肌肉和度和乳酸值之间的一致性:世界级北欧滑雪运动员的肌肉比较和性别差异
Jonas Forot1,2,3, Forrest Schorderet1, Cyril Burdet3
1Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland.
Experimental physiology
|February 12, 2026
概括
近红外光谱 (NIRS) 可以准确检测精英北欧滑雪运动员的第二个乳酸值 (LT2). 这种非侵入性方法的最佳NIRS位置是在双臂肌和双腿肌肌上.
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
- 生物医学工程 生物医学工程
背景情况:
- 近红外光谱 (NIRS) 是一种测量肌肉氧化的非侵入性技术.
- 确定乳酸值 (LT) 对于优化耐力训练至关重要.
- 在北欧滑雪中,最佳的NIRS传感器放置用于LT测定并未得到充分确立.
研究的目的:
- 评估NIRS在识别等于乳酸值 (LT1,LT2) 的断点 (BP1,BP2) 的准确性.
- 为了比较不同肌肉部位的NIRS性能 (大侧肌,双腿肌,双臂肌,三臂肌).
- 评估NIRS在精英男性和女性北欧滑雪运动员中的可行性.
主要方法:
- 52名精英北欧滑雪运动员进行了增量滚球滑雪跑步机测试.
- 在VL,BF,BB和TB上,NIRS传感器监测肌肉氧和度 (SmO2).
- 从NIRS获得的断点 (BP1,BP2) 与实验室确定的乳酸值 (LT1,LT2) 进行了比较.
主要成果:
- 检测BP1是不可靠的,限制了它的实际应用.
- 高血压2精确地检测到横向巨 (88.5%),大腿两 (96.2%) 和大腿两 (86.5%),但没有三脚两 (24.1%).
- 在VL,BF和BB中观察到BP2与LT2的高精度,心率偏差最小.
结论:
- NIRS是一种可行的非侵入性工具,用于检测精英北欧滑雪运动员的第二乳酸值 (LT2).
- 双臂和双腿是推用于基于NIRS的LT2测定的肌肉部位.
- 对于LT2检测的NIRS性能在这个队列中没有显著的基于性别的差异.
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