碳水化合物-蛋白质补充剂的U形剂量反应对划船性能的影响
Xiangyu Wang1,2, Hao Wu2
1Department of Physical Education, Capital Normal University, Beijing, China.
Frontiers in nutrition
|November 10, 2025
概括
对于长时间的划船,较低剂量的碳水化合物和蛋白质补充剂 (CHO-PRO) 比较高剂量更有效. 超过一定的摄入门可能会损害耐力表现,强调剂量优化的重要性.
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
- 营养科学 营养科学
背景情况:
- 同时摄入碳水化合物和蛋白质补充剂 (CHO-PRO) 是常见的,以提高耐力.
- 对于性能而言最佳的CHO-PRO剂量尚未确立,限制了营养指南.
- 这项研究调查了长时间划船期间4:1CHO-PRO的剂量反应关系.
研究的目的:
- 描述长时间划船期间4:1 CHO-PRO的性能剂量反应曲线.
- 为了确定CHO-PRO对耐力表现的最佳摄入水平.
- 为了确定与较高CHO-PRO剂量相关的潜在性能下降.
主要方法:
- 一个随机的,双盲的平行组试验,涉及171名男性大学生.
- 参与者在划船协议期间消耗了八种不同的4:1CHO-PRO剂量之一.
- 碳水化合物输送率从0.5到1.2g/kg/h不等,划船距离是主要的结果.
主要成果:
- 对于划船性能,观察到一个显著的U形 (正方形) 剂量反应关系.
- 最低的CHO-PRO剂量 (0.5克/公斤/小时CHO) 产生明显更大的划船距离比较高的剂量 (0.9-1.2克/公斤/小时).
- 在不同剂量之间,在生理标志物 (心率,血乳酸,葡萄糖) 或感知到的劳动力中没有发现显著的差异.
结论:
- 4:1 CHO-PRO的较低剂量对长时间的划船性能比较有效,而不是较高剂量.
- 显而易见的是非线性表现反应,在更高的摄入水平下降.
- 优化CHO-PRO剂量至关重要,因为超过摄入门可能会损害耐力表现.
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