Table 1 Children’s baseline characteristics

 Age (years)

10.2 (0.3)

10.2 (0.3)

10.2 (0.3)

.803

 Body mass (kg)

37.0 (8.1)

36.8 (7.8)

37.2 (8.3)

.641

 Height (cm)

142.9 (6.7)

143.1 (6.7)

142.6 (6.8)

.197

 BMI (kg/m²)

18.0 (3.0)

17.9 (2.9)

18.1 (3.1)

.218

 Overweight and obese (%)

20.8

20.0

21.5

.583

 Waist circumference (cm)

61.9 (7.5)

62.2 (7.3)

61.6 (7.7)

.169

 Waist:height (ratio)

0.43 (0.05)

0.43 (0.05)

0.43 (0.05)

.322

 Andersen test (m)

898 (103)

925 (112)

871 (85)

< .001

 Systolic blood pressure (mmHg)

105.2 (8.4)

105.3 (8.2)

105.2 (8.6)

.612

 Diastolic blood pressure (mmHg)

57.7 (6.2)

57.4 (6.0)

58.1 (6.3)

.180

 Total cholesterol (mmol/l)

4.46 (0.69)

4.46 (0.70)

4.46 (0.68)

.976

 LDL cholesterol (mmol/l)

2.51 (0.64)

2.50 (0.65)

2.53 (0.62)

.570

 HDL cholesterol (mmol/l)

1.59 (0.35)

1.63 (0.34)

1.55 (0.35)

.001

 Total:HDL cholesterol (ratio)

2.91 (0.71)

2.82 (0.66)

2.99 (0.74)

.001

 Triglyceride (mmol/l)

0.78 (0.38)

0.72 (0.31)

0.84 (0.42)

< .001

 Glucose (mmol/l)

4.98 (0.32)

5.02 (0.31)

4.94 (0.33)

.001

 Insulin (pmol/l)

55.0 (29.8)

48.9 (24.1)

61.1 (33.6)

< .001

 HOMA (index)

1.71 (0.98)

1.54 (0.83)

1.89 (1.09)

< .001

 Composite score (1SD)^a

0.00 (1.00)

0.00 (0.93)

0.00 (1.07)

–

 Wear time (min/day)

795 (57)

799 (59)

791 (54)

.038

 Overall (cpm)

707 (271)

754 (296)

660 (235)

< .001

 SED (min/day)

490 (60)

488 (63)

492 (57)

.018

 LPA (min/day)

231 (38)

230 (40)

233 (37)

.022

 MPA (min/day)

44 (13)

47 (13)

40 (11)

< .001

 VPA (min/day)

31 (16)

34 (17)

27 (12)

< .001

 MVPA (min/day)

74 (25)

81 (27)

67 (21)

< .001

 Guideline amount (%)^c

69

77

61

< .001