Table 1 Physical activity measures at 6–10 years and 11–13 years*

n = 140

n = 150

p^§

n = 175

n = 194

p^§

Counts/ day (× 10³)

448 ± 128

381 ± 110

< 0.01

418 ± 144

296 ± 101

< 0.01

Registered Time (min/d)

798 ± 81

783 ± 77

0.11

778 ± 86

760 ± 74

0.03

Sedentary (% of RT) ^†

40.7 ± 9.6

42.6 ± 9.5

0.51

47.9 ± 11.1

53.6 ± 10.0

< 0.01

Light physical activity (% of RT)^†

53.0 ± 8.3

52.8 ± 8.7

0.38

46.2 ± 9.6

43.2 ± 9.2

< 0.01

Moderate physical activity (% of RT)^†

5.0 ± 2.2

3.6 ± 1.7

< 0.01

4.7 ± 2.5

2.8 ± 1.6

< 0.01

Vigorous physical activity (% RT)^†

1.1 (0.5, 2.0)

0.8 (0.4,1.3)

< 0.01

0.8 (0.4,1.7)

0.3 (0.1,0.6)

< 0.01