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Table 2 Time and interaction effects for LPA, MPA, VPA, total PA, and MVPA in boys and girls (adjusted for age)

From: The effect of a kindergarten-based, family-involved intervention on objectively measured physical activity in Belgian preschool boys and girls of high and low SES: the ToyBox-study

  Boys n = 260 (I = 168, C = 92) Girls n = 212 (I = 133, C = 79)
  PRE (%) POST (%) Time Time * condition PRE (%) POST (%) Time Time * Condition
     ß ß    ß ß
  LPA
Day I 47.8 46.8 −0.46 −0.64 45.7 45.1 −1.22 * 0.64
  C 46.2 45.7    45.5 44.3   
Weekday I 48.2 46.9 −0.78 −0.56 46.1 54.4 −1.64 ** 0.91
  C 46.9 46.1    46.1 44.5   
Weekend day I 46.4 46.3 0.42 −0.46 45.3 44.9 −0.73 0.34
  C 44.8 44.4    44.3 43.5   
School hours$ I 49.4 38.6 −1.21 *** −1.06 46.7 39.9 −1.33 *** 1.14 *
  C 47.5 39.5    46.1 34.6   
After school hours I 38.9 34.0 −5.20 *** 0.32 37.7 33.3 −6.63 *** 2.21
  C 37.9 32.7    37.7 31.1   
  MPA
Day§ I 5.7 6.4 1.04 1.09 5.5 6.1 0.42 * 0.17
  C 5.6 5.8    5.5 5.9   
Weekday§ I 5.5 6.2 1.05 1.08 5.5 6.0 0.32 0.19
  C 5.5 5.8    5.4 5.7   
Weekend day$ I 5.7 6.2 1.04 1.06 5.3 5.6 1.08 −1.03
  C 5.4 5.6    5.2 5.6   
School hours§ I 5.4 5.4 −1.06 1.06 5.4 5.6 −0.38 0.50
  C 5.5 5.2    5.4 5.0   
After school hours$ I 4.3 4.4 −1.14 1.18 4.3 3.9 −1.15 * 1.02
  C 4.2 3.7    4.4 3.8   
  VPA
Day$ I 1.7 2.1 1.14 * 1.10 1.7 2.3 1.19 ** 1.13
  C 1.8 2.0    1.9 2.3   
Weekday$ I 1.5 2.0 1.12 1.20* 1.6 2.0 1.22 ** 1.07
  C 1.5 1.7    1.7 2.1   
Weekend day$ I 1.9 2.2 1.19 1.00 1.9 2.6 1.14 1.18
  C 1.9 2.3    2.0 2.3   
School hours$ I 1.2 1.8 1.38 ** 1.08 1.4 1.9 1.48 *** −1.05
  C 1.2 1.7    1.4 2.1   
After school hours$ I 1.2 1.7 −1.02 1.47 ** 1.3 1.5 −1.01 1.13
  C 1.2 1.2    1.6 1.6   
  Total PA
Day I 55.7 55.9 0.17 −0.01 53.1 53.8 −0.34 1.01
  C 54.1 54.3    53.1 52.8   
Weekday I 55.8 55.8 −0.16 0.18 55.5 55.7 −0.86 1.15
  C 54.8 54.6    55.5 54.7   
Weekend day I 55.1 56.0 1.44 −0.49 53.3 53.9 0.36 0.32
  C 53.2 54.7    52.3 52.6   
School hours$ I 56.9 47.5 −1.15 *** −1.04 53.8 48.3 −1.24 *** 1.11 *
  C 55.2 47.9    53.2 42.9   
After school hours I 45.7 41.5 −5.12 ** 0.97 44.5 40.4 −7.15 *** 3.03
  C 44.7 39.6    44.9 37.8   
  MVPA
Day§ I 7.5 8.7 1.06 1.09 7.4 8.7 0.90 * 0.36
  C 7.4 7.9    7.6 8.5   
Weekday§ I 7.1 8.3 1.07 1.10 7.3 8.4 0.79 ** 0.25
  C 7.2 7.7    7.5 8.2   
Weekend day$ I 8.0 8.7 1.09 1.02 7.3 8.4 1.09 1.05
  C 7.5 8.2    7.4 8.0   
School hours$ I 6.8 7.7 1.05 1.07 6.5 7.2 1.07 1.04
  C 6.9 7.2    6.5 7.0   
After school hours$ I 5.6 6.5 −1.10 1.27 ** 5.9 5.8 −1.09 1.07
  C 5.7 5.2    6.2 5.7   
  1. *p < 0.10, **p < 0.05, ***p < 0.001.
  2. $Variable was log-transformed for both boys and girls.
  3. §Variable was log-transformed for boys.
  4. LPA = Light Physical Activity; MPA = Moderate Physical Activity; VPA = Vigorous Physical Activity; Total PA = Total Physical Activity; MVPA = Moderate- to Vigorous Physical Activity; I = Intervention group; C = Control group.