在健康的年轻成年人中,同度RPE炼对疲劳,肌肉氧化动态和微血管功能的影响
Minyoung Kwak1, Brian Benitez1, Clara J Mitchinson1
1Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, KY 40502, USA.
Microvascular research
|July 4, 2025
概括
低强度的同位体运动在持续的感知力度下没有改变肌肉氧化动态或微血管功能. 然而,这种运动方案可以通过持续使用氧气来改善有氧新陈代谢.
科学领域:
- 运动生理学 运动生理学
- 肌肉生理学 肌肉生理学
- 运动科学 运动科学 运动科学
背景情况:
- 肌肉疲劳性和氧化动态在运动表现中至关重要.
- 了解持续低强度运动期间的微血管功能是很重要的.
研究的目的:
- 为了研究疲劳性和肌肉氧化 (SmO2) 在等比式前臂曲时,在3.0的恒定的感知力度 (RPE) 评级下.
- 在运动前后使用近红外光谱-血管封闭试验 (NIRS-VOT) 来评估微血管功能.
主要方法:
- 25名健康的成年人在RPE 3进行了同度前臂曲.
- 测量包括扭矩,任务失效时间 (TTF),SmO2动态和NIRS-VOT.
- 在5%的TFT段中分析了SmO2,VOT参数包括脱和再注射率.
主要成果:
- 运动后最大自发同度收缩 (MVIC) 扭矩显著下降.
- 运动初期SmO2的含量下降,但稳定,这表明氧气的可用性得到维持.
- 运动后的NIRS-VOT显示脱和最小SmO2减少,最大SmO2增加,表明微血管反应发生变化.
结论:
- 持续的低强度运动在固定的RPE可能会阻止提高微血管响应所需的缺氧刺激.
- 这种运动方案可能通过持续利用氧气来增强肌肉有氧代谢.
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