跑步速度和低毒性暴露对Vastus Lateralis肌肉氧化的影响 肌肉氧化
Ming Wei Yeap1, Tze Chien Loh2, Mee Chee Chong3
1Division of Research and Innovation, National Sports Institute of Malaysia, Kuala Lumpur, Malaysia.
International journal of sports physiology and performance
|September 4, 2024
概括
在高和严重的缺氧中以较慢的速度运行显著降低了巨大的横向肌肉氧化. 近红外光谱有效地测量这些变化,表明内部训练负载.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 生物医学工程 生物医学工程
背景情况:
- 肌肉氧化对于耐力表现至关重要.
- 缺氧和跑步速度是影响肌肉氧和度的关键因素.
- 了解这些相互作用有助于优化培训协议.
研究的目的:
- 为了研究如何运行速度和缺氧条件影响巨大的横向肌肉氧化.
- 在不同的条件下分析组织和指数 (TSI) 的变化.
- 评估 TSI 的敏感性,作为内部培训负载的指标.
主要方法:
- 11名训练有素的男性跑步者完成了随机的跑步机跑步,速度从8到20公里/小时.
- 测试了四种条件:正常氧和三种水平的低氧 (中度,高,严重).
- 近红外光谱连续测量了巨大的横向肌肉氧化率 (TSI).
主要成果:
- 对于 ΔTSI% (P < .001) 发现了速度和缺氧状态之间的显著相互作用.
- 较低的速度 (8-12公里·小时-1) 显示在高和严重的缺氧中肌肉氧化减少,与normoxia相比.
- 肌肉氧化率下降 (ΔTSI%) 随着跑步速度逐渐增加,不论缺氧的严重程度如何.
结论:
- 慢慢的跑步速度与高/严重的缺氧相结合,会降低巨大的侧面肌肉氧化.
- 肌肉 ΔTSI% 是一个敏感的指标,这表明近红外光谱可以作为在跑步时内部负荷的参考.
- 这凸显了在训练中考虑速度和环境条件的重要性.
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