Table 1 Descriptive characteristics of total sample, boys and girls

Age (yrs)

8.0 ± 0.6

7.9 ± 0.7

7.9 ± 0.7

Height (cm)

135.1 ± 7.1

133.2 ± 6.8*

134.1 ± 6.9

Body mass (kg)

33.3 ± 8.6

30.8 ± 6.6*

32.1 ± 7.8

BMI (kg/m²)

18.0 ± 3.2

17.2 ± 2.6

17.6 ± 2.9

body fat%

16.9 ± 7.7

19.1 ± 5.6*

17.9 ± 6.8

FM (kg)

6.2 ± 4.6

6.1 ± 2.9

6.15 ± 3.9

FFM (kg)

27.2 ± 4.6

24.6 ± 4.3*

25.9 ± 4.6

Sum of skinfolds (mm)

35.0 ± 21.5

45.8 ± 23.2*

40.28 ± 22.9

Waist circumference (cm)

60.4 ± 8.2

57.01 ± 6.3*

58.8 ± 7.5

Waist-to-height ratio

0.45 ± 0.05

0.43 ± 0.04

0.44 ± 0.05

Sedentary time (min/day)

436 ± 62

435 ± 50

435 ± 56

Light PA (min/day)

300 ± 46

300 ± 40

300 ± 44

Moderate PA (min/day)

51 ± 17

43 ± 15*

47 ± 16

Vigorous PA (min/day)

21 ± 13

22 ± 14

22 ± 13

MVPA (min/day)

72 ± 28

65 ± 26

69 ± 27

Met current PA recommendations

13 %

9 %

11 %

Met ≥ 60 min MVPA per day (%) over all measured days

65 %

56 %

60.5 %