W Prime:基于证据的建议,为老年女性步行速度的新预测器提出了建议
Gersiel Nascimento de Oliveira Júnior1, Jairo de Freitas Rodrigues de Sousa1, Marcelo Augusto da Silva Carneiro1,2
1Applied Physiology, Nutrition and Exercise Research Group (PhyNER), Exercise Biology Research Laboratory (BioEx), Institute of Health Science, Federal University of Triangulo Mineiro (UFTM), Uberaba 38025-180, MG, Brazil.
Muscles (Basel, Switzerland)
|August 4, 2025
概括
老龄化会降低W prime (W') 和临界扭矩 (CT),影响女性的步行速度. W prime独立地预测了流动性,强调了它对老年人的重要性.
科学领域:
- 运动生理学 运动生理学
- 老年学是一门学科.
- 生物力学 生物力学
背景情况:
- 过度扭矩-持续曲线定义了临界扭矩 (CT) 和W prime (W),区分了运动强度领域.
- W'量化了CT以外的累积工作能力,这对于理解疲劳和表现至关重要.
- 与年龄相关的W,CT和步行速度的下降对老年人群的流动性造成了重大关注.
研究的目的:
- 调查女性的W,CT和步行速度的与年龄相关的变化.
- 为了确定W'和CT是否可以独立于最大肌肉扭矩来预测步行速度.
主要方法:
- 三个年龄组 (成年,中年,老年) 的131名女性参与了这项研究.
- W'和CT的测量是使用最大的同度膝盖延伸器收缩来进行的.
- 步行速度通过10米,400米和6分钟步行测试 (6MWT) 进行评估.
主要成果:
- 随着年龄的增长,步行速度,W'和CT都显著下降 (p < 0.05).
- 无论是W'还是CT,在所有距离上都显示出与步行速度的正相关性.
- 即使在调整最大肌肉扭矩后,W'仍然是步行速度的显著正预测指标 (p < 0.05).
结论:
- 衰老与减少W',CT有关,因此,步行速度减慢.
- 在老年女性中,W'是比CT更强大的步行速度预测器,独立于肌肉力量.
- 这些发现强调了W'对于维持老年妇女的运动能力的重要性.
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