title: [Status of exercise and sedentary activities in the leisure time among third and fourth grade pupils in three cities of Shandong province].
abstract: OBJECTIVE
  To analyze the status and the influence factors of exercise and sedentary activities in the leisure time among third and fourth grade pupils in Qingdao, Tai' an and Yantai city of Shandong province.
  
  
  METHODS
  With random cluster sampling, a total of 2283 primary students were selected from three cities of Shandong province. Questionnaires were used to collect the information on their exercise, sedentary activities.
  
  
  RESULTS
  In the past week the participation rate of exercise in the leisure time among the pupils was 65.9%. Among the pupils who participated exercise, the average days of moderate and high-intensity exercise was four, and the average daily exercise time was 30 minutes. The average time of sedentary activities in the leisure time was 0.9 h/d, and the rate of 2 hours and over per day of sedentary activities was 13.6%. Pupils participating the exercise was related to their area, gender, their satisfaction of their body image and their parents' exercise. Their sedentary patterns was related to their understanding of their own body weight and their parents' sedentary behavior.
  
  
  CONCLUSIONS
  Intervention related to physical activity should be strengthened among pupils and their parents to promote their physical activity level.
authors.forename: Chao
authors.initials: C
authors.lastname: Song
authors.lastname: Yu Xinping
authors.forename: Caicui
authors.initials: C
authors.lastname: Ding
authors.forename: Baojie
authors.initials: B
authors.lastname: Zhen
authors.forename: Jian
authors.initials: J
authors.lastname: Chen
authors.forename: Yanyong
authors.initials: Y
authors.lastname: Wang
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.forename: Ailing
authors.initials: A
authors.lastname: Liu
mesh_terms: D001835:Body Weight; D002648:Child; D002681:China; D002947:Cities; D016000:Cluster Analysis; D015444:Exercise; D015438:Health Behavior; D006801:Humans; D007899:Leisure Activities; D057185:Sedentary Behavior; D013334:Students; D011795:Surveys and Questionnaires; D014505:Urban Population