在分级最大运动期间肌肉氧和的时间变化
Lluc Montull1, Natàlia Balagué2, Monika Petelczyc3
1Complex Systems in Sport Research Group, National Institute of Physical Education of Catalonia (INEFC), University of Lleida, La Seu d'Urgell, Spain.
European journal of applied physiology
|July 21, 2025
概括
在强度炼期间,肌肉氧和度的可变性发生显著变化,这表明随着疲劳的出现,氧气运输效率下降. 这种微观测量为运动强度和生理网络提供了新的见解.
科学领域:
- 运动生理学 运动生理学
- 生物医学工程 生物医学工程
- 肌肉的新陈代谢
背景情况:
- 生理和动力学变量显示运动工作负荷和疲劳效应.
- 微观变量,如肌肉氧和度,反映肌肉新陈代谢动态,在时间变化分析中未得到充分研究.
- 评估运动强度和疲劳需要敏感的微观测量.
研究的目的:
- 为了比较组织和指数 (TSI) 的时间变化结构,在分级最大运动期间,直到疲.
- 研究微观变量的灵敏度,反映运动强度和疲劳.
- 探索肌肉氧和时间变量的潜力,以进行运动评估.
主要方法:
- 十九名参与者接受了一项分级的最大跑步炼方案,速度随着增加而增加.
- 从四头骨上分析了TSI的时间变化,使用确定波动分析 (DFA) 和样本 (SampEn).
- 分析的重点是运动测试的初始和最终的2048个数据点 (204个).
主要成果:
- 观察到赫斯特 (H) 指数显著下降 (0.84到0.49,p<0.01).
- 发现样本 (SampEn) 的相应显著增加 (1.12到1.40,p<0.01).
- 这些变化表明,随着疲劳的临近,人们正在转向无关联的白噪声动态.
结论:
- 肌肉氧和时间变量是评估运动强度的一个有希望的指标.
- 这些发现表明,随着工作负载的增加,氧气运输的有效性降低了.
- 微观变量分析可以补充在运动期间研究生理网络的宏观和中观方法.
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