| Comparison of fat oxidation during exercise in lean and obese pubertal boys: clinical implications. | |
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MedLine Citation:
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PMID: 18385189 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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OBJECTIVE: To examine fat oxidation rates during exercise in lean and obese pubescent children. DESIGN: A graded leg cycle ergometry test was performed by two groups of pubescent boys (13 lean: mean (SD) age 12.0 (0.5) years, body mass index (BMI) 18.56 (1.12) kg/m(2); 17 obese: mean (SD) age 12.1 (0.1) years, BMI 26.68 (3.37) kg/m(2); p<0.001). The first step of the test was fixed at 30 W and power was gradually increased by 20 W every 3.5 min. The mean ventilatory gas measurement was obtained during the last 30 s of each step for calculation of fat oxidation rate vs exercise intensity. RESULTS: At low intensity (0-30% of peak oxygen consumption) when fat-free mass is considered, the fat oxidation rate was identical for the two groups. At higher intensities (40%, 50% and 60% of peak oxygen consumption) the fat oxidation rate was significantly higher in lean boys than in obese boys. CONCLUSION: These results confirm that obese pubertal boys have fat-free mass decreased capacities to use fat during moderate exercise. The findings suggest that obese boys need to practise physical activity at a lower intensity than healthy boys to enhance lipolysis and diminish adipose tissue and the consequences of obesity. |
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Authors:
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G Zunquin; D Theunynck; B Sesboüé; P Arhan; D Bouglé |
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Publication Detail:
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Type: Journal Article Date: 2008-04-02 |
Journal Detail:
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Title: British journal of sports medicine Volume: 43 ISSN: 1473-0480 ISO Abbreviation: Br J Sports Med Publication Date: 2009 Nov |
Date Detail:
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Created Date: 2009-10-29 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0432520 Medline TA: Br J Sports Med Country: England |
Other Details:
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Languages: eng Pagination: 869-70 Citation Subset: IM |
Affiliation:
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Laboratoire REcherche Littorale en Activités Corporelles et Sportives, Dunkerque, Université du Littoral Côte d'Opale, F 59140, Dunkerque, France. gautier.zunquin@hotmail.fr |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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