Acute effects of chocolate milk and a commercial recovery beverage on postexercise recovery indices and endurance cycling performance

Document Type

Article

Department or Administrative Unit

Nutrition Exercise and Health Sciences

Publication Date

11-13-2009

Abstract

To maximize training quality, athletes have sought nutritional supplements that optimize recovery. This study compared chocolate milk (CHOC) with a carbohydrate replacement beverage (CRB) as a recovery aid after intense exercise, regarding performance and muscle damage markers in trained cyclists. Ten regional-level cyclists and triathletes (maximal oxygen uptake 55.2 7.2mLkg1min1) completed a high-intensity intermittent exercise protocol, then 1518h later performed a performance trial at 85% of maximal oxygen uptake to exhaustion. Participants consumed 1.0 g carbohydratekg1h1 of a randomly assigned isocaloric beverage (CHOC or CRB) after the first high-intensity intermittent exercise session. The same protocol was repeated 1 week later with the other beverage. A 1-way repeated measures analysis of variance revealed no significant difference (p = 0.91) between trials for time to exhaustion at 85% of maximal oxygen uptake (CHOC 13 10.2min, CRB 13.5 8.9min). The change in creatine kinase (CK) was significantly (p< 0.05) greater in the CRB trial than in the CHOC trial (increase CHOC 27.9 134.8 UL1, CRB 211.9 192.5 UL1), with differences not significant for CK levels before the second exercise session (CHOC 394.8 166.1 UL1, CRB 489.1 264.4UL1) between the 2 trials. These findings indicate no difference between CHOC and this commercial beverage as potential recovery aids for cyclists between intense workouts.

Comments

This article was originally published in Applied Physiology, Nutrition, and Metabolism. The full-text article from the publisher can be found here.

Due to copyright restrictions, this article is not available for free download from ScholarWorks @ CWU.

Journal

Applied Physiology, Nutrition, and Metabolism

Rights

Published by NRC Research Press

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