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Exhaustive stretch‐shortening cycle exercise: no contralateral effects on muscle activity in maximal motor performances
Author(s) -
Regueme S. C.,
Barthèlemy J.,
Nicol C.
Publication year - 2007
Publication title -
scandinavian journal of medicine and science in sports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.575
H-Index - 115
eISSN - 1600-0838
pISSN - 0905-7188
DOI - 10.1111/j.1600-0838.2006.00614.x
Subject(s) - isometric exercise , medicine , physical medicine and rehabilitation , triceps surae muscle , muscle fatigue , stretch shortening cycle , physical therapy , muscle contraction , delayed onset muscle soreness , electromyography , cardiology , muscle damage , physiology , jumping
Minor cross‐over effects of unilateral muscle fatigue have been reported after isometric exercises. The present study re‐examined this possibility after an exhaustive stretch‐shortening cycle (SSC)‐type exercise. Twenty‐five subjects performed on a sledge apparatus a unilateral exhaustive rebound exercise involving mostly the triceps surae muscle group. Ipsilateral vs contralateral fatigue effects were compared in uni‐ and bilateral tests that included a maximal isometric voluntary contraction (MVC) and a series of 10 maximal drop jumps (DJ). These tests were carried out just before and after (POST) the exhaustive SSC exercise, and were repeated 2 days later (D2), at the expected time of major inflammation and pain. The exercised (fatigued) leg analysis revealed significant declines in MVC and DJ performances at POST and D2, the latter ones being associated with significant decreases in voluntary muscle activity. In contrast, no significant change was found for the non‐fatigued leg. These results do not support the existence of cross‐over effects after exhaustive SSC exercise, at least when tested in maximal static and dynamic unilateral motor tasks.