Document Detail

Cardiorespiratory fitness and metabolic risk factors in obesity.
MedLine Citation:
PMID:  19770655     Owner:  NLM     Status:  MEDLINE    
PURPOSE OF REVIEW: An increase in cardiorespiratory fitness (CRF) through exercise training appears to partly ameliorate the health hazards of obesity and a number of mechanisms might explain the potential benefits. We review recent evidence about the relationships between CRF, exercise training and metabolic risk factors in obesity. RECENT FINDINGS: Epidemiological data have shown that the anti-inflammatory effects of exercise could be an important mechanism in explaining cardio-protective effects of physical activity. Emerging evidence suggests that exercise training reduces markers of inflammation and improves glucose control in obesity, independent of weight loss. Novel mechanisms appear to involve exercise-induced changes in CD14+CD16+ cell populations, expression of toll-like receptors, and key changes in the metabolic regulation of visceral white adipose tissue. Other promising recent research has focused on exercise-induced signalling pathways governing glucose metabolism, such as insulin receptor substrate and Akt substrate. Using novel imaging techniques, studies have demonstrated exercise-induced improvements in lipoprotein subfraction particle size, and reduction in visceral adipose tissue and liver fat, independent of weight loss. These effects appear to be mostly restricted to interventions consisting of relatively high doses of exercise or exercise combined with calorie restriction, although further work is required to elucidate the dose-response relationships. SUMMARY: Physical activity and the pursuit of physical fitness are important in the treatment of obesity because exercise training can improve a number of metabolic risk factors independent of weight loss. Thus exercise can provide important health benefits irrespective of weight loss in obese and overweight individuals.
Mark Hamer; Gary O'Donovan
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Current opinion in lipidology     Volume:  21     ISSN:  1473-6535     ISO Abbreviation:  Curr. Opin. Lipidol.     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-01-26     Completed Date:  2010-03-26     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9010000     Medline TA:  Curr Opin Lipidol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1-7     Citation Subset:  IM    
Department of Epidemiology and Public Health, University College London, London, UK.
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MeSH Terms
Cardiovascular Physiological Phenomena*
Obesity / metabolism*,  physiopathology*,  prevention & control
Physical Fitness*
Respiratory Physiological Phenomena*
Risk Factors

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