氧气摄入的动态与在恒定工作速率运动期间肌肉刺激和总血红蛋白度的急性变化一致
Gabriele Marinari1, Robin Trama1, Alessandro M Zagatto2
1Faculty of Kinesiology, University of Calgary, Calgary, CANADA.
Medicine and science in sports and exercise
|March 6, 2025
概括
骑自行车时的肌肉刺激与氧化水平有关,特定的运动方案影响肌肉活动和氧气吸收动态. 较高的总血红蛋白和髓红蛋白水平可能会减少运动期间的肌肉刺激.
科学领域:
- 运动生理学 运动生理学
- 肌肉生理学 肌肉生理学
- 心血管生理学心血管生理学
背景情况:
- 肌肉刺激和氧气吸收动态对于理解运动反应至关重要.
- 肌肉活动和氧化在常速运动期间的相互作用需要进一步研究.
研究的目的:
- 为了确定在恒定工作速率循环期间的肌肉刺激是否与总血红蛋白和髓红蛋白 ([Hb + Mb]) 水平有关.
- 为了探索肌肉刺激和氧气吸收 (V·O2) 动态之间的相互作用.
主要方法:
- 参与者在重强度领域执行了恒定工作速率 (CWR) 和坡道至恒定工作速率 (rCWR) 的循环协议.
- 肌肉刺激 (EMGRMS),总[Hb + Mb],和脱氧血红蛋白 ([HHb]) 在横向巨大的测量.
- 计算了EMGRMS与总的比率[Hb + Mb]和[HHb].
主要成果:
- 与CWR相比,Ramp-to-constant-work-rate循环导致肌肉刺激较低,总[Hb + Mb]最初较高.
- 肌肉刺激在CWR期间显示出初始超速,但在双CWR中短暂休息后没有.
- 肌肉刺激与总[Hb + Mb]的比率与氧气吸收相关.
结论:
- 提高总[Hb + Mb]的运动方案可以降低肌肉刺激.
- 肌肉刺激,总[Hb + Mb]和运动期间的全身氧气吸收之间存在明显的相互作用.
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