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Open Access item Combined influence of lifestyle risk factors on body fat in Spanish adolescents - The AVENA study

Authors:Martínez Gómez, D.
Moreno, Luis A.
Romeo, J.
Rey López, J. P.
Castillo, R.
Cabero, M. J.
Vicente-Rodríguez, G.
Gutiérrez, A.
Veiga, Oscar, L.
Marcos, Ascensión
Keywords:Obesity, Adolescence, Diet, Physical activity, Sleep duration, Television viewing
Issue Date:2011
Publisher:S. Karger AG
Citation:Obesity Facts 4: 105- 111 (2011)
Abstract:Objective: To examine the combined influence of four lifestyle risk factors related to physical activity, television viewing, sleep duration, and meal frequency on body fat (BF) in adolescents. Method: This cross-sectional study comprised 1,310 Spanish adolescents (age 13-18.5 years). Lifestyle variables were self-reported and BF indicators (weight, height, six skinfold thicknesses, waist circumference) measured during the years 2000-2002. Lifestyle risk factors were: physically inactive, ≥3 h/day watching television, <8 h/day sleep duration, and <5 meals a day. The number of lifestyle risk factors was calculated for each participant, ranging from 0 to 4. Results: The number of lifestyle risk factors was positively associated with sum of six skinfolds, %BF, waist circumference, and waist-height ratio (all p < 0.001). The odds ratios (95% confidence interval) of overweight (including obesity) for groups with 1, 2, and 3-4 lifestyle risk factors compared with those with 0 were 2.86 (1.77-4.62), 3.61 (2.16-6.04), and 5.81 (3.07-10.99), respectively (p for trend <0.001). All the observations were independent of age, gender, race, socioeconomic status, and fat free mass. Conclusion: The combined influence of four lifestyle risk factors is positively associated with BF and an approximately sixfold risk of overweight in adolescents. © 2011 S. Karger AG, Basel.
Identifiers:doi: 10.1159/000327686
issn: 1662-4025
Appears in Collections:(ICTAN) Artículos

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