| All | Girls | Boys | Sex difference | ||||||
---|---|---|---|---|---|---|---|---|---|---|
 | n | Mean | SD | n | Mean | SD | n | Mean | SD | P |
Background | Â | |||||||||
  Age (years) | 460 | 8.5 | 0.6 | 249 | 8.5 | 0.6 | 211 | 8.6 | 0.7 | 0.123 |
  BMI-z score | 458 | 0.75 | 1.25 | 248 | 0.67 | 1.22 | 210 | 0.84 | 1.29 | 0.156 |
  SESa | 460 | 3 | 2 | 249 | 3 | 2 | 211 | 3 | 2 | 0.879 |
FMS (raw) | Â | |||||||||
  Locomotor skills | 430 | 25.7 | 5.8 | 220 | 26.4 | 5.2 | 210 | 24.9 | 6.3 | 0.008* |
  Object-control skills | 456 | 24.2 | 6.2 | 247 | 21.9 | 5.3 | 209 | 26.8 | 6.0 | 0.000* |
Physical activity | Â | |||||||||
  Total daily MVPA minutes | 220 | 54.8 | 19.7 | 125 | 49.1 | 17.0 | 95 | 61.9 | 20.6 | 0.000* |
  Lunchtime MVPA minutes | 325 | 5.4 | 3.8 | 185 | 4.6 | 3.3 | 140 | 6.5 | 4.1 | 0.000* |
  Recess MVPA minutes | 325 | 5.8 | 4.4 | 185 | 4.8 | 4.1 | 140 | 7.0 | 4.5 | 0.000* |
  After-school MVPA minutes | 325 | 15.5 | 11.7 | 185 | 14.4 | 13.2 | 140 | 16.9 | 9.3 | 0.039* |