Regular stretch does not increase muscle extensibility: a randomized controlled trial
Regular stretch does not increase muscle extensibility: a randomized controlled trial
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DOI：
10.1111/j.1600-0838.2009.00926.x
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发表时间：
2010-02-01
影响因子：
4.1
通讯作者：
Harvey, L. A.
中科院分区：
文献类型：
--
作者：
Ben, M.;Harvey, L. A.
这项随机对照试验的目的是确定是否定期拉伸增加腿筋肌肉伸展性。60名健康人被随机分配到实验组或对照组。实验组参加了监督拉伸会议，他们拉伸随机分配的腿的腿筋肌肉30分钟，每周5次，持续6周。在此期间，对照组没有参加任何拉伸会议。没有参与者退出研究。使用专用器械测量直腿抬高动作期间的被动髋关节屈曲，并施加标准化和非标准化拉伸扭矩。当使用标准化拉伸扭矩测量时，拉伸干预没有增加被动髋关节屈曲[平均治疗效果=-1度; 95%置信区间（CI）=-3至2度]。然而，当在没有标准化拉伸扭矩的情况下测量时，它确实增加了被动髋关节屈曲（平均治疗效果=10度，95% CI=6-14度）。持续六周每天30分钟的拉伸不会增加健康个体的腿筋肌肉的伸展性。然而，它确实提高了拉伸耐力，导致关节活动范围增加，而肌肉伸展性没有任何实际改善。
The purpose of this randomized controlled trial was to determine whether regular stretch increases hamstring muscle extensibility. Sixty healthy individuals were randomly allocated to an experimental or a control group. The experimental group attended supervised stretch sessions where they stretched the hamstring muscles of a randomly allocated leg for 30 min five times a week for 6 weeks. The control group did not attend any stretch sessions during this period. No participants withdrew from the study. A purpose built device was used to measure passive hip flexion during a straight leg-raise manoeuvre with the application of a standardized and non-standardized stretch torque. The stretch intervention did not increase passive hip flexion when measured with a standardized stretch torque [mean treatment effect=-1 degrees; 95% confidence interval (CI)=-3 to 2 degrees]. It did, however, increase passive hip flexion when measured without a standardized stretch torque (mean treatment effect=10 degrees, 95% CI=6-14 degrees). Six weeks of sustained 30-min daily stretch does not increase the extensibility of the hamstring muscle of healthy individuals. It does, however, improve stretch tolerance leading to increased joint range of motion without any actual improvements in muscle extensibility.