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节奏策略对纯种马对2分钟强度运动的代谢反应的影响
Kenya Takahashi1, Kazutaka Mukai2, Yusaku Ebisuda2
1Department of Sports Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-Ku, Tokyo, 153-8902, Japan. kenyatakahashi@idaten.c.u-tokyo.ac.jp.
Scientific reports
|August 7, 2024
概括
马的积极节奏增加了血乳酸,并比负节奏更大程度上降低了肌肉糖原,这表明了更大的糖分代谢激活. 这会影响运动表现和强度运动期间的疲劳.
科学领域:
- 马的运动生理学
- 骨肌肉的新陈代谢
- 运动科学 运动科学
背景情况:
- 积极的节奏策略可以在持续1-5分钟的运动中提高运动表现.
- 了解肌肉对不同节奏策略的代谢反应对于优化运动表现至关重要.
研究的目的:
- 为了研究和比较纯种马在2分钟的跑步机运行过程中对积极和消极节奏策略的肌肉代谢反应.
- 确定节奏对关键代谢指标 (如血乳酸和肌肉糖原) 的影响.
主要方法:
- 八匹纯血统的马经历了2分钟的跑步机运动测试.
- 采用了两种节奏策略:积极的 (1分钟在110%V̇O2max,1分钟在90%V̇O2max) 和消极的 (1分钟在90%V̇O2max,1分钟在110%V̇O2max).
- 收集了肌肉活检和血液样本,以分析代谢中间体,乳酸和氧气消耗.
主要成果:
- 血乳酸度是显著更高的正节奏与负节奏相比.
- 在积极节奏时,1分钟和2分钟,肌肉糖原水平显著降低.
- 代谢分析表明,糖溶性中间体的增加具有积极的节奏,而三酸循环代谢物显示出最初的增加,随后稳定.
结论:
- 积极的节奏激活糖分分解代谢比负的节奏更强烈,尽管相同的总工作负载.
- 这些发现表明,节奏策略在马的高强度运动中显著影响肌肉能量系统的招募.
- 了解这些代谢差异可以为训练和比赛策略提供信息,以提高马匹的运动表现.
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