Table 1—

Physical characteristics of the children

AllBoysGirls
n308161147
Age (years)9.81 ± 0.39.81 ± 0.39.82 ± 0.3
Weight (kg)34.1 ± 7.834.3 ± 7.733.9 ± 7.8
Height (m)1.37 ± 0.11.37 ± 0.11.37 ± 0.1
BMI (kg/m2)18.0 ± 3.118.1 ± 3.217.9 ± 3.0
Waist circumference (cm)61.5 ± 7.363.4 ± 7.359.4 ± 6.6*
Birth weight (kg)3.40 ± 0.523.46 ± 0.553.32 ± 0.48
Total physical activity (counts/min)654 ± 240724 ± 268577 ± 178*
Sedentary activity (min/day)315 ± 90307 ± 95323 ± 84
Light activity (min/day)287 ± 49278 ± 47296 ± 49*
Moderate and vigorous activity (min/day)177 ± 64195 ± 67157 ± 54
Fat mass (kg)9.10 ± 5.68.19 ± 5.610.1 ± 5.4
Fat mass (%)24.8 ± 9.421.9 ± 9.028.0 ± 8.8*
Trunk fat mass (kg)2.82 ± 2.52.39 ± 2.53.29 ± 2.5
Central fat mass (kg)0.67 ± 0.60.59 ± 0.50.77 ± 0.5
Glucose (mmol/l)5.2 ± 0.35.2 ± 0.35.2 ± 0.4
Insulin (μU/ml)6.1 ± 3.55.3 ± 2.87.0 ± 3.9*
HOMA-IR1.21 (1.10–1.32)1.09 (0.99–1.19)1.38 (1.26–1.50)*
  • Data are means ± SD or geometric means (95% CI).

  • *

    * P < 0.001 and

  • P < 0.05 for sex differences.