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Table 3 Longitudinal changes in bone biomarkers in female Soldiers during BCT*

From: Vitamin D status, dietary intake, and bone turnover in female Soldiers during military training: a longitudinal study

 

Baseline

Wk 3

Wk 6

Wk 9

Effect

Bone Absorption Biomarkers

BAP, μg/L

    

T

Group (n = 71)

27.6 ± 1.6

36.6 ± 1.9

39.1 ± 1.9

38.8 ± 2.0

 

White (n = 45)

26.2 ± 2.3

33.9 ± 2.4

37.1 ± 2.3

36.9 ± 2.3

 

Non-white (n = 26)

29.9 ± 3.0

41.1 ± 3.1

42.9 ± 3.1

42.0 ± 3.0

 

PINP, μg/L

    

T

Group (n = 71)

62.4 ± 3.7

75.1 ± 3.8†

78.7 ± 3.8†

78.7 ± 3.7†

 

White (n = 45)

62.9 ± 4.5

72.5 ± 4.6

75.1 ± 4.5

77.7 ± 4.5

 

Non-white (n = 26)

61.9 ± 5.9

77.7 ± 6.0

82.4 ± 6.0

79.8 ± 5.9

 

Bone Resorption Biomarkers

TRAP, U/L

    

T

Group (n = 71)

4.3 ± 0.2

4.6 ± 0.2

4.8 ± 0.2†

5.0 ± 0.2†, ‡

 

White (n = 45)

4.2 ± 0.2

4.7 ± 0.2

4.8 ± 0.2

5.0 ± 0.2

 

Non-white (n = 26)

4.5 ± 0.3

4.4 ± 0.3

4.8 ± 0.3

5.0 ± 0.3

 

CTx, μg/L

    

T

Group (n = 71)

1.1 ± 0.1

1.0 ± 0.1

1.2 ± 0.1

1.2 ± 0.1‡

 

White (n = 45)

1.2 ± 0.1

1.1 ± 0.1

1.1 ± 0.1

1.2 ± 0.1

 

Non-white (n = 26)

1.0 ± 0.1

1.0 ± 0.1

1.2 ± 0.1

1.1 ± 0.1

 
  1. *Mean ± SEM; †Different from baseline (P < 0.05); ‡Different from week 3 (P < 0.05); T, main effect of time (P < 0.05).