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Title: Physical fitness and obesity are associated in a dose-dependent manner in children
Authors: Ara, I.
Sanchez-Villegas, A. 
Vicente-Rodriguez, G.
Moreno, L. A.
Leiva, M. T.
Martinez-Gonzalez, M. A.
Casajus, J. A.
UNESCO Clasification: 32 Ciencias médicas
3206 Ciencias de la nutrición
Keywords: Shuttle Run Test
Aerobic Fitness
Spanish Adolescents
Childhood Obesity
Prepubertal Boys, et al
Issue Date: 2011
Journal: Annals of Nutrition and Metabolism 
Abstract: Aims: To analyze the relationships between physical fitness, lifestyle-related factors, and obesity in a large population of children. Methods: A cross-sectional study design including children aged 7-12 years (n = 715) was used. Adiposity measures included subcutaneous fat mass (SFM) and body mass index (BMI). Physical fitness and lifestyle-related factors were also assessed. Results: When SFM was used as the adiposity variable, the odds ratios (OR) for being obese in boys in the highest quartiles of fitness were 0.02 (95% CI 0.02-0.13) for aerobic fitness, 0.04 (95% CI 0.01-0.16) for dynamic force, and 5.32 (95% CI 1.82-15.58) for running speed (in which quartile 1 corresponds to the best performance) compared with boys in the lowest quartile. In girls, the OR for those in the highest quartiles of fitness were 0.04 (95% CI 0.01-0.14), 0.16 (95% CI 0.05-0.51), and 5.24 (95% CI 1.74-15.75), respectively, showing a significant dose-response relationship between fitness and fatness in both sexes (p for trend <0.001). Conclusions: An inverse relationship between physical fitness levels and the risk of being overweight/obese was found inasmuch as children with higher physical fitness seem to be more protected against fat mass accumulation than their counterparts with lower fitness levels.
ISSN: 0250-6807
DOI: 10.1159/000322577
Source: Annals of Nutrition and Metabolism[ISSN 0250-6807],v. 57, p. 251-259 (Enero 2011)
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