运动强度对巨大的横向的运动后氧气消耗的影响
Rian Q Landers-Ramos1, Nicolas D Knuth1, Thomas Silva1
1Department of Kinesiology, Towson University, Towson, Maryland, United States.
Journal of applied physiology (Bethesda, Md. : 1985)
|October 17, 2025
概括
运动后的肌肉氧气消耗 (mV·o2) 在骑自行车后至少保持15分钟的升高,表明肌肉新陈代谢的延长. 近红外光谱 (NIRS) 有效地测量了这种运动后的肌肉氧气使用.
科学领域:
- 运动生理学 运动生理学
- 肌肉新陈代谢 肌肉新陈代谢
- 生物医学工程 生物医学工程
背景情况:
- 了解运动后肌肉氧气消耗 (mV·o2) 对于评估运动反应和恢复至关重要.
- 近红外光谱 (NIRS) 提供了一种非侵入性方法来评估肌肉氧化状态.
研究的目的:
- 在不同强度的运动后,使用NIRS测量广侧面肌肉的运动后mV̇o2.
- 评估基于NIRS的mV·o2作为肌肉新陈代谢指标的有用性.
主要方法:
- 20名健康的成年人接受了NIRS测量,测量了巨大的横向.
- 休息时的mV·o2用袖口膨胀来确定;运动后的mV·o2在神经肌肉电刺激 (NMES) 和最大/次最大循环后进行评估.
- 肌肉的氧气消耗是从NIRS衍生的氧化和脱氧血红蛋白差异 (Hb_diff) 的脱度斜率计算出来的.
主要成果:
- 在NMES后的mV·o2是休息水平的1.8倍.
- 与休息相比,循环后的mV·o2显著增加 (最大后4.2倍,亚最大后2.7倍),持续在运动后15分钟.
- 在最大和次最大循环后观察到血中乳酸盐水平升高.
结论:
- 基于NIRS的mV·o2测量显示,自行车运动后至少15分钟,肌肉代谢持续升高.
- 更高的运动强度导致更大的运动后肌肉氧气消耗,即使与相当的总工作.
- 经NIRS评估的运动后肌肉代谢显示出在训练和康复监测中的应用潜力.
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