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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