title: [Social support and physical activity in adolescents from public schools: the importance of family and friends].
abstract: The aim of this study was to verify the association between different types and sources of social support and physical activity among adolescents from Curitiba, Paraná State, Brazil. A school-based survey was conducted with a representative sample of adolescents from public schools (n = 1,469). Multiple regression models were used to test the association between weekly frequency and sources of social support from family and friends and weekly frequency of physical activity. Among boys, frequent company of family (PR: 2.88; 95%CI: 2.00-4.13) and friends (PR: 5.46; 95%CI: 2.33-12.78) and positive reinforcement from friends (PR: 1.81; 95%CI: 1.18-2.77) were positively associated with physical activity. Sporadic invitation by the family was negatively associated with physical activity (PR: 0.66; 95%CI: 0.46-1.14). For girls, frequent company of family (PR: 3.39; 95%CI: 1.49-7.69) and friends (PR: 4.06; 95%CI: 2.22-7.45) increased the likelihood of physical activity. Company of friends was the most important type of social support for physical activity among these adolescents.
authors.forename: Crisley Vanessa
authors.initials: CV
authors.lastname: Prado
authors.forename: Alex Vieira
authors.initials: AV
authors.lastname: Lima
authors.forename: Rogério César
authors.initials: RC
authors.lastname: Fermino
authors.forename: Ciro Romelio Rodriguez
authors.initials: CR
authors.lastname: Añez
authors.forename: Rodrigo Siqueira
authors.initials: RS
authors.lastname: Reis
mesh_terms: D000293:Adolescent; D001938:Brazil; D003430:Cross-Sectional Studies; D005190:Family; D005260:Female; D033062:Friends; D006801:Humans; D008297:Male; D009043:Motor Activity; D012737:Sex Factors; D012944:Social Support; D012959:Socioeconomic Factors; D013334:Students; D011795:Surveys and Questionnaires