Table 2 Descriptive characteristics of the study population and physical activity variables

Sex

438 (51.5%)

412(48.5%)

Age at 1^st SDQ^a

5.89 (± 0.39)

5.87 (± 0.38)

0.672

Age at 2^nd SDQ^b

10.63 (± 0.55)

10.50 (± 0.54)

0.402

Age at physical activity measurement

5.11 (± 0.89)

5.09 (± 0.92)

0.059

BMI at age 10–11

17.41 (± 2.41)

17.65 (± 2.48)

0.107

Number of adults in the household

 1

6 (0.7%)

8 (0.9%)

 2

421 (49.8%)

389 (46.0%)

 3

0

2 (0.2%)

 4

2 (0.2%)

0

Number of children in the household

 1

156 (18.4%)

156 (18.4%)

 2

195 (23.0%)

167 (19.7%)

 3

70 (8.3%)

63 (7.4%)

 4

11 (1.3%)

16 (1.9%)

 5

4 (0.5%)

4 (0.5%)

 6

0

1 (0.1%)

Maternal education^c

 1

195 (23.6%)

172 (20.8%)

 2

136 (16.4%)

129 (15.6%)

 3

97 (11.7%)

98 (11.9%)

physical activity variables

Median [P25, P75]/Mean (± SD)

Median [P25, P75]/Mean (± SD)

physical activity volume (cpm)

1362.40 [1209.10, 1575.16]

1249.40 [1079.65, 1457.77]

< 0.001

Total wear time (min)

701.31 [680.55, 724.00]

699.56 [673.59, 725.64]

0.060

Sedentary time (min)

368.00 [329.51, 402.47]

377.63 [340.46, 413.00]

0.004

LPA (min)

264.00 (± 36.39)

265.81 (± 40.00)

0.050

MPA (min)

47.17 [39.53, 60.07]

40.08 [31.39, 49.32]

< 0.001

VPA (min)

18.50 [12.46, 26.44]

14.50 [10.50, 21.92]

< 0.001

MVPA (min)

68.13 [53.03, 85.64]

54.44 [42.13, 71.82]

< 0.001