Table 2 Baseline data and twelve-month changes, evaluating the effects of school transportation mode. Anthropometrics, bone mineral content (BMC) and bone width are included. Data are presented as means (SD).

Age (yrs)

7.8 (0.6)

7.7 (0.6)

0.42

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----

----

7.9 (0.6)

7.9 (0.6)

0.83

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----

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Weight (kg)

27.5 (5.4)

27.3 (5.3)

0.90

3.3 (1.7)

3.5 (2.1)

0.60

28.0 (5.4)

28.2 (6.1)

0.89

3.3 (1.2)

3.1 (1.9)

0.43

Height (cm)

128.6 (6.9)

128.8 (6.3)

0.87

5.8 (1.0)

5.9 (1.2)

0.50

130.0 (6.9)

129.2 (6.3)

0.52

5.7 (0.8)

5.5 (1.0)

0.20

Lean mass (kg)

20.1 (2.6)

20.0 (2.4)

0.84

2.1 (0.7)

2.0 (0.7)

0.48

22.0 (3.1)

21.5 (3.0)

0.32

2.3 (0.5)

2.1 (0.6)

0.06

Fat mass (kg)

5.1 (3.6)

5.2 (3.1)

0.98

1.4 (1.2)

1.6 (1.6)

0.54

3.9 (3.0)

4.3 (3.7)

0.50

1.1 (1.0)

1.3 (1.6)

0.50

BMC (g)

L2–L4

15.4 (3.0)

15.3 (3.5)

0.89

2.0 (0.9)

2.2 (1.2)

0.36

16.1 (2.9)

15.9 (3.7)

0.73

2.2 (1.1)

2.4 (1.2)

0.28

Third lumbar vertebra

5.1 (1.0)

5.2 (1.3)

0.87

0.69 (0.4)

0.78 (0.7)

0.41

5.5 (1.0)

5.3 (1.3)

0.36

0.70 (0.6)

0.88 (0.7)

0.12

Femoral neck

2.6 (0.7)

2.6 (0.5)

0.68

0.29 (0.7)

0.37 (0.5)

0.57

2.9 (0.7)

2.9 (0.7)

0.53

0.32 (0.4)

0.26 (0.4)

0.42

Ward

1.2 (0.5)

1.1 (0.5)

0.65

0.17 (0.6)

0.19 (0.5)

0.85

1.3 (0.5)

1.3 (0.4)

0.47

0.17 (0.3)

0.15 (0.3)

0.68

Trochanter

2.7 (1.3)

2.6 (0.9)

0.83

0.66 (0.9)

0.66 (0.9)

0.97

2.8 (1.5)

2.7 (1.2)

0.63

0.55 (0.7)

0.48 (0.7)

0.56

Width (cm)

Third lumbar vertebra

2.89 (0.27)

2.88 (0.23)

0.88

0.12 (0.10)

0.13 (0.11)

0.70

3.11 (0.23)

3.03 (0.30)

0.13

0.10 (0.11)

0.13 (0.16)

0.16

Femoral neck

2.47 (0.29)

2.43 (0.26)

0.42

0.13 (0.28)

0.13 (0.25)

0.95

2.50 (0.25)

2.45 (0.21)

0.23

0.14 (0.15)

0.11 (0.18)

0.38