Electromyographic analysis of walking in water in healthy humans
Electromyographic analysis of walking in water in healthy humans
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DOI：
10.2114/jpa.23.119
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发表时间：
2004-07-01
期刊：
影响因子：
--
通讯作者：
Iwamoto, Yukihide
中科院分区：
文献类型：
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作者：
Masumoto, Kenji;Takasugi, Shin-ichiro;Iwamoto, Yukihide
这项研究旨在描述和澄清在水中行走时发生的肌肉活动。采用表面肌电图（EMG）评估6名健康受试者（平均年龄23.3+/-1.4岁）在剑突水平的水中（有或没有水流）行走和在陆地上的跑步机上行走时的肌肉活动。在水中的试验使用了在水槽底部有一个跑步机的流磨机。综合肌电图分析定量肌肉活动。为了计算出%MVC，在步态分析之前，我们测量了每块肌肉的最大随意收缩（MVC），从而方便了在水中行走和在陆地上行走时肌肉活动的比较。在有或没有水流的情况下，在水中行走时，每个测试肌肉获得的百分比mvc都被发现低于在陆地上行走时获得的百分比mvc，其心率反应水平与在陆地上行走时相似。此外，在有水流的水中行走时，与在没有水流的水中行走时相比，在有水流的水中行走时的% mvc往往更大。综上所述，本研究表明，与在陆地上行走相比，在水中行走时肌肉活动明显减少，有水流时肌肉活动往往比没有水流时更大，而健康人在水中行走时肌肉活动的幅度相对较小。这些信息对于设计水上运动项目非常重要，可以安全地用于康复和娱乐目的。与在陆地上行走时的肌肉活动相比显著减少，在水中行走时的肌肉活动往往在水流下比在没有水流时更大，而健康人群在水中的肌肉活动幅度相对较小。这些信息对于设计水上运动项目非常重要，可以安全地用于康复和娱乐目的。
This study was designed to describe and clarify muscle activities which occur while walking in water. Surface electromyography (EMG) was used to evaluate muscle activities in six healthy subjects (mean age, 23.3+/-1.4 years) while they walked on a treadmill in water (with or without a water current) immersed to the level of the xiphoid process, and while they walked on a treadmill on dry land. The trials in water utilized the Flowmill which has a treadmill at the base of a water flume. Integrated EMG analysis was conducted for the quantification of muscle activities. In order to calculate the %MVC, the measurement of maximal voluntary contraction (MVC) of each muscle was made before the gait analysis, thus facilitating a comparison of muscle activities while walking in water with those on dry land. The %MVCs obtained from each of the tested muscles while walking in water, both with and without a water current, were all found to be lower than those obtained while walking on dry land at a level of heart rate response similar to that used when walking on dry land. Furthermore, the %MVCs while walking in water with a water current tended to be greater when compared to those while walking in water without a water current. In conclusion, the present study demonstrated that muscle activities while walking in water were significantly decreased when compared to muscle activities while walking on dry land, that muscle activities while walking in water tended to be greater with a water current than without, and that the magnitude of the muscle activity in water was relatively small in healthy humans. This information is important to design water-based exercise programs that can be safely applied for rehabilitative and recreational purposes. significantly decreased when compared to muscle activities while walking on dry land, that muscle activities while walking in water tended to be greater with a water current than without, and that the magnitude of the muscle activity in water was relatively small in healthy humans. This information is important to design water-based exercise programs that can be safely applied for rehabilitative and recreational purposes.