Table 2 Body measurements in early school-aged children

Age (years)

7.2 (6.8–7.5)

7.8 (6.0-7.9)

0.801

Weight (kg)

20.8 (19.5–24.8)

23.0 (19.9–26.9)

0.028

Weight-for-age z-score

-0.8 (-1.3-0.1)

0.0 (-0.8-0.9)

0.001

Change in weight-for-age z-score

1.4 (0.2–2.8)

0.2 (-0.4-0.9)

< 0.001

Height-for-age z-score

-0.3 (-1.0-0.1)

0.2 (-0.2-0.9)

< 0.001

BMI (kg/m²)

15.0 (13.9–15.9)

15.5 (14.6–16.9)

0.003

BMI-for-age z-score

-0.5 (-1.5-0.2)

-0.3 (-1-0.5)

0.072

Lean body mass (kg)

18.4 (16.9–20.2)

19.2 (17.1–21.2)

0.180

Lean mass index (kg/m²)

12.6 (12.0-13.1)

12.9 (12.3–13.4)

0.091

Fat mass (kg)

3.1 (2.1–4.1)

4.1 (2.8–5.8)

0.002

Fat mass index (kg/m²)

2.1 (1.6–2.9)

2.8 (1.9–3.9)

0.002

Waist circumference (cm)

51.6 (49.0-54.3)

53.8 (50.0–57.0)

0.013

Calorie intake (kcal/day)

1537 (1345.9-1709.4)

1441 (1299.4-1588.1)

0.114

Moderate or more activity^a

120 (20–320)

180 (70–300)

0.140

Walking time^a

120 (30–210)

120 (60–210)

0.403