Trunk Muscle Activity During Lumbar Stabilization Exercises on Both a Stable and Unstable Surface
Trunk Muscle Activity During Lumbar Stabilization Exercises on Both a Stable and Unstable Surface
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DOI：
10.2519/jospt.2010.3211
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发表时间：
2010-06-01
影响因子：
6.1
通讯作者：
Shiraki, Hitoshi
中科院分区：
文献类型：
--
作者：
Imai, Atsushi;Kaneoka, Koji;Shiraki, Hitoshi
研究设计：对照实验室研究。目的：阐明表面稳定性的差异是否会影响躯干肌肉的活动。背景：在不稳定的表面上广泛进行腰椎稳定练习。在不稳定的表面进行稳定练习的一个明显优势是有可能增加肌肉需求。然而，文献中几乎没有证据来帮助确定这一假设是否正确。方法：9名健康的男性受试者进行了腰椎稳定练习。用成对的肌内细丝或表面电极记录腹直肌、外斜肌、腹横肌、竖脊肌和腰多裂肌的肌电信号幅度。在地板和不稳定的地面上进行了五种练习：肘趾、手膝、卷曲、侧桥和后桥。将肌电数据归一化为最大自主收缩的百分比，并使用Wilcoxon符号等级检验比较每次在稳定表面和不稳定表面进行运动的数据。结果：肘趾运动使所有肌肉在不稳定表面进行时的活动水平都有所提高。当进行手膝和侧桥练习时，当在不稳定的表面上进行时，更多的全局肌肉的活动水平得到增强。在不稳定的表面上进行卷曲练习，增加了外斜肌的活动，但降低了腹横肌的激活。结论：本研究表明，在不稳定的表面上进行腰椎稳定训练，除背桥运动外，其他运动都能增强躯干肌肉的活动。《矫形外科运动物理杂志》2010；40(6)：369-375。Doi：10.2519/jospt.2010.3211
STUDY DESIGN: Controlled laboratory study.OBJECTIVES: To clarify whether differences in surface stability influence trunk muscle activity.BACKGROUND: Lumbar stabilization exercises on unstable surfaces are performed widely. One perceived advantage in performing stabilization exercises on unstable surfaces is the potential for increased muscular demand. However, there is little evidence in the literature to help establish whether this assumption is correct.METHODS: Nine healthy male subjects performed lumbar stabilization exercises. Pairs of intramuscular fine-wire or surface electrodes were used to record the electromyographic signal amplitude of the rectus abdominis, the external obliques, the transversus abdominis, the erector spinae, and lumbar multifidus. Five exercises were performed on the floor and on an unstable surface: elbow-toe, hand-knee, curl-up, side bridge, and back bridge. The EMG data were normalized as the percentage of the maximum voluntary contraction, and data between doing each exercise on the stable versus unstable surface were compared using a Wilcoxon signed-rank test.RESULTS: With the elbow-toe exercise, the activity level for all muscles was enhanced when performed on the unstable surface. When performing the hand-knee and side bridge exercises, activity level of the more global muscles was enhanced when performed on an unstable surface. Performing the curl-up exercise on an unstable surface, increased the activity of the external obliques but reduced transversus abdominis activation.CONCLUSION: This study indicates that lumbar stabilization exercises on an unstable surface enhanced the activities of trunk muscles, except for the back bridge exercise. J Orthop Sports Phys Ther 2010;40(6):369-375. doi:10.2519/jospt.2010.3211