Consumo alimentar e padrão de atividade física como determinantes do estado nutricional: um estudo longitudinal com adolescentes / Dietary intake and physical activity pattern as determinants of nutritional status changes: a longitudinal study with adolescents

AUTOR(ES)

Carla Cristina Enes

DATA DE PUBLICAÇÃO

2010

RESUMO

Introduction - With the rise of obesity prevalence among young people, is increasing the number of researches to identify factors associated with the occurrence of this nutritional disorder. Objective - To identify the dietary and physical activity factors associated with nutritional status change of adolescents. Methods - This is a cohort study conducted with 256 adolescents of both genders, with ages ranging from 10 and 17 years, from public schools of Piracicaba, Sao Paulo. Adolescents were interviewed on two occasions, with the average interval of one year. Nutritional status from body mass index, usual food intake (food-frequency questionnaire for adolescents-FFQA), physical activity pattern (physical activity and inactivity), sexual maturation and demographic variables were assessed. Multiple regression was used to identify possible associations. It was defined as dependent variable the annual BMI z-score change and as independent variables, the annual change in consumption of food groups of interest and practice of physical activity. Results - An increase of computer use, and sugar-sweetened beverages consumption was verified for both genders. The consumption of fat, sweetened fruit juices and fatty foods decreased. Among girls, the consumption of fruits and vegetables increased in an interval of one year. In the multiple analyses, it was observed that increased consumption of fatty foods ( = 0.036, p = 0.048) and sweetened fruit juices ( = 0.053, p = 0.034) was positively associated with the rise of BMI z-score. Conclusion - Change in adolescents BMI z-score over a year is directly and independently associated with changes in fatty foods and sweetened fruit juices. Further prospective researches with longer follow-up are necessary to better understand the complex etiology of obesity

ASSUNTO(S)

consumo de alimentos Índice de massa corporal motor activity adolescente atividade motora adolescent body mass index food consumption

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