肌肉强度,肌肉耐力和骨肌肉氧化动态之间的关系在坡道增量循环炼过程中
Shinji Nemoto1, Tohru Nakabo2, Naonori Tashiro3
1Department of Physical Therapy, Showa University School of Nursing and Rehabilitation Sciences, 1865 Tokaichiba-cho, Midori-ku, Yokohama, Kanagawa, 226-8555, Japan. shinji4df@nr.showa-u.ac.jp.
Scientific reports
|May 22, 2024
概括
保持中等至高的肌肉强度和耐力可以在运动期间增强骨肌肉氧化动态. 这表明,对于身体能力较强的人来说,活跃肌肉的氧气利用率更好.
科学领域:
- 运动生理学 运动生理学
- 骨肌肉生理学 骨肌肉生理学
- 心血管健康 呼吸系统健康
背景情况:
- 氧气吸收峰值 (VO2) 是跨健康状况的预后的一个关键预测因素.
- 以前的研究将高峰VO2与运动期间更大的肌肉氧和 (SmO2) 降低联系在一起.
- 影响运动期间SmO2动态的骨肌肉特征尚未完全理解.
研究的目的:
- 为了研究肌肉强度,肌肉耐力和骨肌肉氧化动态在活跃的腿部肌肉之间的关系.
- 为了澄清肌肉特征如何影响增量运动期间的SmO2变化.
主要方法:
- 24名健康的年轻人被分为两组:中度至高强度/耐力和较低强度/耐力.
- 用近红外光谱测试进行心肺运动测试,评估了横向巨大的VO2和SmO2峰值变化.
- 一个线性混合效应模型分析了组,运动负载和SmO2变化之间的关系.
主要成果:
- 在SmO2变化上发现了群体和运动负荷之间的显著相互作用.
- 适度至高强度和耐力组的SmO2从休息到40%-100%的峰值VO2下降显著更大.
- 这表明更适合个体的活跃肌肉中氧气利用率提高.
结论:
- 保持中等至高的肌肉力量和耐力对于强大的骨肌肉氧化动态至关重要.
- 运动期间更大的SmO2减少与更高的肌肉力量和耐力有关.
- 这些发现强调了肌肉力量和耐力对运动表现和氧气利用的重要性.
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