Direct Relation of Acute Effects of Static Stretching on Isokinetic Torque Production With Initial Flexibility Level

in International Journal of Sports Physiology and Performance
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To examine the acute effect of a single static-stretching session of hamstring muscles on torque production in relation with individual flexibility.


Maximal voluntary concentric torque of hamstring muscles was measured before and after a static-stretching session (6 × 30 s). Torque changes were correlated with the flexibility level determined at the onset of the experimental procedure.


The hamstring-stretching intervention significantly reduced maximal concentric torque in participants with low and high hamstring flexibility. Hamstring flexibility and torque decrease, determined immediately after the stretching procedure, were negatively correlated.


Torque decrease measured after the static-stretching session is dependent on participant flexibility. Participants with low flexibility are much more likely to demonstrate large torque decreases poststretching.

The authors are with the Faculty of Sport Sciences, University of Bourgogne, Dijon, France. Address author correspondence to Nicolas Babault at