Lewis Nancy L, Brismée Jean-Michel, James C Roger, Sizer Phillip S, Sawyer Steven F
Center for Rehabilitation Research, Texas Tech University Health Sciences Center, Lubbock, Texas 79430, USA.
Arch Phys Med Rehabil. 2009 Mar;90(3):454-62. doi: 10.1016/j.apmr.2008.09.570.
To evaluate the effect of stretching on the parameters of postural sway and on the kinematic variables associated with balance control in women and men.
Mixed repeated measures design with 2 levels.
Research laboratory.
Fifteen women and fifteen men (mean age 23.4+/-2.2).
Two separate sessions of (1) lower extremity stretching and (2) no-stretching, immediately prior to balance testing with simultaneous surface electromyographic (EMG) recordings of muscle responses.
EMG latencies and average amplitudes for 4 lower extremity muscles for the preferred stance limb during computerized dynamic posturography (CDP) tests, specifically the Postural Evoked Response Test, Adaptation Test, Motor Control Test, Sensory Organization Test, and Unilateral Stance Test.
Analyses of variance indicated no significant main effect for stretching and 2 significant main effects for gender for the Motor Control Test (P=.021) and latency of tibialis anterior (P=.009). Analyses of covariance with covariants of height and active knee extension revealed no significant main effect of stretching or of gender on muscles responses or CDP performance.
In both women and men, lower extremity stretching did not significantly affect muscle responses or performance during CDP.
评估拉伸对男性和女性姿势摆动参数以及与平衡控制相关的运动学变量的影响。
具有两个水平的混合重复测量设计。
研究实验室。
15名女性和15名男性（平均年龄23.4±2.2）。
在进行平衡测试并同时记录肌肉反应的表面肌电图（EMG）之前，分别进行两次（1）下肢拉伸和（2）不拉伸的实验。
在计算机动态姿势描记术（CDP）测试期间，对优势站立肢体的4块下肢肌肉进行肌电图潜伏期和平均波幅测量，具体包括姿势诱发反应测试、适应性测试、运动控制测试、感觉组织测试和单腿站立测试。
方差分析表明，对于运动控制测试（P = 0.021）和胫骨前肌潜伏期（P = 0.009），拉伸无显著主效应，性别有2个显著主效应。对身高和主动膝关节伸展协变量进行协方差分析后发现，拉伸或性别对肌肉反应或CDP表现均无显著主效应。
无论男性还是女性，下肢拉伸对CDP期间的肌肉反应或表现均无显著影响。
