在中度到重度强度过渡时的功率输出在长时间的运动中以非线性方式下降
Gabriele Gallo1,2, Emanuela Luisa Faelli3, Piero Ruggeri4
1Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand.
European journal of applied physiology
|March 14, 2024
概括
这项研究表明,在长时间的运动中,在中度到重度强度过渡时保持功率输出的能力是非线性的,并且与脂肪氧化率有关,这会影响整体运动能力.
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
- 代谢研究研究 代谢研究
背景情况:
- 在长时间炼期间维持功率输出对于运动表现至关重要.
- 适度和重度运动强度之间的过渡是耐力能力的关键决定因素.
- 了解影响这种转变的因素对于优化培训和绩效至关重要.
研究的目的:
- 为了描述在持续炼期间中度至重度强度过渡时功率输出下降的时间过程.
- 为了检查这种过渡的持久性和个体的运动能力之间的关系.
- 为了确定与中度至重度强度过渡的持久性相关的生理因素.
主要方法:
- 十二名训练有素的骑自行车者接受了详尽的骑自行车协议,交替进行增量测试,以确定第一个通风门 (VT1).
- 在90%的VT1输出功率下进行了长时间的炼.
- 模拟了VT1输出功率下降的时间进程,并估计了5% (Δ5%VT1) 的减少时间.
主要成果:
- 大多数参与者在VT1的输出功率表现出非线性 (二次多项式) 的下降.
- 任务失败的时间与 Δ5%VT1.1 有显著的相关性.
- 任务失败的时间和Δ5%VT1都与增量运动期间的脂肪氧化率有很强的相关性.
结论:
- 在长时间的运动中,在中度到重度强度过渡时,输出功率的下降遵循非线性模式.
- 这种过渡的持久性是决定长期炼能力的一个重要因素.
- 提高脂肪氧化率似乎是改善耐久性的关键生理相关因子,在这种运动强度过渡时.
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