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Table 2 Longitudinal changes in serum 25(OH)D and PTH levels 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

25(OH)D, nmol/L

    

T x R

Group (n = 71)

64.1 ± 3.8

60.4 ± 2.9

60.7 ± 2.6

63.2 ± 2.6

 

White (n = 45)

77.0 ± 3.5

70.6 ± 3.5†

68.6 ± 3.5†

70.5 ± 3.5

 

Non-white (n = 26)

41.7 ± 4.6§

42.6 ± 4.6§

47.8 ± 4.6§

50.6 ± 4.6‡,§

 

PTH, pg/mL

    

T, R

Group (n = 71)

32.7 ± 1.7

40.0 ± 1.7†

43.8 ± 1.8†

42.3 ± 2.2†

 

White (n = 45)

31.9 ± 2.3

36.7 ± 2.3

39.7 ± 2.3

38.6 ± 2.3

 

Non-white (n = 26)

34.0 ± 3.0

45.7 ± 3.1

50.7 ± 3.0

48.8 ± 3.0

 
  1. *Mean ± SEM; † Different from baseline (P < 0.05); ‡Different from week 3 (P < 0.05); §Different from white, (P < 0.05); T, main effect of time (P < 0.05); R, main effect of race (P < 0.05); T x R, time-by-race interaction (P < 0.05).