From: Systematic review of sedentary behaviour and health indicators in school-aged children and youth
Type of Study | Number of Studies | Number of participants | Narrative recommendation and main findings |
---|---|---|---|
RCT | 0 | Â | Â |
Longitudinal | 3 | 3530 | Watching > 1 hr of TV per day is associated with attention difficulties. |
Intervention | 0 | Â | Â |
Cross sectional | 32 | 157637 | > 2 hrs of screen time per day resulted in lower academic achievement. |
Intervention | 0 | Â | Â |
Total of all studies | 35 | 161167 | > 2 hrs of screen time per day is negatively associated with academic achievement. Dose-response relation between time spent playing video games, watching TV and using the computer (for non-academic purposes). > 3 hrs/day associated with poor school performance and lower I.Q. scores. Mean Downs and Black score = 19.1 (± 2.1), Level 3 evidence. |