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运动后碳水化合物和蛋白质的共同摄入对肌肉糖原的恢复和功能能力的影响。

Restoration of Muscle Glycogen and Functional Capacity: Role of Post-Exercise Carbohydrate and Protein Co-Ingestion.

机构信息

College of Medical Rehabilitation, Qassim University, Buraidah 51451, Saudi Arabia.

Human Physiology Research Group, Department for Health, University of Bath, Bath BA2 7AY, UK.

出版信息

Nutrients. 2018 Feb 23;10(2):253. doi: 10.3390/nu10020253.

Abstract

The importance of post-exercise recovery nutrition has been well described in recent years, leading to its incorporation as an integral part of training regimes in both athletes and active individuals. Muscle glycogen depletion during an initial prolonged exercise bout is a main factor in the onset of fatigue and so the replenishment of glycogen stores may be important for recovery of functional capacity. Nevertheless, nutritional considerations for optimal short-term (3-6 h) recovery remain incompletely elucidated, particularly surrounding the precise amount of specific types of nutrients required. Current nutritional guidelines to maximise muscle glycogen availability within limited recovery are provided under the assumption that similar fatigue mechanisms (i.e., muscle glycogen depletion) are involved during a repeated exercise bout. Indeed, recent data support the notion that muscle glycogen availability is a determinant of subsequent endurance capacity following limited recovery. Thus, carbohydrate ingestion can be utilised to influence the restoration of endurance capacity following exhaustive exercise. One strategy with the potential to accelerate muscle glycogen resynthesis and/or functional capacity beyond merely ingesting adequate carbohydrate is the co-ingestion of added protein. While numerous studies have been instigated, a consensus that is related to the influence of carbohydrate-protein ingestion in maximising muscle glycogen during short-term recovery and repeated exercise capacity has not been established. When considered collectively, carbohydrate intake during limited recovery appears to primarily determine muscle glycogen resynthesis and repeated exercise capacity. Thus, when the goal is to optimise repeated exercise capacity following short-term recovery, ingesting carbohydrate at an amount of ≥1.2 g kg body mass·h can maximise muscle glycogen repletion. The addition of protein to carbohydrate during post-exercise recovery may be beneficial under circumstances when carbohydrate ingestion is sub-optimal (≤0.8 g kg body mass·h) for effective restoration of muscle glycogen and repeated exercise capacity.

摘要

近年来,运动后恢复营养的重要性已经得到了很好的描述,这导致它被纳入运动员和积极个体的训练计划的一个组成部分。在最初的长时间运动过程中,肌肉糖原的消耗是疲劳发生的主要因素,因此,糖原储存的补充对于恢复功能能力可能很重要。然而,对于最佳短期(3-6 小时)恢复的营养考虑仍然不完全清楚,特别是在需要特定类型营养素的确切数量方面。目前的营养指南旨在在有限的恢复时间内最大限度地提高肌肉糖原的可用性,其假设是在重复运动过程中涉及类似的疲劳机制(即肌肉糖原耗竭)。事实上,最近的数据支持这样一种观点,即肌肉糖原的可用性是有限恢复后随后耐力能力的决定因素。因此,碳水化合物的摄入可以用来影响在剧烈运动后恢复耐力的能力。一种有潜力在仅摄入足够的碳水化合物之外加速肌肉糖原合成和/或功能能力的策略是同时摄入额外的蛋白质。虽然已经进行了许多研究,但在最大限度地提高短期恢复和重复运动能力期间的肌肉糖原方面,关于碳水化合物-蛋白质摄入的影响的共识尚未建立。当从整体上考虑时,在有限的恢复期间摄入碳水化合物似乎主要决定肌肉糖原的合成和重复运动能力。因此,当目标是优化短期恢复后的重复运动能力时,摄入 1.2 克/公斤体重·小时以上的碳水化合物可以最大限度地补充肌肉糖原。在碳水化合物摄入不足以有效恢复肌肉糖原和重复运动能力的情况下(≤0.8 克/公斤体重·小时),在运动后恢复期间将蛋白质添加到碳水化合物中可能是有益的。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/07e8/5852829/beec1fc5a005/nutrients-10-00253-g001.jpg

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