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Table 2 Maturity-related differences in anthropometry and body composition in adolescent boys

From: Influence of maturation on anthropometry and body composition in Japanese junior high school students

 

PH1

PH2

PH3

PH4

PH5

Post hoc test

 

(n = 11)

(n = 35)

(n = 19)

(n = 24)

(n = 25)

(P < 0.05)

Age (years)

13.2 ± 0.2

13.4 ± 0.2

13.4 ± 0.3

13.5 ± 0.2

13.5 ± 0.3

PH < PH4,PH5

Height (cm)

147.4 ± 8.8

151.4 ± 6.4

157.1 ± 7.4

162.4 ± 4.7

165.4 ± 4.7

PH1, PH2 < PH3-5

PH3 < PH4-5,

PH4 < PH5

Weight (kg)

41.0 ± 10.0

41.5 ± 6.7

48.3 ± 8.9

51.8 ± 7.9

54.5 ± 4.8

PH1, PH2 < PH4, PH5

PH2 < PH3,

PH3 < PH5

PH2 < 5

BMI (kg/m2)

18.77 ± 2.7

18.0 ± 2.2

19.5 ± 3.3

19.6 ± 2.5

20.0 ± 1.8

 

% Fat (%)

16.0 ± 6.7

13.9 ± 6.5

17.7 ± 11.2

17.0 ± 8.0

18.3 ± 5.7

 

LBM (kg)

33.9 ± 5.0

35.4 ± 4.0

39.0 ± 4.6

42.4 ± 3.2

44.4 ± 3.1

PH1, PH2 < PH3-5

PH3 < PH5

CTHIGH (cm)

43.1 ± 5.3

42.3 ± 3.7

45.4 ± 4.8

46.7 ± 4.2

47.4 ± 2.5

PH1,PH2 < PH3-5

PH1 < PH5

CLOWER (cm)

32.0 ± 3.6

31.5 ± 2.5

33.8 ± 2.8

34.5 ± 2.2

34.9 ± 1.8

PH1, PH2 < PH5

PH2 < PH3, PH4

Muscle thickness (cm)

      

Anterior thigh

4.3 ± 0.6

4.2 ± 0.6

4.5 ± 0.5

4.8 ± 0.4

4.7 ± 0.4

PH2 < PH4, PH5

Posterior of lower leg

5.9 ± 0.6

5.8 ± 0.4

6.4 ± 0.5

6.4 ± 0.4

6.5 ± 0.5

PH1, PH2 < PH5

PH2 < PH3, PH4

Rectus abdominis

1.0 ± 0.2

0.9 ± 0.1

1.1 ± 0.2

1.2 ± 0.2

1.3 ± 0.2

PH1-3 < PH5

PH2 < PH4

Muscle thickness per LBM1/3 (cm/kg1/3)

      

Anterior of lower leg

1.31 ± 0.13

1.27 ± 0.16

1.32 ± 0.16

1.37 ± 0.10

1.32 ± 0.21

 

Posterior of lower leg

1.82 ± 0.12

177 ± 0.10

1.89 ± 0.14

1.83 ± 0.09

1.84 ± 0.12

 

Rectus abdominis

0.31 ± 0.04

0.29 ± 0.04

0.32 ± 0.04

0.33 ± 0.04

0.36 ± 0.06

PH2 < PH4, PH5

  1. Values are expressed as mean ± SD. Age, chronological age; BMI, body mass index;% Fat, percent body fat; LBM, lean body mass; CTHIGH, circumference of thigh; CLOWER, circumference of lower leg; PH, stage of pubic hair development.