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老化中的肌肉激活的自主控制:对平衡和跌倒风险的影响

Łukasz Oleksy^1,2,3, Anna Mika⁴, Martyna Sopa⁵

¹Department of Orthopedics, Traumatology and Hand Surgery, Faculty of Medicine, Wroclaw Medical University, 50-556 Wroclaw, Poland.

|June 26, 2025

概括

老年人表现出意图和实际肌肉激活之间的显著差异,可能会影响平衡并增加跌倒风险. 这项研究强调了老年人对运动单元招聘感知的缺陷.

科学领域:

老年学是一门学科.
生物力学生物力学
发动机控制器的控制器

背景情况:

衰老与神经肌肉功能的变化有关.
在老年人中评估运动单元招募精度对于理解功能衰退至关重要.
肌肉激活的差异可能导致老年人跌倒风险增加.

研究的目的:

调查老年女性的预期和实际运动单元招聘之间的差异.
为了确定这些差异是否会影响肌肉激活质量和跌倒风险.
分析肌肉激活感知与平衡控制之间的关系.

主要方法:

48名身体活跃的老年女性 (65±6岁) 接受了广侧 (VLO) 和广中 (VMO) 肌肉的同位测试.
电肌图 (EMG) 在亚最大自发收缩 (15%,30%,60% MVC) 期间记录了肌肉活动.
使用稳定计平台评估平衡,将摇摆面积与VLO肌肉活动相关联.

主要成果:

在所有力值中观察到预期和实际生物电活动 (EMG) 之间的显著偏差.
肌肉激活不超过10%的MVC,并且在15%和60%的MVC之间存在显著差异.
在平衡摇摆区域和非主导的VLO肌肉活动之间发现了显著的相关性.

结论:

老年人表现出肌肉激活感知上的缺陷,导致不准确的运动单元招募.
这些差异可能会损害功能任务的性能,并增加跌倒的风险.
有针对性的干预措施可以改善肌肉激活控制,减少老年人群中跌倒的发生率.

关键词:

这是一个平衡的平衡,平衡的平衡.生物电活动 (EMG)年长的成年人老年人.跌倒的风险跌倒的风险自己的感觉 (proprioception),就是感觉.

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