在下肢损失的摔倒者中,肌肉功率缺乏
Isabel Lin1, Madelyn Foulk, Kylee Seto
1School of Physical Therapy and Athletic Training, Pacific University, Hillsboro, OR, USA.
Prosthetics and orthotics international
|July 14, 2025
概括
患有下肢损失,经常跌倒的人部肌肉较弱,无法将功率输出适应更快的速度. 高速训练可能会降低跌倒的风险.
科学领域:
- 生物力学 生物力学
- 运动学 运动学
- 康复科学 康复科学 康复科学
背景情况:
- 肌肉力量受损是临床人群中跌倒的已知危险因素.
- 有限的研究存在于下肢损失和高跌倒风险的个体的肌肉功率输出.
研究的目的:
- 为了研究收缩速度对下肢肌肉功率的影响.
- 为了比较三个组的肌肉力量:对照组,非摔倒者,和下肢损失的摔倒者.
主要方法:
- 招募了13名没有下肢损失的成年人和15名下肢损失的成年人.
- 用BiodexTM动力表在60°/s和120°/s下测量了部,膝盖和脚的双边平均功率.
- 利用混合模型ANOVA分析群体和速度对肌肉力量的影响.
主要成果:
- 与非摔倒者相比,下肢损失的摔倒者表现出明显较弱的声音肢体部伸缩/曲肌肉.
- 摔倒者在健全的四肢部和受影响的四肢膝关节肌肉方面比对照者弱;非摔倒者的健全部力量与对照者相似.
- 肌肉力量在控制和非摔倒者中显示出显著的速度效应,但仅在摔倒者的声音膝盖延伸器中.
结论:
- 健全的部肌肉衰弱可能会增加下肢损失的个体的跌倒风险.
- 下肢损失的摔倒者表现出无法将肌肉功率输出调整到更高的速度,与对照组和非摔倒者不同.
- 高速动力训练可能会减轻这一群体的跌倒风险.
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