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Báo cáo y học: "Temporal trends and recent correlates in sedentary behaviours in Chinese children"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Temporal trends and recent correlates in sedentary behaviours in Chinese children. | Cui et al. International Journal of Behavioral Nutrition and Physical Activity 2011 8 93 http www.ijbnpa.Org content 8 1 93 INTERNATIONAL JOURNAL OF BEHAVIORAL NUTRITION AND PHYSICAL ACTIVITY RESEARCH Open Access Temporal trends and recent correlates in sedentary behaviours in Chinese children Zhaohui Cui Louise L Hardy Michael J Dibley and Adrian Bauman Abstract Background Sedentary behaviours television video and computer are related to health outcomes independent of physical activity. Few studies have examined trends and correlates of sedentary behaviours among youth in developing nations. The current study is to examine temporal trends in sedentary behaviours and recent correlates of screen use in Chinese children during a period of economic transition. Methods Secondary analysis of China Health and Nutrition Surveys. Cross-sectional data on sedentary behaviours including screen use among children aged 6-18 years from four surveys in 1997 n 2 469 2000 n 1 838 2004 n 1 382 and 2006 n 1 128 . Temporal trends in screen use by socio-demographic characteristics were examined. The correlates of spending more than 2 hours per day on screen time in the most recent survey data 2006 n 986 were analysed using survey logistic regression analysis. Results Daily screen time significantly increased in each subgroup by age sex and urban rural residence with the largest increase for urban boys aged 13-18 years from 0.5 hours to 1.7 hours and for rural boys aged 6-12 years from 0.7 hours to 1.7 hours p 0.0001 . Daily time in both homework and extracurricular cultural activity increased significantly from 2000 to 2004 but was stable from 2004 to 2006. Boys OR 1.41 95 CI 1.09 -1.82 having a TV in the bedroom OR 1.86 95 CI 1.15 - 3.01 having access to internet at home OR 1.93 95 CI 1.12 - 3.31 or at internet cafés OR 2.01 95 CI 1.21 - 3.34 or often watching TV with parents OR 2.27 95 CI 1.37 - 3.74 were all associated with being more likely to be high screen users 2 hours day . .