title: Leisure time physical activity, screen time, social background, and environmental variables in adolescents.
abstract: This study analyzes the relationships between leisure time physical activity (LTPA), sedentary behaviors, socioeconomic status, and perceived environmental variables. The sample comprised 815 girls and 746 boys. In girls, non-LTPA participants reported significantly more screen time. Girls with safety concerns were more likely to be in the non-LTPA group (OR = 0.60) and those who agreed with the importance of aesthetics were more likely to be in the active-LTPA group (OR = 1.59). In girls, an increase of 1 hr of TV watching was a significant predictor of non-LTPA (OR = 0.38). LTPA for girls, but not for boys, seems to be influenced by certain modifiable factors of the built environment, as well as by time watching TV.
authors.affiliation: Research Centre in Physical Activity, Health and Leisure, University of Porto, Porto, Portugal.
authors.forename: Jorge
authors.initials: J
authors.lastname: Mota
authors.forename: Helena
authors.initials: H
authors.lastname: Gomes
authors.forename: Mariana
authors.initials: M
authors.lastname: Almeida
authors.forename: José Carlos
authors.initials: JC
authors.lastname: Ribeiro
authors.forename: Maria Paula
authors.initials: MP
authors.lastname: Santos
mesh_terms: D000293:Adolescent; D003430:Cross-Sectional Studies; D004779:Environment Design; D015444:Exercise; D005260:Female; D006293:Health Promotion; D006801:Humans; D007899:Leisure Activities; D008297:Male; D015999:Multivariate Analysis; D011174:Portugal; D012044:Regression Analysis; D012111:Residence Characteristics; D012737:Sex Factors; D012959:Socioeconomic Factors; D013690:Television