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Putative factors that may modulate the effect of exercise on liver fat: insights from animal studies.
MedLine Citation:
PMID:  21912741     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
An increase in intrahepatic triglyceride (IHTG) content is the hallmark of nonalcoholic fatty liver disease (NAFLD) and is strongly associated with insulin resistance and dyslipidemia. Although regular aerobic exercise improves metabolic function, its role in regulating fat accumulation in the liver is incompletely understood, and human data are scarce. Results from exercise training studies in animals highlight a number of potential factors that could possibly mediate the effect of exercise on liver fat, but none of them has been formally tested in man. The effect of exercise on IHTG content strongly depends on the background diet, so that exercise is more effective in reducing IHTG under conditions that favor liver fat accretion (e.g., when animals are fed high-fat diets). Concurrent loss of body weight or visceral fat does not appear to mediate the effect of exercise on IHTG, whereas sex (males versus females), prandial status (fasted versus fed), and duration of training, as well as the time elapsed from the last bout of exercise could all be affecting the observed exercise-induced changes in IHTG content. The potential importance of these factors remains obscure, thus providing a wide array of opportunities for future research on the effects of exercise (and diet) on liver fat accumulation.
Authors:
Faidon Magkos
Publication Detail:
Type:  Journal Article     Date:  2011-09-08
Journal Detail:
Title:  Journal of nutrition and metabolism     Volume:  2012     ISSN:  2090-0732     ISO Abbreviation:  J Nutr Metab     Publication Date:  2012  
Date Detail:
Created Date:  2011-09-13     Completed Date:  2011-11-10     Revised Date:  2012-04-26    
Medline Journal Info:
Nlm Unique ID:  101526296     Medline TA:  J Nutr Metab     Country:  United States    
Other Details:
Languages:  eng     Pagination:  827417     Citation Subset:  -    
Affiliation:
Department of Nutrition and Dietetics, Harokopio University, 17671 Athens, Greece.
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