休跑者的耐力:90分钟的低强度运动对乳酸值的跑步速度的影响
Olli-Pekka Nuuttila1,2, Vesa Laatikainen-Raussi3, Krista Vohlakari3
1Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland. olli-pekka.s.nuuttila@jyu.fi.
European journal of applied physiology
|October 9, 2024
概括
长时间的低强度运动 (LIT90) 在男性和女性跑步者中显著降低了乳酸值速度 (LT1v). 抑止波动分析α1 (DFA-a1) 作为运动耐久性的潜在会内标记物出现.
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
- 人类表现的人类表现.
背景情况:
- 耐力表现可能会受到抵抗生理恶化的能力的影响.
- 了解疲劳机制和基于性别的差异对于优化训练至关重要.
研究的目的:
- 为了确定长时间的低强度运动 (LIT90) 是否会改变乳酸值速度 (LT1v).
- 为了研究 LT1v.在疲劳诱导的变化中的潜在的性别差异.
主要方法:
- 休跑者 (n=31,15名女性) 接受了增量跑步机测试和90分钟的低强度运动 (LIT90) 在他们的第一个乳酸值速度 (LT1v) 的90%时.
- 在LIT90之前和之后,使用亚最大值测试 (SubmaxLT) 评估了LT1v.
- 呼吸道气体,心率 (HR) 和HR衍生的分离波动分析α1 (DFA-a1) 在LIT90.90期间被监测.
主要成果:
- 在女性 (-5.8%) 和男性 (-5.3%) 中,LIT90显著降低了LT1v,性别之间有可比变化.
- 心率在LIT90期间在两性同样增加,而能量消耗仅在女性中增加.
- 在LIT90期间的DFA-a1变化是相对LT1v变化 (r=0.463,p=0.013) 的唯一显著相关值.
结论:
- 长时间的低强度运动在男性和女性中诱导LT1v的可比降低.
- DFA-a1显示出作为耐力运动期间生理耐久性的会话内生物标志物的潜力.
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