Association between screen time and dietary patterns and overweight/obesity among adolescents
Associação entre tempo de tela e padrões alimentares com sobrepeso/obesidade em adolescentes
Rev. Nutr. (Online); 30 (3), 2017
Publication year: 2017
ABSTRACT Objective The association between screen time and dietary patterns and overweight/obesity among adolescents was analysed in this study. Methods In this cross-sectional study, 963 Brazilian adolescents, aged between 11 and 14 years were evaluated. Body mass index was used to assess overweight/obesity. Dietary patterns and screen time were assessed using qualitative questionnaires. Principal component analysis was used to obtain dietary patterns.
Confounder variables were:
type of school (public or private), sexual maturation, mother's weight and mother's education. The Chi-square test was used for the crude analysis; for the adjusted analysis was used Poisson regression with sample weighting. Results Overweight/obesity prevalence was 29.8% and statistically higher among boys (34.7%). Higher screen time prevalence was 39.1%.The dietary patterns obtained were:
obesogenic; coffee and dairy products; traditional Brazilian meal; fruit and vegetables; bread and chocolate milk. The dietary pattern that more closely represented student food consumption was the obesogenic pattern. Screen time was not significantly associated with overweight/obesity. The obesogenic pattern (in both sexes), the coffee and dairy products pattern, and the bread and chocolate milk pattern (only in girls), were inversely associated with overweight/obesity. In this study, dietary patterns influenced overweight/obesity, although in some cases, in an inverse way from what expected. Conclusion A high prevalence of overweight/obesity and a high proportion of screen time activities among the adolescents were observed. Our results indicate a high consumption of unhealthy dietary pattern among adolescents.
RESUMO Objetivo Analisar a associação entre tempo de tela e padrões alimentares com sobrepeso/obesidade em adolescentes de Florianópolis, Santa Catarina, Brasil. Métodos Estudo transversal com amostra probabilística de 963 adolescentes de 11 a 14 anos de idade matriculados em escolas públicas e privadas do município. O sobrepeso/obesidade foi avaliado por meio do índice de massa corporal e o consumo alimentar do dia anterior por meio da aplicação de questionário qualitativo. Análise de Componentes Principais foi utilizada para obtenção dos padrões alimentares.