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Exercise Improves Fat Metabolism in Muscle But Does Not Increase 24-h Fat Oxidation

Melanson, Edward L.1,2; MacLean, Paul S.1,2; Hill, James O.2,3

Exercise & Sport Sciences Reviews: April 2009 - Volume 37 - Issue 2 - pp 93-101
doi: 10.1097/JES.0b013e31819c2f0b
Articles

Despite decades of research into the effects of exercise on fat metabolism, there is still no clear understanding of how exercise helps to regulate fat mass. Although exercise improves the capacity of muscle to oxidize fat, our studies suggest that moderate duration exercise (≤1 h) has little impact on 24-h fat oxidation.

1Division of Endocrinology, Metabolism, and Diabetes, 2Center for Human Nutrition and 3Department of Pediatrics, Section of Nutrition, University of Colorado Denver, School of Medicine, Denver, CO

Address for correspondence: Edward L. Melanson, Ph.D., FACSM, Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Denver, School of Medicine, MS 8106, 12801 East 17th Ave., RC1 South RM 7103, Aurora, CO 80045 (E-mail: Ed.melanson@ucdenver.edu).

Accepted for publication: December 11, 2008.

Associate editor: Barry Braun, Ph.D., FACSM

©2009 The American College of Sports Medicine