Journal of Applied Physiology Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 76: 1936-1945, 1994;
8750-7587/94 $5.00
This Article
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Horton, T. J.
Right arrow Articles by Hill, J. O.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Horton, T. J.
Right arrow Articles by Hill, J. O.

Journal of Applied Physiology, Vol 76, Issue 5 1936-1945, Copyright © 1994 by American Physiological Society

ARTICLES

Energy balance in endurance-trained female cyclists and untrained controls

T. J. Horton, H. J. Drougas, T. A. Sharp, L. R. Martinez, G. W. Reed and J. O. Hill
Department of Pediatrics, Vanderbilt University, Nashville, Tennessee 37232.

Reports of low energy intakes in trained female athletes imply they have an increased energetic efficiency. To address this question, we determined how energy balance was achieved in endurance-trained females cyclists and lean controls (n = 5 in each group). Daily energy expenditure was measured by using standardized physical activity protocols in a whole room calorimeter on two separate occasions: a cycling day and a noncycling day. Energy intake for weight maintenance was determined by a period of controlled feeding 5 days before and the day of each energy expenditure measurement. Energy balance was achieved in the cyclists on the cycling day while they consumed 2,900-3,000 kcal (their usual condition) and in controls on the noncycling day while they consumed 2,100-2,200 kcal (their usual condition). Total daily energy expenditure was not significantly different between the cyclists and controls on the noncycling day with both groups performing similar levels of activity. On the cycling day, daily energy expenditure was significantly greater in the cyclists vs. controls (P < 0.03) as a result of their greater amount of cycling activity. Components of daily energy expenditure, i.e., resting metabolic rate and thermic effect of food and activity (noncycling), were not significantly different between groups. Overall, we found no significant increase in the energetic efficiency of endurance-trained female cyclists compared with controls.


This article has been cited by other articles:


Home page
 Am. J. Physiol. Endocrinol. Metab.Home page
J. A. Levine
Nonexercise activity thermogenesis (NEAT): environment and biology
Am J Physiol Endocrinol Metab, May 1, 2004; 286(5): E675 - E685.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
J. W. Helge, B. J. Wu, M. Willer, J. R. Daugaard, L. H. Storlien, and B. Kiens
Training affects muscle phospholipid fatty acid composition in humans
J Appl Physiol, February 1, 2001; 90(2): 670 - 677.
[Abstract] [Full Text] [PDF]

Home page
 J. Clin. Endocrinol. Metab.Home page
M. Brochu, R. D. Starling, P. A. Ades, and E. T. Poehlman
Are Aerobically Fit Older Individuals More Physically Active in Their Free-Living Time? A Doubly Labeled Water Approach
J. Clin. Endocrinol. Metab., November 1, 1999; 84(11): 3872 - 3876.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online