Table 2

Within-subject changes at preintervention and postintervention

 N*PrePostDifferencep
Mean (SD)Mean (SD)Mean (CI)
Anthropometry
 BMI (kg/m2)27422.5 (3.6)22.1 (3.7)−0.5 (−0.6 to −0.4)<0.0001
 BMI z-score2742.86 (0.90)2.66 (0.94)−0.20 (−0.23 to −0.17)<0.0001
 Waist circumference (cm)26770.9 (9.9)69.9 (10.0)−0.9 (−1.3 to −0.5)<0.0001
 Waist circumference z-score2673.16 (1.10)2.96 (1.14)−0.20 (−0.25 to −0.15)<0.0001
Psychosocial indices
 Child total difficulties score (range 0–40)21210.8 (5.7)9.2 (5.8)−1.6 (−2.2 to −0.9)<0.0001
 Play and enjoyment score (range 0–60)24048.6 (10.4)51.6 (9.1)3.1 (1.9 to 4.2)<0.0001
 Discipline and boundaries score (range 0–60)23542.0 (11.9)47.3 (9.7)5.3 (4.0 to 6.6)<0.0001
 Learning and knowledge score (range 0–60)23848.7 (9.2)51.1 (8.3)2.5 (1.3 to 3.7)<0.0001
Activity indices
 Sedentary activity (h/week)16821.6 (12.8)17.5 (10.8)−4.1 (−6.1 to −2.2)<0.0001
 Physical activity (h/week)16815.1 (8.8)18.0 (9.4)2.9 (1.2 to 4.7)<0.01
 TV time (h/week)16816.6 (10.9)13.2 (9.0)−3.4 (−5.0 to −1.8)<0.0001
  • *Numbers vary due to missing data and data cleaning procedures.

  • BMI, body mass index.