TABLE 2

Bone-Density Measures for Athletes With Amenorrhea, Athletes With Eumenorrhea, and Control Subjects

Athletes With Amenorrhea (N = 21)Athletes With Eumenorrhea (N = 18)Control Subjects (N = 18)P
Lumbar BMD, mean ± SD, g/cm20.90 ± 0.11a0.99 ± 0.090.96 ± 0.09.01
Lumbar BMD z score, mean ± SD−0.76 ± 0.85a,b−0.11 ± 0.87−0.10 ± 0.65.02
Lumbar BMAD, mean ± SD, g/cm30.143 ± 0.015c0.153 ± 0.0140.154 ± 0.017.045
Lumbar BMAD z score, mean ± SD−0.85 ± 0.80a,b−0.06 ± 0.84−0.23 ± 0.96.02
Lumbar BA for height z score, mean ± SD−0.08 ± 0.880.08 ± 1.100.16 ± 0.97NS
Lumbar BMC for BA z score, mean ± SD0.16 ± 0.67a0.86 ± 0.840.54 ± 0.91.03
Hip BMD, mean ± SD, g/cm20.89 ± 0.10a1.00 ± 0.100.96 ± 0.09.004
Hip BMD z score, mean ± SD−0.43 ± 0.75a0.28 ± 1.0−0.00 ± 0.80.04
WB BMD, mean ± SD, g/cm20.98 ± 0.07a,c1.05 ± 0.081.03 ± 0.07.01
WB BMD z score, mean ± SD−0.58 ± 0.72a,c0.10 ± 1.000.04 ± 0.74.02
WB BMC/height, mean ± SD, g/cm10.97 ± 1.35a,b12.33 ± 1.1712.01 ± 1.17.003
WB BMC/height z score, mean ± SD−0.79 ± 0.54b−0.41 ± 0.71−0.34 ± 0.50.04
WB BA for height z score, mean ± SD−0.06 ± 0.97a,c0.74 ± 0.94a0.60 ± 0.86.02
WB BMC for BA z score, mean ± SD−0.44 ± 1.140.34 ± 1.25−0.15 ± 1.13NS
PINP level, mean ± SD, μg/L102.7 ± 69.7b135.6 ± 73.7205.6 ± 143.9.01
N-telopeptide level, mean ± SD, nmol of bone collagen equivalent139.4 ± 119.8b173.2 ± 128.1295.7 ± 293.1.05
  • NS indicates not significant.

  • a P < .05, compared with athletes with eumenorrhea (Tukey-Kramer test to adjust for multiple comparisons).

  • b P < .05, compared with control subjects.

  • c P < .1, compared with control subjects.