年龄和体力活动状态对走下坡道时肌肉协同作用的影响
Laura Nash1, Vincent C K Cheung2, Amitabh Gupta1
1School of Health Sciences, Western Sydney University, Locked Bag 1797, Penrith, Sydney, NSW, 2751, Australia.
European journal of applied physiology
|November 28, 2024
概括
健康的年轻人和老年人在下坡行走时表现出类似的肌肉协同作用. 身体活动和年龄不同地影响肌肉协同作用,影响步行周期的特定阶段.
科学领域:
- 生物力学 生物力学
- 老年学是一门学科.
- 发动机控制器的控制器
背景情况:
- 步行控制和稳定对于移动性至关重要,特别是在老年人中.
- 了解与年龄相关的步态差异对于预防跌倒和保持独立性至关重要.
- 肌肉协同作用,即多个肌肉的协调激活,对于产生像走路这样的复杂运动至关重要.
研究的目的:
- 为了比较年轻和年长的成年人在平面和下坡上的步态控制 (肌肉协同作用) 和稳定性 (稳定性边缘).
- 调查年龄,身体活动水平和肌肉协同作用特征之间的关联.
主要方法:
- 十个健康的年轻人和十个健康的老年人在跑步机上走在各种斜坡 (0°,-4°,-8°) 上.
- 使用非负矩阵因子化提取肌肉协同效应.
- 分析了肌肉协同宽度 (FWHM) 和身体活动/年龄之间的相关性.
主要成果:
- 两个年龄组都表现出类似的肌肉协同作用,四个协同作用解释了超过85%的肌肉活动在斜坡上的变异.
- 身体活动与体重接受期间肌肉协同作用的宽度有关.
- 年龄与推出和脚清除期间肌肉协同作用的宽度有关.
结论:
- 健康的老年人和年轻人保持类似的肌肉协同模式,当走在下坡梯度.
- 独特的肌肉协同作用在行走过程中受到体力活动和年龄的差异影响.
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