在高温运动期间使用无乳糖脱脂牛奶进行自愿补水:探索有效性和耐受性
Luis F Aragón-Vargas1, Julián Camilo Garzón-Mosquera1, Johnny A Montoya-Arroyo1
1Human Movement Science Research Center, University of Costa Rica, San José 11501-2060, Costa Rica.
Nutrients
|July 11, 2023
概括
脱脂无乳糖牛奶在温热中适度运动时有效地补水运动员,表现出比水或不喝水更好的结果. 虽然出现了一些轻微的胃肠道问题,但它仍然存在.
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:
- 在炎热的条件下炼期间有效的补水对于运动表现和健康至关重要.
- 虽然水是常见的,但其他饮料正在探索它们的补水益处.
- 经常建议在运动后使用牛奶,但在运动期间使用牛奶可能会引起胃肠道疾病.
研究的目的:
- 为了比较脱脂无乳糖牛奶 (SM) 与水 (W) 和无饮料 (ND) 在长时间在热中炼时的水分效果.
- 评估在运动期间自愿摄入液体,水分状态以及胃肠道 (GI) 疾病的发生率.
- 为了确定SM是否可以在运动期间安全地用作水分饮料.
主要方法:
- 16名身体活跃的大学生参加了在热环境 (32°C,70%RH) 的90分钟骑自行车运动方案,HRmax为60-75%.
- 参与者被随机分配到三个条件:没有饮料 (ND),水 (W) 或消费的无乳糖脱脂牛奶 (SM).
- 通过体重变化来评估水分状态,并通过问卷记录胃肠道症状.
主要成果:
- 与无乳糖脱脂牛奶 (918.8毫升) 相比,水 (1206.2毫升) 的随意液体摄入量显著更高.
- 脱水水平在没有乳糖的脱脂牛奶条件下明显较低 (-0.07% BM) 与水 (0.28% BM) 和没有饮料 (1.38% BM) 相比.
- 尿液量在水条件下显著增加 (220.4毫升),与没有乳糖的脱脂牛奶 (81.3毫升) 和没有饮料 (86.1毫升) 相比. 报告了轻微的胃肠道症状,如吐和腹痛,但通常很低.
结论:
- 脱脂无乳糖牛奶是适合和有效的水分饮料,适用于在炎热条件下持续90分钟的中等强度运动.
- 尽管与水相比,SM的自愿摄入量略低,并具有较高的轻度GI症状,但它提供了优越的水分.
- 对于运动员来说,SM是一个可行的替代品,他们希望在长时间的运动中在炎热的情况下得到有效的补水.
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