric and eccentric contraction. (ptkorea.org)

At pretesting, subjects performed maximal voluntary contractions (MVC) and the interpolated twitch technique was applied to assess %VA. Following initial testing, a fatiguing protocol was performed which consisted of 20 six-second MVCs with 3 seconds in between. (wku.edu)
Methods: Eighteen females (24.3 ± 4.8 years) and 15 males (24.1 ± 6.6 years) performed (1) isometric trunk flexion maximal voluntary contractions (MVCs) in a range of trunk positions to establish a torque-angle curve and (2) submaximal (50% MVC), intermittent isometric contraction (6 s on, 4 s off) until task failure to determine fatigability of the trunk flexor muscles. (elsevierpure.com)

Torque-angle curves, electromyography (EMG), MVC torque, and torque steadiness were compared with repeated measures ANOVA with sex as a between-subjects factor. (elsevierpure.com)
Finally, torque steadiness [coefficient of variation of torque (CV)] during submaximal isometric contractions decreased with contraction intensity and was similar for males and females across all intensities. (elsevierpure.com)
Conclusions: Unlike many limb muscle groups, males and females had similar fatigability and torque steadiness of the trunk flexor muscles during isometric contractions. (elsevierpure.com)
The purpose of this study was to investigate the influence of age on concentric isokinetic torque (CIT) and passive extensibility (PE) variables of the calf muscles of healthy women. (nih.gov)
No significant difference of joint torque was found in the steady-state for all SSC-magnitudes compared to the corresponding SHO contractions in session 1. (nature.com)
It has long been identified that this leads to increased force, torque, mechanical work and power during the shortening phase of the SSC compared to a pure shortening contraction, which is not preceded by active stretching ("SSC-effect") 2 , 3 . (nature.com)
In stretch-hold experiments, the force or torque during active stretch but also in the isometric hold phase after active stretch is enhanced compared to a fixed-end reference contraction. (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)
In vivo, the force-velocity relation (F-v-r) is typically derived from the torque-angular velocity relation (T-ω-r), which is subject to two factors that may influence resulting measurements: tendon compliance and preload prior to contraction. (nature.com)
The simulation results matched a key pattern observed in our recorded in vivo experimental data: during preloaded contractions, torque output of the muscle was increased when compared with non-preloaded contractions from literature. (nature.com)
However, by now it is not possible to measure in vivo muscle forces non-invasively, so that the F-v-r of in vivo human muscles is commonly inferred from the joint torque-angular velocity relation (T-ω-r). (nature.com)
Human and animal studies have identified sarcomerogenesis as an outcome of eccentric training indicated by more torque generation with the muscle in a lengthened position. (uky.edu)
Using systems identification techniques, we found that this reduced torque could be attributed largely to a reduced reflex response, without measurable change in the muscle contribution. (biomedcentral.com)
Results stated that there was no significant benefit of acute stretching on isometric force production, isokinetic torque, or jumping height. (fromemuseum.org)

Performance of rat plantar flexor muscles by active stretching during ankle rotations and isometric contractions. (cdc.gov)
The performance of rat plantar flexor muscles by repeated stretches (30) using velocity-controlled ankle rotations from 1.57 to 0.70 rad (0.87 rad s-1: slow stretch, 10.47 rad s-1: fast stretch) and repeated isometric contractions (30) at 1.13 rad was examined. (cdc.gov)
The velocity of ankle rotations producing stretches of rat plantar flexor muscles working in situ is not a factor in reducing muscle performance. (cdc.gov)
Arampatzis A, Karamanidis K, Stafilidis S, Morey-Klapsing G, DeMonte G, Brüggemann GP (2006) Effect of different ankle-and knee-joint positions on gastrocnemius medialis fascicle length and EMG activity during isometric plantar flexion. (springer.com)
The in vivo plantar flexors' T-ω-r was determined during preloaded maximum voluntary shortening contractions at 0-200°/s. (nature.com)

Results of SPADI, Low Flexion Test, Internal and External Rotation ROM, ER strength, Pressure Pain Threshold (kPa) of each muscle for both groups at Preintervention and Postintervention Evaluations. (rbf-bjpt.org.br)
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)

In recent years, several studies involving electromyography of masticatory muscles have been performed 13-16 . (bvsalud.org)
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)
The infraspinatus and posterior deltoid muscle activity were observed using surface electromyography. (ptkorea.org)
There is insufficient scientific evidence to conclude that wearing back belts reduces risk of injury to the back based on changes in intra-abdominal pressure (IAP) and trunk muscle electromyography (EMG). (cdc.gov)
He conducted a study using males from a university population who were pre and post tested for isometric force and surface electromyography activity. (fromemuseum.org)

From stretch number 18 to number 30, slow stretches tend to produce greater force deficits, although this was not significant (two way ANOVA, P=0.09). (cdc.gov)
Residual force enhancement (RFE) is the increase in steady-state force after active stretch relative to the force after isometric contraction at the same final length. (nau.edu)
METs are a group of relatively pain free mobilization techniques which are used to regain mobility, reduce tissue edema, reduce muscle spasm, stretch fibrous tissue and retrain stabilizing function of the intersegmentally connected muscles [4]. (journalmedicalthesis.com)
Moreover, loose ligaments produce down-regulation related to muscle stretch receptors, reducing the proprioception10. (bvsalud.org)
Although the influence of different range of motions and muscle-tendon unit lengths has been investigated in pure stretch-hold experiments in vivo, the contribution to a SSC movement in human muscles remains unclear. (nature.com)
A stretch-shortening cycle (SSC) is a common muscle action during exercise and everyday movement. (nature.com)
The current study was designed to determine the impact of an important anti-spasticity medication, tizanidine, by quantifying the effect of single dose tizanidine on reflex and intrinsic components of muscle response to stretch in individuals with spinal cord injury. (biomedcentral.com)
45 seconds was the protocol stretch time used for each muscle group and was repeated four times with a 15 second break in-between. (fromemuseum.org)

MEPY relaxed the contraction induced by phenylephrine (PE) both in endothelium-intact and endothelium-denuded aortic rings concentration dependently. (biomedcentral.com)
The effects of 17P (1 nmol/L -10 micro mol/L) on spontaneous and agonist-induced (oxytocin 0.5 nmol/L for pregnant, phenylephrine 10 μmol/L for non-pregnant) contractions were measured. (biomedcentral.com)

In two sessions, 25 healthy participants performed isometric reference (ISO), shortening hold (SHO) and SSC contractions on an isokinetic dynamometer. (nature.com)
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)
Isometric and dynamic strength were measured by means of a motor-driven dynamometer. (health-beauty-connection.com)
METHODS: Eleven endurance and ten power athletes (age: 18-33 years) performed isokinetic fatigue and isometric PAP protocols with knee extensors and flexors on computerised dynamometer. (researcher.life)

Sex differences in strength and fatigability are established for many limb muscles and back extensor muscles, but it is unknown if sex differences exist for the abdominal muscles despite their functional importance. (elsevierpure.com)
The purpose of this pilot study was to determine differences in muscle activity and pinch force generation between the traditional scaling technique and a modified scaling technique. (adha.org)
Skeletal muscle provides distinct experimental challenges due to inherent differences across muscle groups, including fiber type and size that may limit experimental approaches. (biomedcentral.com)
However, due to inherent differences across muscles, investigators are often forced to apply specific experimental approaches for each muscle. (biomedcentral.com)
OBJECTIVE: To determine the differences in the kinematic parameters between the grab start (GS) and track start (TS) techniques and assess the interactions between the lower limb muscle strength and swim start performance. (iospress.com)
The isometric force measures revealed no significant differences between the 5 positions ( P = .56). (uky.edu)
To determine whether differences exist in exercise performance, muscle function, and muscle mitochondrial oxidative capacity and content between symptomatic and asymptomatic statin users, and control subjects. (medscape.com)
[ 12 ] STOMP researchers found that more patients in the atorvastatin group than in the placebo group developed muscle complaints, but there were no differences in muscle strength and endurance, aerobic performance, or physical activity levels after 6 months of treatment. (medscape.com)
The aim of the current study was to examine whether differences exist in aerobic exercise performance, muscle contractile function, and muscle mitochondrial oxidative capacity and content between long-term symptomatic and asymptomatic statin users, and control subjects who did not use a statin drug. (medscape.com)

The serratus anterior is a muscle you need for swimming, especially if you want to get that nice Serape Effect rotation going. (trihardist.com)
This is an isometric contraction for the serratus anterior. (trihardist.com)

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)

There can be voluntary or involuntary muscle guarding of the elbow during motion due to prolonged pain. (journalmedicalthesis.com)
The nonstriated involuntary muscle tissue of blood vessels. (lookformedical.com)

Performance was assessed by the isometric force at ankle positions of 1.57 and 0.70 rad and the time to produce 50% of the maximal force at 1.57 rad. (cdc.gov)
Reductions in isometric force were greater at an ankle position of 1.57 rad than at 0.70 rad. (cdc.gov)
We tested for changes in the AT force-elongation relationship using dynamometry and ultrasonography during isometric voluntary ankle plantarflexion ramp contractions, conducted 20-28 h pre-run, immediately pre-run, immediately post-run and 20-28 h post-run. (springer.com)
Ankle, hip, and knee muscles were tested isokinetically at 60 ∘ /s and the tests were spread over 24 h to avoid fatigue. (iospress.com)
This study was designed to help us understand the mechanisms of action of tizanidine on spasticity in spinal cord injured subjects with incomplete injury, by quantifying the effects of a single dose of tizanidine on ankle muscle intrinsic and reflex components. (biomedcentral.com)

Competitive marathon running and regular high intensity distance running in young and middle-aged adults may not produce leg muscle hypertrophy due to insufficient recovery from the damaging running bout, although there have been no studies that have investigated the effects of running on leg muscle morphology in older subjects. (researchgate.net)

CONCLUSIONS: The results show that the TMG patterns of PAP and fatigue in the vastus muscle differ between endurance and power athletes. (researcher.life)

Exercise was performed in a range of 90° ER, divided into three phases: concentric, isometric, and eccentric. (ptkorea.org)

Rest periods (3 min) between contractions (1900 ms) eliminated effects of fatigue. (cdc.gov)
Muscular fatigue causes a slowing of muscle contraction velocity, reversing as the muscle recovers from fatigue [ 21 - 24 ]. (plos.org)
The FDB is made up of small predominantly type IIa and IIx fibers that collectively produce less peak isometric force than the extensor digitorum longus (EDL) or soleus muscles, but demonstrates a greater fatigue resistance than the EDL. (biomedcentral.com)
BACKGROUND: Postactivation potentiation (PAP) enhances contractility of skeletal muscle whereas fatigue deteriorates it. (researcher.life)
OBJECTIVE: To compare the patterns of change in knee muscle contractility induced by PAP and fatigue between endurance and power athletes. (researcher.life)
A significant correlation (r= 0.51-0.73) between the fatigue indices and changes in TMG parameters was observed for the vastus medialis muscle only. (researcher.life)
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)
Statin use attenuated substrate use during maximal exercise performance, induced muscle fatigue during repeated muscle contractions, and decreased muscle mitochondrial oxidative capacity. (medscape.com)

Gardner K, Lavagnino M, Egerbacher M, Arnoczky SP (2012) Reestablishment of cytoskeletal tensional homeostasis in lax tendons occurs through an actin mediated cellular contraction of the extracellular matrix. (springer.com)
In addition, MEPY inhibited the contraction induced by extracellular Ca 2+ in endothelium-denuded rat thoracic aorta rings pre-contracted by PE (1 μM) or KCl (60 mM) in Ca 2+ -free solution. (biomedcentral.com)

After eccentric training the only arc of motion that had a positive improvement in the capacity to absorb eccentric loads was the arc of motion that represented eccentric contractions at the longest muscle length. (uky.edu)

It is concluded that isometric contractions of skeletal muscle can create a force deficit which is much less than that following stretches. (cdc.gov)
Use of a modified scaling technique may reduce muscle activity and pinch force generation as compared to the traditional lateral pressure scaling technique during instrumentation. (adha.org)
These muscles each offer unique advantages across a host of methodologies including measuring isometric force production, susceptibility to muscle injury, mitochondrial respiration, protein content, and histology. (biomedcentral.com)
Biewener AA, Roberts TJ (2000) Muscle and tendon contributions to force, work, and elastic energy savings: a comparative perspective. (springer.com)
One of the most fundamental characteristics of skeletal muscle is the force-velocity relation (F-v-r), which has been researched for over a century 1 . (nature.com)
Anatomical organization of intrinsic wing muscles suggests specific roles for the different motor elements in wing shape modulation, but testing these hypothesized functions requires challenging measurements of muscle activation and strain patterns, and force dynamics. (biologists.com)
The aortic rings were placed between 2 tungsten stirrups and connected to an isometric force transducer. (biomedcentral.com)
Results did not relate to the acute effects of static stretching but only the acute effects of isometric force. (fromemuseum.org)

Results The effects of braces on the electric activity of tibialis anterior, semitendinosus and erector spinae muscles were significantly different in the loading response, mid-stance, push-off and swing phases of walking. (ac.ir)
The activity of the left masseter muscle was significantly higher (p=0.0072) in the volunteers with TMD and GJH compared with in the individuals with TMD but without hypermobility. (bvsalud.org)

The results are consistent with the hypothesis that RFE is reduced in mdm skeletal muscles due to impaired Ca2+ dependent titin-actin interactions resulting from the small deletion in N2A titin. (nau.edu)
The results suggest an age-related decrease in calf muscle CIT, muscle length and PE. (nih.gov)
Hypokalemic periodic paralysis (HypoPP) is an ion channelopathy of skeletal muscle characterized by attacks of muscle weakness associated with low serum K + . HypoPP results from a transient failure of muscle fiber excitability. (jci.org)
The results highlight the experimental flexibility afforded the investigator by using the FDB muscle to assess mechanisms that regulate skeletal muscle function. (biomedcentral.com)
The electroporation of cDNA or shRNA into muscles often delivers inconsistent results due to both the size of the muscle and anatomical location, which each impede uniform distribution of cDNA. (biomedcentral.com)
Between-subject ANOVA was used, as the data was normally distributed, and the results of homogeneity and sphericity tests also met the assumption. (sampleassignmenthelp.com)
Our results indicate that the axial rotation biofeedback during sitting ER exercise might be effective method to activating selective infraspinatus muscle and recommended to enhance the dynamic stability of the shoulder joint. (ptkorea.org)
Muscle such as the gasrtocnemuis may show different results due to the higher percentage of fast twitch muscle fibres which performs larger, more powerful movements REF. The study did not show the acute effects of static stretching so we cannot assume these results would or would not enhance range of motion/flexibility gains prior to any sporting events. (fromemuseum.org)

Tensiomyography measures the radial displacement of a muscle during an electrically evoked twitch contraction. (plos.org)
Several formulas currently exist to calculate the rate of displacement during the contraction phase of the maximal twitch response. (plos.org)
A muscle twitch is the contractile response to a single electrochemical signal of the nervous system or artificial electrical stimulation of the muscle. (plos.org)
As such, a twitch provides information on muscle contractile properties and the functioning of the excitation-contraction coupling process. (plos.org)

In addition, they reported that isometric exercises such as prone bridge could provide adequate stimulation for the core muscles. (researchgate.net)
Another problematic case is that of the gelatinous cirroteuthids, whose weakly muscled mantles are prone to substantial shrinkage during preservation. (wikipedia.org)

Reproducibility of knee extensor and flexor contraction velocity in healthy men and women assessed using tensiomyography: A registered report. (plos.org)
Langen G, Lohr C, Ueberschär O, Behringer M (2022) Reproducibility of knee extensor and flexor contraction velocity in healthy men and women assessed using tensiomyography: A study protocol. (plos.org)
Therefore, a shorter Tc is commonly associated with a higher contraction velocity [ 8 - 11 ]. (plos.org)
This effect increased with increasing contraction velocity and can be explained by a rapidly recoiling tendon, allowing the contractile element to contract more slowly, thus developing higher forces compared with non-preloaded contractions. (nature.com)

This study aims to evaluate the effect of knee brace on the electric activity of selected lower limb muscles during walking in older adults. (ac.ir)

[ 4-6 ] Although the mechanisms are poorly understood, statins have been shown to reduce muscle mitochondrial oxidative capacity and content in humans [ 7-10 ] and impair exercise-mediated mitochondrial adaptations in skeletal muscle. (medscape.com)

The mdm mutation in mice, characterized by a small deletion in N2A titin, has been proposed to prevent N2A titin-actin interactions so that active mdm muscles are more compliant than WT. (nau.edu)
Dahners LE, Banes AJ, Burridge KW (1986) The relationship of actin to ligament contraction. (springer.com)
Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments. (lookformedical.com)

Lower self-reported physical activity was associated with greater fatigability of trunk flexor muscles. (elsevierpure.com)
The relationship between strength and fatigability of the trunk flexor muscles and physical activity supports the importance of abdominal muscle strengthening to offset fatigability in both males and females. (elsevierpure.com)

Squatting was performed at an angle of 135º-150º because strength of knee extensor (muscles) varies between these angles and is an important consideration for the performance of numerous physical daily routine activities such as walking, running, cycling, stepping and driving including development of fundamental skills for different sports across all ages and sex. (omicsonline.org)

A subtype of striated muscle, attached by TENDONS to the SKELETON. (lookformedical.com)

mass, 91.6 ± 14.0 kg) performed pre- and post-test maximal voluntary isometric contractions (MVIC) of the biceps brachii, with a pre-determined number of conditioning sets (CS) between. (wku.edu)
The active electrode was placed at the mid-point of biceps muscle and the reference electrode at the acromion. (bioline.org.br)
The examiner held the subject′s elbow in his left hand with the thumb over the tendon of the biceps muscle. (bioline.org.br)

Tensiomyography (TMG) of the vastus medialis and semitendinosus muscle medialis was performed before the protocols and during a 10-min recovery. (researcher.life)

Between subjects repeated measures ANOVA provides evidence for failing to reject the null hypothesis at a 5% level of significance. (sampleassignmenthelp.com)
Data were analyzed by means of repeated measures ANOVA . (health-beauty-connection.com)
Repeated measures ANOVA and effect sizes (Cohen's d ) were used to test if nutrient intake changed over time and if placing was associated with intake. (biomedcentral.com)

mu]m/s, as well as isometric contractions at the initial and final lengths. (nau.edu)
Therefore, the physiological relevance of rFE might be particularly important for movements at greater muscle-tendon unit lengths. (nature.com)

Subject's dominant lower leg was strapped to an attachment set at an angle of 110° (180° = full extension) for isometric knee extensions. (wku.edu)

Muscle activity and pinch forces were assessed while participants performed traditional and modified scaling techniques with designated instruments on artificial calculus applied to the lower left quadrant of a typodont, for a period of five minutes. (adha.org)

This applies when the reference contraction is length-matched and has the same activation level. (nature.com)
2020) compared the muscle activation of rectus femoris and rectus abdominis in sit-up and curl-up. (researchgate.net)
The aim of this study was to compare the rectus abdominis (RA) muscle activation during the kipping toes-to-bar (KTB) and the strict toes-to-bar (STB) movements. (researchgate.net)
RA muscle activation was measured during the KTB and STB exercises in 12 healthy young men. (researchgate.net)
In vivo studies during different flight modes revealed variation in strain profile, activation timing and duration, and contractile cycle frequency of the humerotriceps, suggesting that this muscle may alter wing shape in diverse ways. (biologists.com)
To examine the multifunction potential of the humerotriceps, we developed an in situ work loop approach to measure how activation duration and contractile cycle frequency affected muscle work and power across the full range of activation onset times. (biologists.com)
ATP causes smooth muscle contractions in rat and guinea pig prostates by activation of purinergic receptors. (arccjournals.com)
Glucose transport can be activated in skeletal muscle in response to insulin via activation of phosphoinositide (PI) 3-kinase and in response to contractions or hypoxia, presumably via activation of 5′ AMP-activated protein kinase (AMPK). (diabetesjournals.org)
Activation of AMPKα2 in response to muscle contraction/ exercise is associated with a parallel and normal increase in glucose transport in insulin-resistant skeletal muscle. (diabetesjournals.org)
EP2 and EP4 receptor activation increases cAMP and causes smooth muscle relaxation. (fxr-agonists.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)
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)

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)

Quadriceps muscle activity during commonly used strength training exercises shortly after total knee arthroplasty: implications for home-based exercise-selection. (omicsdi.org)

In addition, isometric shoulder ER was measured at 5 points throughout the arc of motion (45° IR, 30° IR, 15° IR, 0°, and 15° ER). (uky.edu)
The shoulder is a pretty intricate area, and little things that might seem small (like an imbalance in the muscle that holds the shoulder blade against the ribs) can really FUBAR the joint in a dozen years or two. (trihardist.com)

This decrease in active muscle stiffness should be associated with reduced RFE. (nau.edu)
Dm provides information on skeletal muscle stiffness, morphological and structural changes [ 2 - 4 ]. (plos.org)
To study the long term effects of Muscle energy technique in post surgical elbow stiffness. (journalmedicalthesis.com)
Muscle Energy Technique, Elbow Stiffness. (journalmedicalthesis.com)
In contrast, there were no significant changes in intrinsic muscle stiffness after the administration of tizanidine. (biomedcentral.com)

Postactivation Potentiation (PAP) is the phenomenon of increased, albeit transient, contractile properties of skeletal muscle resulting from non-fatiguing sub-maximal repetitions. (wku.edu)
The smaller "angular delay" for the older women at 120 and 180 degrees.s-1 indicates that CIT testing at rapid velocities can be used to examine age-related changes in calf muscle contractile properties in relation to rapid velocities of movement. (nih.gov)
The rate of muscle displacement is increasingly reported to assess contractile properties. (plos.org)

The purpose of this study was to compare the effect of sustained squat posture (a yogic posture) of athletes among male (n1=32) and female (n2=18) with high and low performance (based upon median split method) on EMG activity of Vastus Medialis (VM) and Vastus Lateralis (VL) muscles for 120 seconds. (omicsonline.org)
Therefore, we replicated the in vivo experiment using a Hill-type muscle model of the gastrocnemius medialis. (nature.com)

The ability to assess skeletal muscle function and delineate regulatory mechanisms is essential to uncovering therapeutic approaches that preserve functional independence in a disease state. (biomedcentral.com)
To date, surprisingly few studies have taken advantage of the FDB to investigate mechanisms regulating skeletal muscle function. (biomedcentral.com)
For example, the Effect of Statins on Skeletal Muscle Function and Performance (STOMP) trial is, to our knowledge, the only randomized, double-blind clinical trial that has examined aerobic exercise performance and muscle strength before and after treatmentwith placebo or high-dose atorvastatin. (medscape.com)

Aim: This study aimed to verify the presence of generalized joint hypermobility (GHJ) in individuals with temporomandibular disorders (TMD) and asymptomatic individuals and to compare the activity of their masticatory muscles. (bvsalud.org)
Also, the right temporal muscle showed higher activity in subjects with GJH and TMD compared with asymptomatic individuals without hypermobility (p=0.0248). (bvsalud.org)
It is possible to consider that the proprioceptive changes in the modulation of muscle contraction in individuals with GJH may influence the pattern of electrical activity on masticatory muscles associated to a clinical state of TMD. (bvsalud.org)
These studies have demonstrated that there is higher electrical activity of the masticatory muscles at rest, especially the anterior temporal, in individuals with TMD. (bvsalud.org)
The purpose of this study was to compare muscle activity and kinetics during the back squat and overhead squat performed at three relative intensities (60, 75 and 90% 3RM). (researchgate.net)
The present study is the first one to compare the RA muscle activity using EMG for the KTB and STB movements performed in different manners with oscillating and without oscillating. (researchgate.net)
They reported that greater abdominal muscle activity was produced in thigh unsupported exercise than supported exercise. (researchgate.net)
2020) evaluated abdominal muscle activity using the sahrmann five-level core stability test reported that abdominal muscle activity was higher when heels did not contact the ground in levels 3 and 5. (researchgate.net)
Aspe and Swinton, (2014) compared the muscle activity between the back and overhead squat with different intensities. (researchgate.net)
Besides they compared muscle activity during some isolated trunk exercises and squat exercises. (researchgate.net)
Preload is typically applied to minimize the effects of the electromechanical delay, to guarantee maximal muscle activity and to reduce muscle-tendon unit (MTU) compliance. (nature.com)
We determined the effects of insulin and muscle contraction/hypoxia on PI 3-kinase, AMPK, and glucose transport activity in epitrochlearis skeletal muscle from insulin-resistant Zucker ( fa/ fa ) rats. (diabetesjournals.org)
Insulin-stimulated glucose transport in isolated skeletal muscle was reduced 47% in obese versus lean rats, with a parallel 42% reduction in tyrosine-associated PI 3-kinase activity. (diabetesjournals.org)
Isoform-specific AMPK activity was measured in skeletal muscle in response to insulin, contraction, or hypoxia. (diabetesjournals.org)
Contraction increased AMPKα1 activity 2.3-fold in lean rats, whereas no effect was noted in obese rats. (diabetesjournals.org)
Regardless of genotype, contraction, and hypoxia, each increased AMPKα2 activity more than fivefold, whereas insulin did not alter either AMPKα1 or -α2 activity in skeletal muscle. (diabetesjournals.org)
Despite that COX-2 is typically considered an inducible isoform highly expressed during the inflammatory state, a constitutive expression has been demonstrated in several GI tissues, including the murine proximal colon, where products derived from constitutive COX-2 seem to contribute to the tonic inhibition of the contractile activity of circular smooth muscle layer [6]. (fxr-agonists.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 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)

Background: Optimal function of the abdominal muscles is necessary for several life functions including lifting and carrying tasks. (elsevierpure.com)
Muscles forming the ABDOMINAL WALL including RECTUS ABDOMINIS, external and internal oblique muscles, transversus abdominis, and quadratus abdominis. (lookformedical.com)

Although there is conflicting data on the effects of short-term training, it is possible that relatively long periods of walking, jogging, or intermittent running for over half a year can increase leg muscle size among older adults. (researchgate.net)
According to their effects on smooth muscle, the four EP receptors can be classified in two groups: "relax- ant" EP2 and EP4 receptors and "contractile" EP1 and EP3 receptors [10]. (fxr-agonists.com)
This study, using in vitro strips of human uterine smooth muscle, aimed to investigate the direct non-genomic effects of 17P on spontaneous and induced contractions in tissues obtained during pregnancy, and in the non-pregnant state. (biomedcentral.com)
The aims of this study were focused specifically on the latter mechanism i.e. to investigate the direct effects of 17P on contractions of isolated human myometrium, both spontaneous and agonist-induced, in tissue obtained during pregnancy and in the non-pregnant state. (biomedcentral.com)
Few studies have examined the effects of statins on muscle contractile function and exercise performance, and even fewer studies have examined this in statin users with muscle complaints. (medscape.com)

First, we characterized the FDB phenotype and provide reference comparisons to skeletal muscles commonly used in the field. (biomedcentral.com)
Using a novel approach, we also demonstrate methods for assessing mitochondrial respiration in the FDB, which are comparable to the commonly used gastrocnemius muscle. (biomedcentral.com)
Muscles commonly used for functional and mechanistic experiments include the extensor digitorum longus (EDL), soleus, plantaris, gastrocnemius, tibialis anterior (TA), and/or the quadriceps. (biomedcentral.com)

Bird 11 considers that GJH depends not only on ligament laxity, but also on skin, blood vessels and adjacent muscle tissue that allow the occurrence of this phenomenon. (bvsalud.org)

Muscle energy techniques (MET) are soft tissue or joint techniques which are employed in the treatment of musculoskeletal dysfunctions. (journalmedicalthesis.com)
Investigators currently employ a variety of established methods for answering such questions, but are often experimentally hampered by unique inherent heterogeneity between muscle groups and cells within the same muscle tissue. (biomedcentral.com)
In our study, FE extract inhibited the neurogenic contractions induced by EFS on isolated rat anterior prostate tissue. (arccjournals.com)
A process leading to shortening and/or development of tension in muscle tissue. (lookformedical.com)

OBJECTIVE: This study aimed to investigate acute muscle swelling in the IFM after TFE and the association between changes in NH and IFM size. (researcher.life)

Despite numerous investigations, the impact of tizanidine, an anti-spastic medication, on changes in reflex and muscle mechanical properties in spasticity remains unclear. (biomedcentral.com)

3 metabolic equivalents [METs], which is defined as the ratio of the work metabolic rate to the resting metabolic rate) intensity estimated by accelerometer is positively correlated with lower body muscle size and function in older adults. (researchgate.net)

Unlike the other muscles, inherent properties of the FDB muscle make it amenable to multiple in vitro- and in vivo-based microscopy methods. (biomedcentral.com)

This most likely occurs from defects in postreceptor insulin signal transduction at the level of insulin receptor substrate-1 and phosphoinositide (PI) 3-kinase ( 6 - 9 ) as well as defects in trafficking and/or function of GLUT4 ( 10 , 11 ), the major insulin-regulated GLUT isoform expressed in skeletal muscle ( 12 ). (diabetesjournals.org)

Comparison of isometric and dynamic strength from pre- to posttesting was evaluated with a repeated-measure ANOVA using time and arc or positions as within factors. (uky.edu)
Therefore, the purpose of this study was to determine which strength training exercises that activated the muscles in the operated leg the most after TKA. (omicsdi.org)

VM and VL from the Quadriceps muscle group were chosen for recording the physiological signal simultaneously from right and left leg of the subjects, as these muscles determines stress on the patellofemoral joint and stabilizes the patellar bone during squatting. (omicsonline.org)
The WBV group performed static and dynamic knee-extensor exercises on a vibration platform (35-40 Hz, 2.28-5.09g), which mechanically loaded the bone and evoked reflexive muscle contractions. (health-beauty-connection.com)

In conclusion, obesity-related insulin resistance is associated with an isoform-specific impairment in AMPKα1 in response to contraction. (diabetesjournals.org)

Thus, preloaded and non-preloaded contractions may result in different T-ω-r characteristics due to tendon compliance. (nature.com)

Our findings demonstrate that tizanidine acts to reduce reflex mechanical responses substantially, without inducing comparable changes in intrinsic muscle properties in individuals with spinal cord injury. (biomedcentral.com)

Anatomy77

Organisms15

Diseases7

Chemicals and Drugs74

Analytical, Diagnostic and Therapeutic Techniques and Equipment19

Psychiatry and Psychology6

Phenomena and Processes60

Disciplines and Occupations2

Anthropology, Education, Sociology and Social Phenomena3

Information Science3

Health Care2

Electrically stimulated isometric2

0.057

Voluntary contractions2

Torque14

Plantar5

Flexion2

Electromyography5

Stretch8

Phenylephrine2

Dynamometer4

Differences9

Serratus Anterior2

Submaximal1

Involuntary2

Ankle5

Middle-aged1

Vastus muscle1

Concentric1

Fatigue8

Extracellular2

Eccentric1

Force8

Significantly2

Results8

Twitch4

Prone2

Velocity4

Lower Limb Muscles1

Humans1

Actin3

Flexor muscles2

Extensor Muscles1

Tendons1

Biceps3

Tensiomyography1

Measures3

Lengths2

Knee extensions1

Participants performed1

Activation13

Peak quadriceps muscle1

Quadriceps muscle activity1

Shoulder2

Stiffness5

Contractile properties3

Medialis2

Skeletal muscle function3

Activity21

Abdominal2

Effects5

Commonly3

Blood vessels1

Tissue4

Acute1

Remains unclear1

Intensity1

Methods1

Occurs1

Strength2

Bone2

Conclusion1

Characteristics1

Intrinsic muscle1