alexa [Determining factors in body mass index of Spanish schoolchildren based on the National Health Surveys].
Cardiology

Cardiology

Journal of Hypertension: Open Access

Author(s): Gonzlez Montero de Espino, Herrez A, Marrodn Serrano MD

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Abstract INTRODUCTION: Spanish National Health Surveys do not establish synergistic relations between variables. The purpose of this study was to perform a deeper historical analysis of body mass index (BMI) and its relation to other parameters included in the questionnaire for children. MATERIAL AND METHODS: Data from interviews conducted (between 1987 and 2006) to parents and guardians of schoolchildren aged 9-15 years were analyzed. Height and weight reported by parents were selected and used to calculate BMI. Subjects were stratified by age, gender, time spent sleeping and watching television and, finally, frequency of physical activity. The historical trend of BMI and its dependence on the above factors were analyzed using ANOVA tests. RESULTS AND CONCLUSIONS: Significant weight and height increases were seen, which were more marked in boys aged 12 to 15 years. Influence of physical activity on BMI was shown, but decreased (P<.001) as exercise time increased. By contrast, BMI increased (P<.001) as time spent watching television increased. On the other hand, the role of sleep as modulator of body size was confirmed, since schoolchildren aged 9-11 years who slept over 9h had lower BMIs (P<.001). In subjects aged 12 to 15, BMI decreased (P<.001) from 6h of sleep. Copyright © 2012 SEEN. Published by Elsevier Espana. All rights reserved. This article was published in Endocrinol Nutr and referenced in Journal of Hypertension: Open Access

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