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Relations of total physical activity and intensity to fitness and fatness in children: the European Youth Heart Study
Örebro University, Department of Clinical Medicine.ORCID iD: 0000-0003-1067-8627
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2006 (English)In: American Journal of Clinical Nutrition, ISSN 0002-9165, E-ISSN 1938-3207, Vol. 84, no 2, p. 299-303Article in journal (Refereed) Published
Abstract [en]

Background: It is unclear how the amount and intensity of physical activity (PA) are associated with cardiovascular fitness (CVF) and body fatness in children.

Objective: We aimed to examine the associations of total PA and intensity levels to CVF and fatness in children.

Design: A cross-sectional study of 780 children aged 9–10 y from Sweden and Estonia was conducted. PA was measured by accelerometry and was expressed as min/d of total PA, moderate PA, and vigorous PA. CVF was measured with a maximal ergometer bike test and was expressed as W/kg. Body fat was derived from the sum of 5 skinfold-thickness measurements. Multiple regression analysis was used to determine the degree to which variance in CVF and body fat was explained by PA, after control for age, sex, and study location.

Results: Lower body fat was significantly associated with higher levels of vigorous PA, but not with moderate or total PA. Those children who engaged in >40 min vigorous PA/d had lower body fat than did those who engaged in 10–18 min vigorous PA/d. Total PA, moderate PA, and vigorous PA were positively associated with CVF. Those children who engaged in >40 min vigorous PA/d had higher CVF than did those who accumulated <18 min vigorous PA/d.

Conclusions: The results suggest that PA of vigorous intensity may have a greater effect on preventing obesity in children than does PA of lower intensity, whereas both total and at least moderate to vigorous PA may improve children's CVF.

Place, publisher, year, edition, pages
2006. Vol. 84, no 2, p. 299-303
Keywords [en]
Adipose Tissue/metabolism, Body Composition/physiology, Child, Cross-Cultural Comparison, Cross-Sectional Studies, Estonia/epidemiology, Exercise/*physiology, Female, Humans, Male, Multivariate Analysis, Obesity/*epidemiology/*metabolism, Physical Fitness/*physiology, Regression Analysis, Sex Factors, Skinfold Thickness, Sweden/epidemiology, Time Factors
National Category
Physiology Nutrition and Dietetics Medical and Health Sciences
Research subject
Nutrition
Identifiers
URN: urn:nbn:se:oru:diva-4211PubMedID: 16895875OAI: oai:DiVA.org:oru-4211DiVA, id: diva2:138510
Available from: 2007-12-05 Created: 2007-12-05 Last updated: 2018-01-13Bibliographically approved

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Hurtig-Wennlöf, Anita

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