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首页> 外文期刊>Journal of strength and conditioning research >Chronic Effects of Static and Dynamic Stretching on Hamstrings Eccentric Strength and Functional Performance: A Randomized Controlled Trial
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Chronic Effects of Static and Dynamic Stretching on Hamstrings Eccentric Strength and Functional Performance: A Randomized Controlled Trial

机译：静态和动态拉伸对腿段偏心强度和功能性能的慢性效应：随机对照试验

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Barbosa, GM, Trajano, GS, Dantas, GAF, Silva, BR, and Vieira, WHB. Chronic effects of static and dynamic stretching on hamstrings eccentric strength and functional performance: A randomized controlled trial.J Strength Cond Res34(7): 2031-2039, 2020-The purpose of this study was to investigate the effect of static or dynamic stretching training program on hamstrings eccentric peak torque and functional performance. Forty-five active healthy men were randomly allocated into 3 groups (n= 15 per group): no stretching (control), static stretching (3 sets of 30 seconds), and dynamic stretching (3 sets of 30 repetitions). Static and dynamic stretching protocols on the hamstring muscles were performed 3 times a week until complete 10 sessions. Isokinetic knee flexor eccentric peak torque (60 degrees center dot s(-1)), triple hop distance, and modified 20-m sprint time were assessed in a random order before and after stretching training. A mixed-design analysis of variance was performed, with an alpha level of 0.05. There was a significant decrease of eccentric peak torque (p <= 0.0001, -15.4 +/- 10.4%, within-group effect size: 1.03) after static stretching training. The static stretching training reduced eccentric torque when compared with no stretching (-7.6 +/- 21.7%, between-group effect size: 0.50) and dynamic stretching (-7.8 +/- 29.8%, between-group effect size: 0.51). Moreover, the reached distance on triple hop test was also reduced after static stretching protocol (p= 0.009, -3.7 +/- 4.1%, within-group effect size: 0.29). These findings suggest that static stretching training is sufficient to produce meaningful reductions on hamstrings eccentric torque and functional performance. Based on the results of this study, caution should be taken when prescribing of static stretching training in isolation when the purpose is to improve performance, and indirectly, to prevent hamstring strain injuries due to its possible negative effects on hopping performance and knee flexor eccentric torque.
机译：Barbosa，GM，Trajano，GS，Dantas，GAF，Silva，BR和Vieira，WHB。静音和动态伸展对腿筋偏心强度和功能性能的慢性效应：随机控制试验。救生率34（7）：202020--本研究的目的是探讨静态或动态伸展训练的影响腿筋偏心峰值扭矩和功能性能的程序。将四十五名活跃的健康男性随机分配成3组（每组n = 15）：无拉伸（控制），静态拉伸（3组30秒），动态拉伸（3组30重复）。腿筋肌肉上的静态和动态拉伸协议每周进行3次，直到完成10个会议。等因速膝关节弯曲偏心峰值扭矩（60度中心点S（-1）），三跳距离，并在拉伸训练之前和之后的随机顺序评估了改性的20-M短跑时间。进行差异的混合设计分析，α水平为0.05。静电拉伸训练后，偏心峰扭矩的显着降低（P <= 0.0001，-15.4 +/--10.4％，效果范围内：1.03）。与无拉伸相比（-7.6 +/- 21.7％相比，静态拉伸训练减少了偏心扭矩（ - 组效果尺寸：0.50）和动态拉伸（-7.8 +/- 29.8％， - 组效果大小：0.51）。此外，在静态拉伸方案后，三跳试验的达到距离也降低了（p = 0.009，-3.7 +/- 4.1％，在组内效果大小：0.29）。这些发现表明，静态拉伸训练足以产生对腿筋偏心扭矩和功能性能的有意义的减少。基于本研究的结果，在分离方面的静态拉伸训练时应谨慎进行，以便在提高性能和间接的情况下，以防止由于其可能对跳跃性能和膝弯曲偏心扭矩的负面影响而导致的腿筋伤害损伤。

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