| Energy expenditure of obese, overweight, and normal weight females during lifestyle physical activities. | |
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MedLine Citation:
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PMID: 19086187 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To quantify energy expenditure of various lifestyle physical activities of obese, overweight, and normal-weight girls. METHODS: In total, fifty-five girls participated in six activities: a treadmill walk at 4.0 km x hr(-1), run, football throw, walk in open area, cycle, and riding a scooter. Intensities for all activities except the treadmill walk were self-selected. Energy expenditure was measured using the COSMED K4b(2) portable metabolic system. Analyses of variance were used to compare the three groups (obese n = 11, overweight n = 16, and normal weight n = 28) on relative VO2 (ml x kg(-1) x min(-1) and ml x FFM(-1) x min(-1)), and absolute energy expenditure (kJ x min(-1)). Magnitudes of the mean differences were examined using Cohen's delta (ES). RESULTS: Relative VO2 (ml x FFM(-1) x min(-1)) was not significantly different (p > 0.05) among the groups for any activity. Obese girls expended more energy (p < 0.05) than normal-weight girls on all weight bearing activities. These differences were large (ES > or = 0.91). The differences in kJ x min(-1) between the obese and normal weight groups for the bicycle and scooter activities were moderate to large (ES > or = 0.56), although not statistically significant. The overweight group expended more energy than the normal weight group and less energy than the obese group on all activities (ES = 0.17 to 1.82), although these differences were generally not statistically significant. CONCLUSIONS: The oxygen costs of various activities are similar among obese, overweight, and normal-weight girls when expressed relative to fat-free mass. When engaging in self-selected levels of activity, obese girls have a higher absolute energy expenditure than normal-weight girls. |
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Authors:
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Jennifer L Aull; David A Rowe; Robert C Hickner; Brenda M Malinauskas; Matthew T Mahar |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: International journal of pediatric obesity : IJPO : an official journal of the International Association for the Study of Obesity Volume: 3 ISSN: 1747-7166 ISO Abbreviation: Int J Pediatr Obes Publication Date: 2008 |
Date Detail:
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Created Date: 2008-12-15 Completed Date: 2009-01-07 Revised Date: 2009-11-17 |
Medline Journal Info:
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Nlm Unique ID: 101256330 Medline TA: Int J Pediatr Obes Country: England |
Other Details:
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Languages: eng Pagination: 177-85 Citation Subset: IM |
Affiliation:
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Department of Exercise and Sport Science, East Carolina University, Greenville, NC 27858, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adiposity Body Mass Index Child Energy Metabolism* Exercise* Female Humans Life Style* Obesity / metabolism*, physiopathology Overweight / metabolism*, physiopathology Oxygen Consumption |
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