The Effect of Static Stretching on Maximal Voluntary Contraction and Force-Time Curve Characteristics

in Journal of Sport Rehabilitation
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To examine the effect of static stretching on maximal voluntary contraction (MVC) and isometric force-time curve characteristics of leg extensor muscles and EMG activity of rectus femoris (RF), biceps femoris (BF), and gastrocnemius (GA).


A within subjects experimental design.


Ten healthy students were tested after a jogging and a jogging/stretch protocol.


The stretching protocol involved a 10 min jog and seven static stretching exercises.

Main Outcomes:

Measurements included MVC, time achieved to MVC (TMVC), force at 100ms (F100), index of relative force (IRF), index of rate of force development (IRFD), and average integrated EMG activity (AEMG).


There were slight but no significant changes in MVC (1%), TMVC (4.8%), F100 (7.8%), IRF (1%), and IRFD (3.5%) between measurement. A significant difference (21%; P < 0.05) in AEMG of RF was found.


The present study indicated that a moderate volume of static stretching did not alter significantly the MVC and the isometric force-time curve characteristics. Neural inhibition, as it is reflected from AEMG of RF, did not alter MVC and isometric force-time curve characteristics.

The authors are with the Laboratory of Sport Biomechanics, Aristotle University of Thessaloniki, Department of Physical Education and Sport Science, Serres, Greece.