title: [Prevalence rate regarding the completion of 'recommended physical activities' and related influencing factors among junior students in 3 urban districts of Hangzhou].
abstract: OBJECTIVE
  To explore the rate on completion of the recommended physical activities and its correlates among junior students in 3 urban districts of Hangzhou.
  
  
  METHODS
  Describing the range on completion of the recommended physical activities and analyze its related demographic, cognitive and environmental factors with logistic regression model among 3867 juniors students.
  
  
  RESULTS
  7.7% of the junior students could achieve the recommended physical activities requirements. The proportions of students who were aware of the recommendation on physical activity programs showed as 31.0%. 59.2% of juniors students had physical education (PE) classes in 3 days or more within 1 week. Factors as being male (OR = 2.94), believing that adolescents should take part in at least 60 minutes' physical activities a day (OR = 4.95), having PE classes in 3 days or more within 1 week (OR = 1.44), with family encouragement on physical activities (OR = 1.06) and taking part in physical activities together (OR = 1.14), perceiving the idea that they had enough sports equipment at home (OR = 1.22) and had convenient access to sports facilities around the residential areas (OR = 1.09), and perceiving the idea that it was not safe to walk or jog around the residential area (OR = 1.11) etc. had statistically significant correlations with achieving the recommended physical activities among juniors students.
  
  
  CONCLUSIONS
  Demographic, cognitive and environmental factors had some influence on the completion of recommended physical activity program among junior students.
authors.affiliation: Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing 100191, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Li
authors.forename: Jun
authors.initials: J
authors.lastname: Lv
authors.forename: Qing-min
authors.initials: QM
authors.lastname: Liu
authors.forename: Yan-jun
authors.initials: YJ
authors.lastname: Ren
authors.forename: Li-ming
authors.initials: LM
authors.lastname: Li
mesh_terms: D000293:Adolescent; D015444:Exercise; D005260:Female; D015438:Health Behavior; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D016015:Logistic Models; D008297:Male; D013334:Students / Q000706:statistics & numerical data*; D011795:Surveys and Questionnaires