Nutrition and exercise determinants of postexercise glycogen synthesis

Robergs, Robert A. (1991) Nutrition and exercise determinants of postexercise glycogen synthesis. International Journal of Sport Nutrition and Exercise Metabolism, 1(4), pp. 307-337.

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Abstract

During the initial hours of recovery from prolonged exhaustive lower body exercise, muscle glycogen synthesis occurs at rates approximating 1-2 mmol.kg-1 wet wt.hr-1 if no carbohydrate is consumed. When carbohydrate is consumed during the recovery, the maximal rate of glycogen synthesis approximates 7-10 mmol.kg-1 wet wt.hr-1. The rate of post-exercise glycogen synthesis is lower if the magnitude of glycogen degradation is small, if less than 0.7 gm glucose.kg-1 body wt.hr-1 is ingested, when the recovery is active, and when the carbohydrate feeding is delayed. The rate of postexercise glycogen synthesis is not reduced during the initial hours (< 4) after eccentric exercise. For studies evaluating muscle glycogen synthesis in excess of 12 hours of recovery, average rates of glycogen synthesis are below 4 mmol.kg-1 wet wt.hr-1. Glycogen synthesis is known to be impaired for time periods in excess of 24 hours following exercise causing eccentric muscle damage. Following intense exercise resulting in high concentrations of muscle lactate, muscle glycogen synthesis occurs at between 15-25 mmol.kg-1 wet wt.hr-1. These synthesis rates occur without ingested carbohydrate during the recovery period and are maintained when a low intensity active recovery is performed.

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ID Code: 96695
Item Type: Journal Article
Refereed: Yes
Keywords: glycogen; lactic acid; lactic acid derivative, biosynthesis; carbohydrate diet; exercise; human; kinetics; metabolism; muscle; nutrition; physiology; review, Dietary Carbohydrates; Exercise; Glycogen; Human; Kinetics; Lactates; Lactic Acid; Muscles; Nutrition
ISSN: 1526-484X
Divisions: Current > Schools > School of Exercise & Nutrition Sciences
Copyright Owner: Copyright 1991 Human Kinetics Publishers, Inc.
Deposited On: 10 Jul 2016 23:46
Last Modified: 10 Jul 2016 23:46

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