Table 1 Participant characteristics, descriptive statistics and contrasts between 296 boys and 356 girls.

Age (years)

10.92

.42

10.92

.40

10.91

.43

-.23 (609)

.82

-.02

SDQ¹ - Conduct problems

2.25

1.70

2.45

1.73

2.07

1.66

-2.85 (650)

.01

-.22

SDQ - Peer problems

1.91

1.74

1.97

1.83

1.88

1.69

-.61 (650)

.54

-.05

SDQ - Prosocial

7.99

1.70

7.52

1.78

8.38

1.54

6.50 (586.38⁴)

.00

.52

Social acceptance

3.05

.64

3.05

.65

3.06

.64

.18 (650)

.84

.02

Mean MVPA² per day (min)

35.82

17.43

42.23

19.22

30.28

13.30

-9.08 (509.60⁴)

.00

-.73

Mean CPM³ per day

543.75

168.07

592.27

173.22

501.56

150.66

-7.06 (589.13⁴)

.00

-.56

Mean MVPA after school per day (min)

10.13

6.65

11.63

7.54

8.82

5.46

-5.32 (516.44⁴)

.00

-.43

Mean CPM after school per day

663.33

322.68

700.40

329.49

630.98

314.17

-2.71 (633)

.01

-.22