年龄和初始位置会影响坐到走的移动生物力学:下肢肌肉活动和关节时刻
Michael F Miller1, Eline van der Kruk2, Anne K Silverman3
1Department of Mechanical Engineering, Colorado School of Mines, Golden, CO, USA.
Journal of biomechanics
|November 13, 2024
概括
年长的成年人使用不同的策略坐到走的过渡,显示出更大的膝盖延伸时刻和肌肉激活. 脚和手臂的位置显著影响跨年龄组的运动生物力学.
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:
- 坐到走路 (STW) 过渡需要复杂的肌肉协调以保持稳定.
- 与年龄相关的下降可能导致在STW期间进行补偿运动策略.
- 之前的研究往往限制了在性病研究期间脚和手臂位置的变化.
研究的目的:
- 在STW转换期间量化下肢肌肉活动和关节时刻.
- 为了比较年轻人和老年人之间的这些生物力学.
- 调查不同初始脚位和手臂位置对STW的影响.
主要方法:
- 15名年轻人和15名老年人从四个脚位置和两个手臂位置执行了STW.
- 测量的峰值膝关节和脚关节延伸时刻.
- 分析了五个双边下肢肌肉的峰值电肌图 (EMG).
主要成果:
- 年长的成年人表现出更大的膝盖延伸时刻和膝盖延伸肌肉刺激.
- 年轻的成年人表现出更大的脚脚下屈曲时刻.
- 后部偏移和宽脚位置要求更大的关节时刻和肌肉激活.
- 手臂支减少了膝盖延伸肌肉的活动.
- 年龄与脚/手臂位置相互作用,改变生物力学反应.
结论:
- 在STW期间的运动策略在年轻人和老年人之间有很大的差异.
- 最初的脚和手臂位置影响STW生物力学,影响因年龄而异.
- 结果可以为运动评估和个性化的上升指南提供信息.
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