maximum voluntary isometric contraction

maximum voluntary isometric contraction (MVIC)

the peak force produced by a muscle as it contracts while pulling against an immovable object.
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During strength testing, maximum voluntary isometric contraction (MVIC), defined as the highest torque achieved during three maximal contractions (~3 s contractions separated by 60 s of rest), was determined bilaterally in the plantar flexor (PF) and knee extensor (KE) muscle groups.
Abbreviations: 6MWT = 6-minute walk test, DGI = Dynamic Gait Index, FCWS = fastest comfortable walking speed, FMA = Fugl-Meyer Assessment, KE = knee extensor, MVIC = maximum voluntary isometric contraction, PF = plantar flexor, POWER = Poststroke Optimization of Walking using Explosive Resistance, SSWS = self-selected walking speed, VA = Department of Veterans Affairs.
Manual muscle testing has been tested for validity and reliability and is a procedure often used to identify the maximum voluntary isometric contraction (MVIC) so that EMG activity during separate trials can be compared as a percentage of the MVIC (Cuthbert and Good heart, 2007; Frese et al.
Once electrodes were secured, participants were explained the manual muscle testing protocol for achieving data regarding their maximum voluntary isometric contraction (MVIC) for each of the four muscles tested.
After the electrode positioning, the students were prepared for the maximum voluntary isometric contraction test.
The study compared mechanical and myoelectrical measurements of motor fatigue with patient ratings of fatigue during 30 seconds of maximum voluntary isometric contraction of two muscle groups, the elbow flexors and hand-grip muscles.
Abbreviations: AD = anterior deltoid, BB = biceps brachii, EMG = electromyography, MD = middle deltoid, ME = mechanical effectiveness, MVC = maximum voluntary isometric contraction, PC = principal component, PCA = principal component analysis, PD = posterior deltoid, PM = pectoralis major, SCI = spinal cord injury, sEMG = surface electromyography, TB = triceps brachii, UT = upper trapezius.
These maximum voluntary isometric contraction trials were used to verify the low-intensity level of the contractions and for normalization purposes.
Muscle activation was recorded as a percentage of maximum voluntary isometric contraction.
Next, a value for maximum voluntary isometric contraction (MVIC) was determined.
Prior to the propulsion data collection, EMG activity was recorded during maximum voluntary isometric contraction (MVC).
Strength is the force or moment produced by a single maximum voluntary isometric contraction.

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