Effect of the walking speed to the lower limb joint angular displacements, joint moments and ground reaction forces during walking in water
Effect of the walking speed to the lower limb joint angular displacements, joint moments and ground reaction forces during walking in water
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DOI：
10.1080/09638280410001704313
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发表时间：
2004-06-17
影响因子：
2.2
通讯作者：
Akai, M
中科院分区：
文献类型：
--
作者：
Miyoshi, T;Shirota, T;Akai, M
目的：本研究的目的是比较地面反作用力（GRF），关节角位移（JAD），关节力矩（JM）和肌电图（EMG）活动发生在不同的速度在水中和陆地上walking.Method的变化：15名健康成年人参加了这项研究。在水实验中，调整水深，使体重减轻80%。使用视频运动分析系统和防水力平台获得运动学和动力学数据并计算JM。结果表明：（1）水上行走与陆上行走的GRF前后方向图不同，而GRF的内外侧方向图相似;（2）水上行走与陆上行走的髋关节和踝关节的JAD方向图相似，膝关节的活动范围在水中低于在陆地上，（3）在整个站立阶段，三个关节的JM在水中均低于在陆地上，（4）髋关节伸展力矩和髋伸肌肌电活动在水中行走过程中随着行走速度的增加而增加。反射性水上行走运动可以设计为通过全关节运动范围和最小化关节力矩来结合大肌肉活动，特别是下肢伸肌。
Purpose: The purpose of this study was to compare the changes in ground reaction forces (GRF), joint angular displacements (JAD), joint moments (JM) and electromyographic (EMG) activities that occur during walking at various speeds in water and on land.Method: Fifteen healthy adults participated in this study. In the water experiments, the water depth was adjusted so that body weight was reduced by 80%. A video-motion analysis system and waterproof force platform was used to obtain kinematics and kinetics data and to calculate the JMs.Results: Results revealed that (1) the anterior-posterior GRF patterns differed between walking in water and walking on land, whereas the medio-lateral GRF patterns were similar, (2) the JAD patterns of the hip and ankle were similar between water- and land-walking, whereas the range of motion at the knee joint was lower in water than on land, (3) the JMs in all three joints were lower in water than on land throughout the stance phase, and (4) the hip joint extension moment and hip extensor muscle EMG activity were increased as walking speed increase during walking in water.Conclusions: Rehabilitative water-walking exercise could be designed to incorporate large-muscle activities, especially of the lower-limb extensor muscles, through full joint range of motion and minimization of joint moments.