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基质氧化不会影响中距离跑步表现:一个随机控制的交叉试验
Alex Buga1, Jeffrey D Buxton2, Emma Plank2
1Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA.
Nutrients
|September 13, 2025
概括
首选基质氧化不会显著影响中距离跑步表现,即使具有不同的代谢概况. 这项研究挑战了以前关于基板利用决定有氧能力的观念.
科学领域:
- 运动生理学 运动生理学
- 营养科学 营养科学
- 体育表现 体育表现 体育表现
背景情况:
- 最近的研究质疑优先基质氧化在运动表现中的作用.
- 控制葡萄糖和运动引起的低血糖 (EIH) 对于准确的性能评估至关重要.
研究的目的:
- 研究运动前食 (低碳水化合物高脂肪与高碳水化合物低脂肪) 对中距离跑步表现的影响.
- 为了确定偏好的基质氧化是否会影响养状态下的性能.
主要方法:
- 随机交叉研究与休跑步者 (n=30).
- 参与者在食用LCHF或HCLF等热量餐后完成了5K和10K计时试验.
- 测量包括时间试验性能,基质氧化,血液代谢物,心率和感知到的劳动力.
主要成果:
- 与HCLF相比,LCHF食显著改变了基质氧化 (增加脂肪氧化,减少RER).
- 尽管有代谢差异,5K和10K的计时表现在LCHF和HCLF条件之间是相似的.
- LCHF餐增加了腹感,而HCLF餐导致了血糖的上升.
结论:
- 首选的基质氧化不是中距离有氧性能的主要决定因素.
- 这些发现支持了最近的证据,这些证据挑战了对基质利用在性能中的作用的传统观点.
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