Table 2

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

*p < 0.10, **p < 0.05, ***p < 0.001.

$Variable was log-transformed for both boys and girls.

§Variable was log-transformed for boys.

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.

De Craemer et al.

De Craemer et al. International Journal of Behavioral Nutrition and Physical Activity 2014 11:38   doi:10.1186/1479-5868-11-38

Open Data