Clustering of obesogenic behaviours amongst 140 052 South American adolescents: a harmonized meta-analysis of national health surveys.

Background: Physical activity, sedentary behaviour, and diet synergically coexist (in different ways) within adolescents' lifestyles. Thus, understanding obesogenic behaviour patterns within populations is critical to promoting adolescents' health. This study investigates clustering patterns of adolescents' obesogenic behaviours across South American countries.

What are the correlates of intention to be physically active in Brazilian adolescents? A network analysis.

Objective: The current study aimed to explore the association of individual characteristics, social and environmental factors - school and region - in the intention to be physically active in Brazilian adolescents.

Methods: This is a cross sectional study based on the third edition of the National School Health Survey. The study included a total of 53,937 adolescents.