Table 3.
Pre‐Basic Combat Training Values for Bone Parameters in Trainees of Black, ORC, and White Race Adjusted for Age, Height, Weight, Sex, Physical Activity, and Tobacco Use
| Black versus ORC | Black versus white | ORC versus white | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Variable | Black (n = 398) mean (95% CI) | ORC (n = 306) mean (95% CI) | White (n = 865) mean (95% CI) | Mean difference (95% CI) | p | Mean difference (95% CI) | p | Mean difference (95% CI) | p |
| Tt.BMD (mg HA/cm3) | 280 (276, 284) | 263 (258, 267) | 253 (250, 256) | 17 (12, 23) | <0.001 | 27 (23, 32) | <0.001 | 10 (5, 15) | <0.001 |
| Tb.BMD (mg HA/cm3) | 219 (216, 222) | 210 (206, 214) | 204 (202, 207) | 9 (4, 14) | <0.001 | 15 (11, 19) | <0.001 | 6 (1, 10) | 0.011 |
| Tb.BV/TV (%) | 32.5 (32.1, 33.0) | 31.1 (30.5, 31.6) | 30.1 (29.8, 30.5) | 1.5 (0.7, 2.2) | <0.001 | 2.4 (1.8, 3.0) | <0.001 | 0.9 (0.3, 1.6) | 0.003 |
| Tb.Th (mm) | 0.247 (0.245, 0.248) | 0.239 (0.237, 0.241) | 0.234 (0.232, 0.235) | 0.008 (0.005, 0.010) | <0.001 | 0.013 (0.011, 0.015) | <0.001 | 0.005 (0.003, 0.008) | <0.001 |
| Tb.N (1/mm) | 1.72 (1.70, 1.74) | 1.75 (1.72, 1.77) | 1.79 (1.77, 1.80) | −0.03 (−0.06, 0.00) | 0.069 | −0.07 (−0.09, −0.04) | <0.001 | −0.04 (−0.07, −0.01) | 0.003 |
| Tb.Sp (mm) | 0.537 (0.530, 0.545) | 0.533 (0.524, 0.541) | 0.521 (0.515, 0.526) | 0.005 (−0.006, 0.016) | 0.375 | 0.017 (0.008, 0.026) | <0.001 | 0.012 (0.002, 0.021) | 0.015 |
| Ct.BMD (mg HA/cm3) | 836 (832, 840) | 808 (803, 813) | 798 (795, 801) | 27 (21, 34) | <0.001 | 37 (32, 42) | <0.001 | 10 (4, 15) | <0.001 |
| Ct.Ar (mm2) | 107 (106, 109) | 97 (95, 100) | 90 (89, 92) | 10 (7, 13) | <0.001 | 17 (15, 19) | <0.001 | 7 (5, 10) | <0.001 |
| Ct.Th (mm) | 0.964 (0.946, 0.983) | 0.859 (0.837, 0.882) | 0.789 (0.775, 0.803) | 0.105 (0.077, 0.134) | <0.001 | 0.176 (0.153, 0.198) | <0.001 | 0.070 (0.045, 0.095) | <0.001 |
Abbreviation: Ct.Ar = cortical area; Ct.Th = cortical thickness; Ct.BMD = cortical volumetric bone mineral density; ORC = other races combined; Tb.BMD = trabecular volumetric bone mineral density; Tb.BV/TV = trabecular bone volume/total volume; Tb.N = trabecular number; Tb.Sp = trabecular separation; Tb.Th = trabecular thickness; Tt.BMD = total volumetric bone mineral density.