评估乳酸积累的最大速率和在循环中估计的最大乳酸稳定状态
Mattice Sablain1, Billy Sperlich2, Benedikt Meixner2,3,4
1Department of Movement and Sports Sciences, Ghent University, Watersportlaan 2, 9000, Ghent, Belgium.
European journal of applied physiology
|May 8, 2025
概括
血中乳酸积累的最大速度 (VLa_max) 和在最大乳酸稳定状态下计算的功率 (cP-MLSS) 显示出良好的可靠性. 虽然cP-MLSS与专家确定的乳酸值 (LT2-专家) 非常相似,但需要进一步研究才能在培训中应用.
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
- 生物化学 生化学
背景情况:
- 运动期间的乳酸积累是关键的生理指标.
- 最大乳酸稳定状态 (MLSS) 和相关的功率输出对于训练处方至关重要.
- 确定这些参数的现有方法在可靠性和适用性方面各不相同.
研究的目的:
- 为了评估血中乳酸积累的最大速率 (VLa_max) 的可靠性.
- 在最大乳酸稳定状态下 (cP-MLSS) 评估计算输出功率的可靠性.
- 将cP-MLSS与专家确定的第二乳酸值 (LT2-专家) 进行比较.
主要方法:
- 13名身体活跃的男性进行了增量运动测试,以确定VO2max和LT2专家.
- 使用四个单独的15秒异动力学冲刺测试来测量VLa_max.
- 使用数学模型计算cP-MLSS,其中包括VLa_max,VO2max和体重.
主要成果:
- VLa_max显示出良好的可靠性 (ICC = 0.80).
- cP-MLSS表现出卓越的可靠性 (ICC = 0.99). 在此过程中,cP-MLSS表现出极好的可靠性.
- cP-MLSS (282 ± 43 W) 与LT2-expert (277 ± 41 W) 并没有显著差异,但显示了广泛的一致范围 (-39 到 29 W).
结论:
- 在身体活跃的男性中,VLa_max和cP-MLSS是可靠的措施.
- 虽然cP-MLSS显示出前景,但其临床和培训应用需要进一步验证,因为与LT2-expert相比观察到的变化.
- 建议对cP-MLSS模型进行改进,以便在性能和培训环境中实际使用.
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