1. PP14 Adolescents' physical activity. A three-cohort study based on health behaviour in school-aged children (HBSC) Portuguese survey. (21st October 2014) Authors: Marques, A; de Matos, MG Journal: British journal of sports medicine Issue: Volume 48(2014)Supplement 3 Page Start: A10 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗