5.0-year

5.5-year

6.0-year

6.5-year

Two-way ANOVA (group × age)

Group

Age

Interaction

Boys

Age

Barefoot group

Mean

5.2

5.7

6.2

6.7

F

1.15

1411.98

0.73

S.D.

0.1

0.1

0.1

0.1

p

0.28

0.00*

0.53

Non barefoot group

Mean

5.2

5.7

6.2

6.7

S.D.

0.2

0.1

0.1

0.1

Height

Barefoot group

Mean

107.2

110.2

113.9

116.4

F

0.00

35.59

0.53

(cm)

S.D.

4.9

4.2

4.7

4.3

p

0.96

0.00*

0.66

Non barefoot group

Mean

105.8

109.7

114.4

117.7

S.D.

16.9

4.3

4.8

4.6

Body mass

Barefoot group

Mean

17.3

18.4

20.0

20.7

F

11.08

26.93

0.39

(kg)

S.D.

1.9

2.2

3.1

2.2

p

0.00*

0.00*

0.76

Non barefoot group

Mean

18.5

19.2

20.5

21.9

S.D.

2.1

2.4

2.3

3.1

Girls

Age

Barefoot group

Mean

5.2

5.7

6.2

6.7

F

0.03

1609.82

0.21

S.D.

0.1

0.1

0.1

0.1

p

0.87

0.00*

0.89

Non barefoot group

Mean

5.2

5.7

6.2

6.6

S.D.

0.2

0.1

0.1

0.1

Height

Barefoot group

Mean

106.3

110.1

113.3

116.0

F

0.26

76.83

1.47

(cm)

S.D.

4.2

4.2

4.7

4.2

p

0.61

0.00*

0.22

Non barefoot group

Mean

107.0

108.5

114.3

116.9

S.D.

4.0

5.3

3.3

4.4

Body mass

Barefoot group

Mean

16.9

18.2

19.3

20.5

F

15.84

31.93

0.78

(kg)

S.D.

2.1

1.9

2.7

2.5

p

0.00*

0.00*

0.51

Non barefoot group

Mean

18.5

18.7

20.4

21.9

S.D.

1.7

2.9

2.2

2.6