在滑动事件期间,手臂加速和质量控制中心的年龄相关差异
Jonathan S Lee-Confer1,2,3,4, Matthew K Lo5, Karen L Troy6
1Department of Physical Therapy, University of Arizona, Tucson, AZ, USA. leeconfer@arizona.edu.
Scientific reports
|May 5, 2025
概括
与年轻人相比,老年人表现出较慢的手臂运动和更大的身体不稳定性在滑动时. 增强手臂加速可能是老年人防摔策略的关键.
科学领域:
- 生物力学 生物力学
- 老年学是一门学科.
- 人类运动科学科学 人类运动科学
背景情况:
- 手臂绑架是滑动扰动期间恢复平衡的关键策略.
- 与年龄相关的运动控制下降可能会影响手臂运动平衡的有效性.
研究的目的:
- 为了比较前面平面手臂动力学及其与质量中心 (CoM) 控制的关系,在年长和年轻的成年人之间诱导滑动时.
- 为了确定与年龄相关的差异,在使用手臂绑架来恢复平衡.
主要方法:
- 11名老年人和11名年轻人在行走时经历了诱导的滑动干扰.
- 测量了前面平面臂动力学 (角度,加速度) 和侧面COM外围.
- 使用统计分析,包括相关性和回归来检查关系.
主要成果:
- 与年轻的成年人相比,老年人的峰值手臂绑架时间显著延迟.
- 较年轻的成年人表现出明显更高的峰臂绑架加速和减少的横向COM外流.
- 手臂绑架加速与侧面的CoM外流负相关,预测了更好的平衡.
结论:
- 年长的成年人在滑动时表现出受损的手臂运动反应,导致CoM稳定性降低.
- 老年人手臂加速减弱可能会损害他们有效恢复平衡的能力.
- 针对手臂运动动态可能是一个可行的策略,用于老年人群的预防跌倒干预措施.
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