Efeito combinado da atividade física e redução do tempo de tela para prevenção do excesso de peso em adolescentes

Autores

DOI:

https://doi.org/10.1590/1980-0037.2019v21e58392

Resumo

O principal objetivo deste trabalho foi identificar a associação entre o efeito combinado da atividade física e redução do tempo de tela com excesso de peso em adolescentes. Oestudo foi transversal com amostra composta por 613 adolescentes, com idade entre 15 a 18 anos residentes em município do nordeste do Brasil. A atividade física foi medida por meio do IPAQ (International Physical Activity Questionnaire), versão curta e o tempo de tela foi verificado por meio de duas questões sobre o tempo que, em média o entrevistado assistia televisão, jogava videogame, usava o celular ou o computador em um dia de semana normal e em um dia no final de semana. O poder preditivo e os pontos de corte do tempo de tela e da atividade física para o desfecho de interesse foram identificados por meio das curvas Receiver Operating Characteristic (ROC). Foram propostos ainda diferentes modelos de regressão logística tendo o excesso de peso como variável dependente. Em todos os modelos de análise foi fixada como referência a combinação pouca atividade física e muito tempo de tela. Utilizou-se intervalo de confiança (IC) a 95%. Em rapazes, a combinação atividade física e pouco tempo de tela em um dia do final de semana foi inversamente associada ao excesso de peso (OR = 0,31; 0,12-0,85). O efeito combinado da atividade física e redução do tempo sentado frente a TV, tela de computador e assemelhados em um dia no final de semana está inversamente associado ao excesso de peso em rapazes.

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2019-12-31

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