title: Active travel to school, BMI and participation in organised and non-organised physical activity among Portuguese adolescents.
abstract: OBJECTIVE
  To assess the relationship between participation in organised (OPA) and non-organised physical activity (NOPA), commuting to school and BMI.
  
  
  METHODS
  Questionnaire assessing participation in OPA, NOPA, and travel behavior submitted in spring 2006 to 721 Portuguese secondary school students. Active travellers walked or biked (AT). Passive travellers drove or took the bus (PT). Height and weight were measured.
  
  
  RESULTS
  AT was related to NOPA among boys (odds ratio (OR)=1.8, p < or = 0.05) but not among girls. AT was unrelated to OPA. BMI was weakly associated with OPA (boys: OR=0.56, p < or = 0.05; girls: OR=0.54, p < or = 0.05) and not with NOPA.
  
  
  CONCLUSIONS
  After-school organised and non-organised physical activities do not predict active travelling to school among Portuguese adolescents.
authors.affiliation: Research Centre in Physical Activity Health and Leisure, Faculty of Sport, University of Porto, Rua Dr. Plácido Costa, 91, 4200 450 Porto, Portugal. msantos@fade.up.pt
authors.forename: Maria Paula
authors.initials: MP
authors.lastname: Santos
authors.forename: José
authors.initials: J
authors.lastname: Oliveira
authors.forename: José Carlos
authors.initials: JC
authors.lastname: Ribeiro
authors.forename: Jorge
authors.initials: J
authors.lastname: Mota
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D015992:Body Mass Index; D015444:Exercise; D005260:Female; D006801:Humans; D008297:Male; D016017:Odds Ratio; D011174:Portugal; D012574:Schools; D013177:Sports; D011795:Surveys and Questionnaires; D014186:Transportation / Q000379:methods*