Table 3 Summary table of results showing relation between sedentary behaviour and measures of body composition
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 | 8 | 1886 | Reductions in sedentary behaviour are directly related to improved body composition. |
Intervention | 10 | 3547 | TV watching and overweight/obesity were related in a dose-response manner (i.e. those who watched more TV were more likely to be overweight/obese). |
Longitudinal | 33 | 85753 | TV watching and overweight/obesity were related in a dose-response manner (i.e. those who watched more TV were more likely to be overweight/obese). |
Cross sectional | 119 | 691759 | > 2 hrs of sedentary behaviour related to increased risk of being overweight or obese. |
Total of all studies | 170 | 782884 | Meta-analysis was performed on randomized controlled studies that looked at change in BMI. They found an effect of -0.89 kg/m2 (95% CI of -1.67 to -0.11, p = 0.03) decrease in mean BMI in the intervention group. > 2 hrs of sedentary behaviour per day is associated with an increased risk for overweight/obesity. This risk increases in a dose-response manner. Each additional hour of TV viewing increased risk for obesity. > 2 hrs/day significantly increased risk for overweight/obesity. Mean Downs and Black score = 20.9 (± 1.9), Level 2 evidence. |