Table 1 The duration of physical activity at baseline and at follow-up

Organized physical activity (hours/week)

Baseline before intervention

   Outside the school

0.7 ± 1.2

1.3 ± 1.6

Baseline after intervention

   School curriculum

3.3

1.0 **

   Outside the school

0.7 ± 1.2

1.3 ± 1.6

   Total physical activity

4.0 ± 1.2

2.3 ± 1.6 **

Follow-up

   School curriculum

3.3

1.0 **

   Outside the school

1.1 ± 1.3

1.9 ± 1.9 *

   Total physical activity

4.4 ± 1.3

2.9 ± 1.9 **