在步行速度更快和携带额外的重量时,生成和修改人类运动机电磁场活动
Bridgette A P Damewood1,2, Thomas Sinkjær3, Aiko K Thompson1
1Department of Health Sciences and Research, College of Health Professions, Medical University of South Carolina, Charleston, South Carolina, USA.
Experimental physiology
|March 6, 2025
概括
人类的步行适应速度和负载涉及增加肌肉活动和改变关节运动. 更快的速度和增加的体重独特地影响腿部肌肉和脚机制,表明复杂的神经控制.
科学领域:
- 生物力学 生物力学
- 人类的机动运动.
- 发动机控制器 发动机控制器
背景情况:
- 每天的步行速度和负载各不相同.
- 了解适应对于人类运动研究至关重要.
研究的目的:
- 检查成年人如何适应步行以增加速度和增加体重.
- 研究电肌图 (EMG),H反射,关节运动和地面反应力.
主要方法:
- 参与者以1.0米/秒和1.5米/秒的速度行走,体重增加20.4公斤或不增加20.4公斤.
- 测量了EMG,H反射,关节动力学和地面反应力.
主要成果:
- 走得更快增加了EMG振幅和关节运动范围.
- 举重增加了伸展肌肉活动,极少影响脚/膝盖运动.
- 综合需求对EMG和部/膝盖运动产生了协同效应,但对脚 flexors和脚运动产生了复杂的影响.
结论:
- 只有在承载重量时,机车的H反射会随着速度的增加而增加.
- 复杂的脊柱和脊柱上机制可能会在联合需求下控制脚柔动和脚运动.
关键词:
这是一个H-反射.负载响应的负载响应机车运动 机车运动肌肉的 afferents 肌肉的 afferents 肌肉的 afferents 肌肉的 afferents 肌肉的 afferents 肌肉的 afferents 肌肉的 afferents步行速度的步行速度.更多相关视频
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