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增加碳水化合物摄入量以应对高强度训练、比赛和恢复的时间及方法。

Timing and method of increased carbohydrate intake to cope with heavy training, competition and recovery.

作者信息

Coyle E F

机构信息

Human Performance Laboratory, University of Texas, Austin 78712.

出版信息

J Sports Sci. 1991 Summer;9 Spec No:29-51; discussion 51-2. doi: 10.1080/02640419108729865.

Abstract

Based upon the fact that fatigue during intense prolonged exercise is commonly due to depletion of muscle and liver glycogen which limits both training and competitive performance, this paper has proposed extraordinary dietary practices which generally advocate high carbohydrate intake at all times before, during and after exercise. The simple goal is to have as much carbohydrate in the body as possible during the latter stages of prolonged intense exercise when the ability for intense exercise usually becomes limiting to performance. This theory is put into practice by recommending that carbohydrate intake after exhaustive exercise should average 50 g per 2 h of mostly moderate and high glycaemic carbohydrate foods. The aim should be to ingest a total of about 600 g in 24 h. Carbohydrate intake should not be avoided during the 4 h period before exercise and in fact it is best to eat at least 200 g during this time. When possible, carbohydrate should be ingested during exercise, generally in the form of solutions containing glucose/sucrose/maltodextrins, at a rate of 30-60 g h-1. Emphasis has been placed upon eating the optimal amount and best type of carbohydrate at the proper times because these practices demand a large amount of food. When diet is not carefully planned according to these guidelines, endurance athletes tend to consume too little carbohydrate because they become satiated with high fat in their diet and they go through periods in the day when recovery of glycogen stores is suboptimal and thus precious time is wasted.

摘要

基于长时间剧烈运动中的疲劳通常是由于肌肉和肝糖原耗尽,这会限制训练和比赛表现这一事实,本文提出了特殊的饮食习惯,通常提倡在运动前、运动中和运动后始终摄入高碳水化合物。简单的目标是在长时间剧烈运动的后期,当剧烈运动能力通常成为表现的限制因素时,让体内有尽可能多的碳水化合物。该理论通过建议力竭运动后碳水化合物摄入量平均每2小时50克,主要是中高血糖指数的碳水化合物食物来付诸实践。目标应该是在24小时内总共摄入约600克。运动前4小时不应避免碳水化合物摄入,事实上在此期间最好至少摄入200克。如果可能,运动期间应摄入碳水化合物,通常以含有葡萄糖/蔗糖/麦芽糊精的溶液形式,速率为30 - 60克/小时。重点在于在适当的时间摄入最佳量和最佳类型的碳水化合物,因为这些做法需要大量食物。当饮食未根据这些指导方针精心规划时,耐力运动员往往碳水化合物摄入量过少,因为他们饮食中高脂肪会让他们有饱腹感,而且一天中会有糖原储备恢复不理想的时期,从而浪费了宝贵的时间。

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