肌肉氧和动力学与血中最大乳酸盐积累率在不同的冲刺周期持续时间之间的关系
Michael Porter1, Jamie Langley2
1Centre for Physical Activity, and Life Sciences, University of Northampton, Northampton, UK.
European journal of sport science
|February 28, 2025
概括
10秒最大周期测试是确定最大血液乳酸积累率 (vLamax) 的最佳方法. 肌肉氧和 (SmO2) 脱化动力学与vLamax密切相似,验证了这个更短的协议.
科学领域:
- 运动生理学 运动生理学
- 体育科学 运动科学 运动科学
- 生物物理学的生物物理.
背景情况:
- 血中最大乳酸积累率 (vLamax) 是运动员无氧能力的关键指标.
- 准确确定vLamax需要一个优化的测试协议持续时间.
- 肌肉氧和 (SmO2) 监测提供了关于运动期间肌肉氧化动态的见解.
研究的目的:
- 评估肌肉氧和 (SmO2) 动力学与vLamax之间的关系.
- 通过使用不同测试长度 (10,15和30秒) 来验证确定vLamax的最佳测试持续时间.
- 在最大的努力下评估SmO2脱和vLamax之间的相关性.
主要方法:
- 13名训练有素的雄性进行了10秒,15秒和30秒的三个最大周期测试.
- vLamax是从运动后的血中乳酸盐度计算出来的.
- 横向巨的肌肉氧和 (SmO) 连续使用近红外光谱 (MOXY装置) 测量.
主要成果:
- 在10秒的测试中,vLamax (0.83 ± 0.15 mmol·L-1·s-1) 与15秒 (0.67 ± 0.13 mmol·L-1·s-1) 和30秒 (0.43 ± 0.06 mmol·L-1) 的测试相比显著更高.
- 在SmO2脱和vLamax动力学之间发现了一个强大的反向关系 (r = -0.994,p < 0.001).
- 达到SmO2极点 (8.47 ± 1.50s) 的时间与峰值vLamax (∼9s) 的时间紧密相对应.
结论:
- 验证了10秒的测试持续时间是确定vLamax的最佳时间.
- SmO2脱化动力学作为一个可靠的,非侵入性的指标,反映了vLamax.
- 这些发现支持使用SmO2监测来验证运动生理学研究中的vLamax协议.
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