| Relationship between aerobic fitness level and daily energy expenditure in weight-stable humans. | |
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MedLine Citation:
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PMID: 1636689 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The relationship between exercise and energy expenditure is unclear, with some suggestions that exercise leads to increased energy expenditure over and beyond the increase due to the exercise itself. In this cross-sectional study, we examined the relationships among aerobic fitness level, body composition, and total daily energy expenditure in 78 subjects. Daily energy expenditure (determined in a whole room calorimeter) was significantly correlated with both fat-free mass (FFM) and aerobic fitness (estimated from maximum aerobic capacity or VO2max). However, multiple-regression analysis demonstrated that, after accounting for FFM, VO2max did not explain a significant amount of the remaining variation in energy expenditure. In addition, the relationship between resting metabolic rate and both FFM and VO2max was evaluated using data from 214 weight-stable subjects analyzed retrospectively. The results were identical with the results obtained from the 78 subjects in that VO2max did not have effects independent of FFM on energy expenditure. We conclude that aerobic fitness does not have a direct effect on energy expenditure. However, it may have effects that are mediated through body composition, since in both populations studied here, VO2max was positively correlated with FFM and negatively correlated with adiposity. |
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Authors:
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T A Sharp; G W Reed; M Sun; N N Abumrad; J O Hill |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: The American journal of physiology Volume: 263 ISSN: 0002-9513 ISO Abbreviation: Am. J. Physiol. Publication Date: 1992 Jul |
Date Detail:
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Created Date: 1992-08-21 Completed Date: 1992-08-21 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0370511 Medline TA: Am J Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: E121-8 Citation Subset: IM |
Affiliation:
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Department of Pediatrics, Vanderbilt University, Nashville, Tennessee 37232. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aerobiosis Body Composition Body Temperature Body Weight* Calorimetry, Indirect Cross-Sectional Studies Eating / physiology Energy Metabolism* Female Humans Male Oxygen Consumption Physical Fitness* Rest Retrospective Studies |
| Grant Support | |
ID/Acronym/Agency:
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DK-26657/DK/NIDDK NIH HHS; DK-42549/DK/NIDDK NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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