Allison Sarah J, Bailey David M, Folland Jonathan P
School of Sport and Exercise Sciences, Loughborough University, Leicestershire, UK.
J Sports Sci. 2008 Dec;26(14):1489-95. doi: 10.1080/02640410802392715.
The aim of this study was to examine the acute effects of prolonged static stretching (SS) on running economy. Ten male runners (VO2(peak) 60.1 +/- 7.3 ml x kg(-1) x min(-1)) performed 10 min of treadmill running at 70% VO2(peak) before and after SS and no stretching interventions. For the stretching intervention, each leg was stretched unilaterally for 40 s with each of eight different exercises and this was repeated three times. Respiratory gas exchange was measured throughout the running exercise with an automated gas analysis system. On a separate day, participants were tested for sit and reach range of motion, isometric strength and countermovement jump height before and after SS. The oxygen uptake, minute ventilation, energy expenditure, respiratory exchange ratio and heart rate responses to running were unaffected by the stretching intervention. This was despite a significant effect of SS on neuromuscular function (sit and reach range of motion, +2.7 +/- 0.6 cm; isometric strength, -5.6% +/- 3.4%; countermovement jump height -5.5% +/- 3.4%; all P < 0.05). The results suggest that prolonged SS does not influence running economy despite changes in neuromuscular function.
本研究旨在探讨长时间静态拉伸（SS）对跑步经济性的急性影响。十名男性跑步者（最大摄氧量[VO2(peak)]为60.1±7.3毫升·千克⁻¹·分钟⁻¹）在进行SS干预前后以及无拉伸干预的情况下，在跑步机上以70%VO2(peak)的强度进行了10分钟的跑步。对于拉伸干预，每条腿通过八种不同的练习分别进行单侧拉伸40秒，并重复三次。在整个跑步过程中，使用自动气体分析系统测量呼吸气体交换。在另一天，对参与者在SS干预前后进行了坐位体前屈活动范围、等长力量和反向运动跳跃高度测试。拉伸干预对跑步时的摄氧量、分钟通气量、能量消耗、呼吸交换率和心率反应没有影响。尽管SS对神经肌肉功能有显著影响（坐位体前屈活动范围增加2.7±0.6厘米；等长力量下降5.6%±3.4%；反向运动跳跃高度下降5.5%±3.4%；所有P<0.05），但结果表明，尽管神经肌肉功能发生了变化，长时间的SS并不会影响跑步经济性。
