Table 3 Energy expenditure measured using a GENEActiv Actigraph GT3X+ accelerometer at baseline, after 4 months and 12 months of intervention in the total study population and by gender (mean ± SD)

Sedentarism (min/d)

All

397.0 ± 77.0

365.2 ± 73.6

255.5 ± 85.2

< 0.0001

< 0.0001

Boys

397.0 ± 68.3

354.2 ± 60.4

243.0 ± 78.4

< 0.0001

< 0.001

Girls

397.1 ± 85.6

375.7 ± 86.8

268.9 ± 92.1

< 0.0001

< 0.001

 Light (min/d)

All

667.4 ± 72.3

670.2 ± 87.3

789.2 ± 92.0

< 0.0001

< 0.0001

Boys

663.6 ± 63.2

675.6 ± 93.0

797.5 ± 91.9

< 0.0001

< 0.001

Girls

671.4 ± 80.9

665.2 ± 82.1

780.4 ± 92.1

< 0.0001

< 0.001

 Moderate (min/d)

All

15.3 ± 15.5

35.5 ± 14.8

28.0 ± 17.4

< 0.0001

< 0.0001

Boys

18.9 ± 18.0

40.5 ± 16.5

31.7 ± 19.9

< 0.0001

0.01

Girls

11.6 ± 11.5

30.7 ± 11.2

24.0 ± 13.4

< 0.0001

< 0.001

 Vigorous (min/d)

All

1.2 ± 3.1

9.1 ± 6.3

7.3 ± 6.4

< 0.0001

< 0.0001

Boys

1.5 ± 3.9

9.7 ± 7.3

7.8 ± 6.9

< 0.0001

< 0.001

Girls

1.0 ± 1.8

8.4 ± 5.2

6.7 ± 5.8

< 0.0001

< 0.001