长时间骑自行车时摄入碳水化合物改善了第二天的时间试验性能,并改变了氨基酸度
Matthieu Clauss1, Øyvind Skattebo1, Malin Rasen Dæhli1
1Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, NORWAY.
在强度炼期间摄入碳水化合物可以提高第二天的运动表现,并减少疲劳. 这一策略有助于维持能量水平,并可能减少肌肉蛋白质的分解,以更好地恢复.
科学领域:
- 运动科学 运动科学 运动科学
- 运动生理学 运动生理学
- 营养生物化学 营养生物化学
背景情况:
- 运动期间低碳水化合物可用性可以增加蛋白质降解,可能会损害后续的性能.
- 了解碳水化合物摄入对代谢压力和恢复的影响对运动员至关重要.
研究的目的:
- 为了研究在标准化消耗性运动期间摄入碳水化合物的对蛋白质降解的影响.
- 评估碳水化合物可用性对训练有素骑自行车者的第二天运动表现的影响.
主要方法:
- 七名训练有素的男性骑自行车者进行了两次炼:一个是安慰剂 (PLA),一个是摄入碳水化合物 (CHO).
- 运动包括在68%V̇O2max时骑自行车,然后在90%V̇O2max时进行高强度间隔.
- 通过时间试验 (TT) 评估第二天的表现,监测尿和特定氨基酸水平.
主要成果:
- 摄入碳水化合物维持了血葡萄糖水平,并在运动期间增加了碳水化合物总氧化.
- 在摄入碳水化合物后 (41:49分钟与42:50分钟对比),第二天的计时表现显著改善.
- 氨酸和氨酸的血度在安慰剂中增加,但在碳水化合物摄入时没有增加,这表明蛋白质分解减少.
结论:
- 消耗性炼期间摄入碳水化合物可以促进恢复,并改善第二天的表现.
- 这种改善与降低代谢压力和可能减少蛋白质降解有关,从而保持肌肉功能.
- 涉及碳水化合物摄入的营养策略对于优化运动恢复和表现至关重要.
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