在最大自行车冲刺期间血液中乳酸的积累及其与冲刺性能特征的关系
Ralf Haase1, Anna Katharina Dunst2, Nico Nitzsche3
1Department of Sports Medicine and Exercise Therapy, Institute of Human Movement Science and Health, Chemnitz University of Technology, Thüringer Weg 11, 09126, Chemnitz, Germany. ralf.haase@hsw.tu-chemnitz.de.
European journal of applied physiology
|March 20, 2025
概括
在强度炼期间,血液中乳酸积累 (ΔBLC) 与表现有关. 使用体重规范化指标,如maxΔP和Pmean,而不是绝对值,可以提高无氧性能评估的准确性.
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
- 生物化学 生物化学
背景情况:
- 血中乳酸积累 (ΔBLC) 是厌氧性能的一个关键指标.
- ΔBLC 和冲刺表现之间的不一致的相关性表明当前评估方法存在问题.
- 绝对性能指标可能不准确地反映代谢反应.
研究的目的:
- 为了研究 ΔBLC 与骑自行车冲刺表现之间的关系.
- 确定是否将性能指标与体重规范化对于准确的无氧评估至关重要.
- 确定最可靠的指标来评估高强度运动期间的糖溶性激活.
主要方法:
- 22名训练有素的男性运动员完成了10秒最大的异动力学自行车冲刺.
- 测量了输出功率和节奏,以计算峰值功率 (Pike),平均功率 (Pmean) 和最大功率增加 (maxΔP).
- 血中乳酸盐度 (BLC) 在运动前和运动后测量,以计算 ΔBLC;统计分析包括相关性和回归.
主要成果:
- ΔBLC与体重正常化最大ΔP (r=0.78),Pmean (r=0.70) 和Ppeak (r=0.65) 显著相关.
- 在 ΔBLC 和绝对性能指标之间没有发现显著的相关性.
- 调整后的maxΔP和Pmean被确定为DBLC最强的预测因素 (调整后的R2=0.648).
结论:
- 相对的,体重调整的自行车指标 (maxΔP,Pmean) 与 ΔBLC 有很强的关联.
- 使用相对指标可以提高无氧性能评估的精度.
- 相对指标可以改善训练监测和在高强度运动中识别人才.
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