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Table 4 Combined main effects (Model 1) and age dependent effects (Model 2) and interaction (Model 3) of time spent in sedentary behaviour and moderate-to-vigorous physical activity on body mass index

From: Longitudinal analysis of physical activity, sedentary behaviour and anthropometric measures from ages 6 to 11 years

  Model 1 Model 2 Model 3
β 95% CI β 95% CI β 95% CI
Age 0.49 0.45–0.54 *** 0.33 0.13–0.52 ** 0.49 0.45–0.54 ***
SB 0.09 0.03–0.16 ** 0.01 −0.08 – 0.10   0.12 0.03–0.21 *
MVPA −0.10 −0.17 – − 0.02 * −0.06 − 0.17 – 0.05   0.01 − 0.20 – 0.22  
SB x Age     0.03 0.01–0.06 *    
MVPA x Age     −0.02 −0.06 – 0.03     
SB x MVPA        −0.02 −0.06 – 0.02  
  1. Abbreviations: SB sedentary behaviour per 60 min/day, MVPA moderate to vigorous PA per 60 min/day, CI confidence interval
  2. Data were analysed with the use of 3 separate mixed models, adjusted for covariates gender, intervention group, wear time and study country; age was centred to the lowest age of any participant (5.89 years)
  3. *P < 0.05, **P < 0.01, ***P < 0.001