年长的成年人比年轻的成年人更不经济地创造共同的时刻
Brooke Alanis1, Negin Fallah1, Ahan Mistry1
1Department of Kinesiology and Health Education, The University of Texas at Austin, USA.
Journal of applied physiology (Bethesda, Md. : 1985)
|January 17, 2026
概括
年长的成年人表现出较差的行走经济,原因是较不经济的下肢关节运动量产生. 干预措施应针对肌单元生理学,以改善老年人的能量消耗.
科学领域:
- 老年学是一门学科.
- 生物力学 生物力学
- 人体生理学 人体生理学
背景情况:
- 衰老与步行期间代谢能量消耗增加有关,这种现象被称为"更糟糕的步行经济".
- 驱动这种与年龄相关的步行经济下降的精确生理机制尚未完全理解.
- 以前的研究提出了关于老年人联合时刻生产经济学的相互矛盾的证据.
研究的目的:
- 调查老年人是否比年轻人更不经济地产生下肢关节的时刻.
- 为了确定肌肉联合激活的年龄相关差异是否会影响行走经济.
- 阐明步行经济与年龄相关的变化背后的机制.
主要方法:
- 八名老年人 (平均年龄为71.6岁) 和13名年轻人 (平均年龄为23.1岁) 参加.
- 参与者在动力计上产生部和脚时刻周期,有视觉和听觉反.
- 在特定扭矩,频率和工作周期参数的动量生产试验中评估了肌肉协同激活水平.
主要成果:
- 在年轻人和老年人之间没有观察到对抗剂肌肉联合激活的显著差异.
- 年长的成年人在部消耗的代谢能量比年轻的成年人更多,尽管产生较低的时刻幅度.
- 年长的成年人在不不同的时刻生产周期中,在脚上消耗的代谢能量也比年轻的成年人更多.
结论:
- 与年轻人相比,老年人表现出较低的经济性下肢关节运动量产生.
- 这些发现表明,改善老年人行走经济的干预措施应侧重于潜在的肌单元生理学.
- 解决肌性质与年龄相关的变化可能是提高晚年步行经济的关键.
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