Abstract
PURPOSE: This study was designed to determine if passive static stretch of one leg would alter the strength endurance of the contralateral unstretched leg. METHODS: Twenty-six college students performed test-retest right leg knee-flexion muscle strength endurance tests (number of lifts using 25% body weight). The tests were done on four different days, with two tests following no-stretching (RNS), and two following stretching (RST) of the right hamstring. Left leg knee-flexion muscle strength endurance tests were also done before and after stretching the right hamstring. RESULTS: Stretching the right hamstring significantly (p<0.05) decreased the number of lifts done by either the right or left leg. This stretching effect was similar for both test-retest days. Means ± standard deviation are summarized below.TableCONCLUSION: Stretching the right hamstring not only decreases the strength endurance of the stretched right leg, but also decreases the strength endurance of the contralateral unstretched leg.
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