Mixed effect models examining the change in weekly (weekdays and weekend days weighted average) moderate-to-vigorous physical activity (min/d) from childhood to adolescence and from adolescence to young adulthood in boys and girls.

†<p>Age was centered on age at baseline. The coefficient (confidence intervals, CI) is interpreted as change in physical activity (min/d) per year of follow-up. Mean (min-max) follow-up period was 7.5 (4.9–9.4) years and 7.9 (5.7–10.3) in the young cohort and older cohort respectively.</p>‡<p>The coefficient for age*country interaction term is interpreted as follows: e.g. Coef = −4.4, physical activity decreased 4.4 min/d more in Swedish participants compared with Estonian participants per year of follow-up.