title: Sedentary Behaviors by Type of Day and Physical Activity in Spanish Adolescents: A Socio-Ecological Approach.
abstract: The aim of this study was to analyze the relationship between TV and computer use, study time, and physical activity, with regard to gender, school, and weekday/weekend. Adolescents (N = 1,609; M age = 14.5 yr., SD = 1.3) reported on physical activity, sedentary behavior, their parents' employment, and environmental factors. The relationship between PA and screen media behaviors was negative on weekdays, while no relationship was found at weekends. Only 30.7% of adolescents met the screen media guidelines on weekdays and 14.6% at weekends. Girls spent more time on study, only showing a positive relationship with physical activity on weekdays. Each type of sedentary behavior has different correlates for weekdays and weekends.
authors.affiliation: Faculty of Social Sciences and Humanities, University of Zaragoza, Spain aabarca@unizar.es.
authors.forename: Alberto
authors.initials: A
authors.lastname: Abarca-Sos
authors.affiliation: Laboratoire d'Analyse de la Performance Sportive, University of Pau and Pays de l'Adour, France.
authors.forename: Julien E
authors.initials: JE
authors.lastname: Bois
authors.affiliation: Faculty of Human Sciences and Education, University of Zaragoza, Spain.
authors.forename: Alberto
authors.initials: A
authors.lastname: Aibar
authors.affiliation: Faculty of Social Sciences and Humanities, University of Zaragoza, Spain.
authors.forename: José
authors.initials: J
authors.lastname: Antonio Julián
authors.affiliation: Faculty of Health Sciences and Sport, University of Zaragoza, Spain.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Generelo
authors.affiliation: Faculty of Human Sciences and Education, University of Zaragoza, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Zaragoza
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D015444:Exercise / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D010290:Parents; D012574:Schools; D057185:Sedentary Behavior; D012931:Social Environment
keywords: adolescents; gender; physical activity; sedentary behaviors