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: Tracking of TV and video gaming during childhood: Iowa Bone Development Study. | Francis et al. International Journal of Behavioral Nutrition and Physical Activity 2011 8 100 http content 8 1 100 INTERNATIONAL JOURNAL OF BEHAVIORAL NUTRITION AND PHYSICAL ACTIVITY RESEARCH Open Access Tracking of TV and video gaming during childhood Iowa Bone Development Study 1 1 13 23 Shelby L Francis Matthew J Stancel Frances D Sernulka-George Barbara Broffitt Steven M Levy and Kathleen F Janz1 2 Abstract Background Tracking studies determine the stability and predictability of specific phenomena. This study examined tracking of TV viewing TV and video game use VG from middle childhood through early adolescence after adjusting for moderate and vigorous physical activity MVPA percentage of body fat BF and maturity. Methods TV viewing and VG use were measured at ages 5 8 11 and 13 n 434 via parental- and self-report. MVPA was measured using the Actigraph BF using dual-energy x-ray absorptiometry and maturity via Mirwald predictive equations. Generalized Estimating Equations GEE were used to assess stability and logistic regression was used to predict children at risk for maintaining sedentary behaviors. Additional models examined tracking only in overfat children boys 25 BF girls 32 BF . Data were collected from 1998 to 2007 and analyzed in 2010. Results The adjusted stability coefficients GEE for TV viewing were 95 CI for boys for girls and for overfat. For VG use the adjusted stability coefficients were for boys for girls and for overfat. The adjusted odds ratios OR for TV viewing were for boys for girls and for overfat. For VG use the OR were for boys for girls and for overfat. Conclusions TV viewing and VG use are moderately stable throughout childhood and predictive of later behavior. TV viewing appears to be more stable in younger children than VG use and more predictive of later
