Título: Ambiente obesogênico escolar e obesidade em adolescentes brasileiros: teoria e evidências
Autora: Giovana Menegotto
Orientador: Giácomo Balbinotto Neto
Everton Nunes da Silva (UnB)
Kenya Valeria Micaela de Souza Noronha (UFMG)
Michele Lessa de Oliveira (OPAS)
Data: 16/05/2019, quinta-feira, 14h,
Local: Sala 31B da FCE
OBJECTIVES: An increased number of studies evaluate the association of school environment and overweight in adolescents, contributing to identify the aspects that can be used to elaborate programs to prevent the growth of obesity epidemy. The aim of this study was to evaluate the association between overweight and school environment in adolescent students in Brazil. METHODS: Analysis were based on a representative national sample of 10.592 students of 13 to 17 years old, from the Brazilian National Survey oh School Health (PeNSE). Multilevel linear regression models were used to identify the association between the Body Mass Index (BMI), calculated with measured height and weight, and school environment characteristics (physical activity score, cafeteria environment score, implementation School Health Program (PSE)), adjusted for socio-demographic factors and school status (public or private). RESULTS: The BMI variation between schools, that represented 3,86% of the total BMI variation (within and between schools), dropped to 1,04% after the inclusion of individual control variables, and further to 0,90% in the final model, with school characteristics. Only the implementation of PSE’s actions was statistically associated with BMI (=-0,24;p=0,03); there was no association with food and physical education environment scores (=0,05;p=0,08 and =-0,07;p=0,27, respectively). The model also included the level 1 controlled variables that were associated with BMI: female sex (=0,39;p=0,00), age (=0,44;p=0,00), students with graduated mothers (=0,48;p=0,00), having a job (=0,54;p=0,00), not having breakfast (=1,07;p=0,00) and at least one smoking parent (=0,21;p=0,03); the BMI was negatively associated with studying in public schools (=-0,27;p=0,04). CONCLUSIONS: This study identified that the Brazilian adolescents’ BMI variation between schools is related to school factors, especially the implementation of PSE’s actions. More instruments should be developed to better capture school environments and its influence on adolescent obesity. In addition, further studies are needed to evaluate the PSE impacts on obesity prevention.
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