Document Detail

Effects of training on weight, food intake, and body composition in aging rats.
MedLine Citation:
PMID:  3788826     Owner:  NLM     Status:  MEDLINE    
This study investigated the effect of endurance training on body weight, food intake, and body composition in female rats age 6, 15, and 27 mo. Animals underwent 12 wk of treadmill running. There was a significant increase in percent body fat associated with age. Training induced significant reductions in body fat which were of the same relative magnitude in all age groups. The 6-mo and 15-mo exercising rats significantly increased their food intake in response to the training stimulus; the 27-mo trained animals were unable to increase their food consumption relative to controls. It was concluded that 27-mo old animals are capable of changes in body composition similar to those of their younger counterparts, however, physiological mechanisms responsible for these shifts are age dependent. Older animals do not compensate their dietary intake for the increased energy expenditure of exercise as do the younger animals.
R S Mazzeo; S M Horvath
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The American journal of clinical nutrition     Volume:  44     ISSN:  0002-9165     ISO Abbreviation:  Am. J. Clin. Nutr.     Publication Date:  1986 Dec 
Date Detail:
Created Date:  1986-12-29     Completed Date:  1986-12-29     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0376027     Medline TA:  Am J Clin Nutr     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  732-8     Citation Subset:  AIM; IM    
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MeSH Terms
Aging / physiology*
Body Composition*
Body Weight
Feeding Behavior / physiology*
Heart / anatomy & histology
Organ Size
Physical Education and Training*
Physical Endurance
Rats, Inbred F344

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