Shoulder muscle EMG activity during push up variations on and off a Swiss ball.
Shoulder muscle EMG activity during push up variations on and off a Swiss ball.
复制标题
DOI：
10.1186/1476-5918-5-7
复制
发表时间：
2006-06-09
期刊：
影响因子：
--
通讯作者：
Fluter, Mark
中科院分区：
文献类型：
--
作者：
Lehman, Gregory J;MacMillan, Brandon;Fluter, Mark
背景技术背景：表面不稳定性是传统康复和力量练习的常见补充，目的是增加肌肉活动，增加运动难度和改善关节本体感觉。本研究的目的是确定是否执行上半身封闭的动力链练习不稳定的表面（瑞士球）的影响肌电振幅相比，一个稳定的surface.METHODS：13名男性被招募从一个方便的样本的大学生。记录三头肌、胸大肌、背阔肌、腹直肌和腹外斜肌的表面肌电图，同时将脚或手放在长凳上和分别放在瑞士球上进行俯卧撑练习。一个俯卧撑加运动也进行了评估，双手上的支持surface.Results和讨论：并不是所有的肌肉反应与肌肉活动的增加。胸大肌不受表面稳定性的影响。三头肌和腹直肌的肌肉活动增加，只有当手在不稳定的表面。外斜肌仅受表面稳定性的影响。没有肌肉表现出变化的激活水平时，腿支持的瑞士球，而不是benchant.CONCLUSION：肌肉活动可以受到影响的表面不稳定性，但增加肌肉活动并不影响所有的肌肉在所有条件下。参与者的质心、不稳定表面的位置和接触瑞士球的身体部位之间的关系可能是确定表面稳定性变化后肌肉激活变化的重要因素。
BACKGROUND: Surface instability is a common addition to traditional rehabilitation and strength exercises with the aim of increasing muscle activity, increasing exercise difficulty and improving joint proprioception. The aim of the current study was to determine if performing upper body closed kinetic chain exercises on a labile surface (Swiss ball) influences myoelectric amplitude when compared with a stable surface.METHODS: Thirteen males were recruited from a convenience sample of college students. Surface electromyograms were recorded from the triceps, pectoralis major, latissimus dorsi, rectus abdominis and external oblique while performing push up exercises with the feet or hands placed on a bench and separately on a Swiss ball. A push up plus exercise was also evaluated with hands on the support surface.RESULTS AND DISCUSSION: Not all muscles responded with an increase in muscle activity. The pectoralis major muscle was not influenced by surface stability. The triceps and rectus abdominis muscles showed increases in muscle activity only when the hands were on the unstable surface. The external oblique muscle was only influenced by surface stability during the performance of the push up plus exercise. No muscle showed a change in activation level when the legs were supported by the Swiss ball instead of the bench.CONCLUSION: Muscle activity can be influenced by the addition of surface instability however an increase in muscle activity does not influence all muscles in all conditions. The relationship between the participant's center of mass, the location of the unstable surface and the body part contacting the Swiss ball may be important factors in determining the muscle activation changes following changes in surface stability.