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Acute effects of static passive vs contract-relax short-duration stretching on isometric and isokinetic performance in knee muscles: A single-group, pilot study

Abstract : BACKGROUND: Research suggests that the effect of short bouts of stretching on muscle strength and ROM gains depends on the total stretching volume. OBJECTIVE: We assessed the effects of short bouts of static passive (SSS) and contract-relax (SCR) stretching on range of motion (ROM) and muscular strength. METHODS: Twenty volunteers performed two stretch protocols in a randomized order on two separate days, using the SSS and SCR techniques. Maximal ROM was tested prior to (pre-S), immediately after (post-I) and 10 minutes after (post-10) the stretch protocol. Maximal isometric voluntary contraction (MVC), isokinetic concentric peak moment (F-PM) and angle of peak moment (F-PMa) in the knee flexors, and concentric flexion/extension PM ratio (F/E) were measured and evaluated before (pre) and after (post) the stretch protocol. RESULTS: Both stretching techniques showed significant time-effects (pre vs post-I and post-10) but no interaction effects (time x techniques). There were small but significant effects between intervention-paired comparisons for F-PM, F-PMa and F/E ratios after SSS, and for F-MVC and F-PMa measures after SCR stretch techniques. CONCLUSIONS: Short-stretch techniques have trivial and small effects on loss of strength, increase the ROM for at least 10 min and slightly decrease the concentric F/E ratio. Using SSS could create some risk of hamstring injuries.
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https://hal-u-picardie.archives-ouvertes.fr/hal-03594541
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Soumis le : mercredi 2 mars 2022 - 16:48:45
Dernière modification le : vendredi 5 août 2022 - 11:22:27

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Juan Antonio Leon-Prados, Said Ahmaidi, Jose Gonzalez-Jurado, Thierry Weissland. Acute effects of static passive vs contract-relax short-duration stretching on isometric and isokinetic performance in knee muscles: A single-group, pilot study. Isokinetics and Exercise Science, IOS Press, 2018, 26 (4), pp.313-322. ⟨10.3233/IES-184126⟩. ⟨hal-03594541⟩

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