Table 1c. Subject Characteristics: Proximal Femur Unadjusted Means (Standard Deviations).
| Variable | Total Sample | M1 | M2 | M3 | ||||
|---|---|---|---|---|---|---|---|---|
| GYM (n=96) |
NON (n=77) |
GYM (n=26) |
NON (n=20) |
GYM (n=49) |
NON (n=31) |
GYM (n=21) |
NON (n=26) |
|
| FN Area (cm2) | 3.95 (0.37) | 4.18 (0.40) | 3.68 (0.28) | 3.83 (0.31) | 3.96 (0.31) | 4.18 (0.36) | 4.26 (0.34) | 4.44 (0.27) |
| FN BMC (g) | 3.24 (0.75) | 3.25 (0.83) | 2.59 (0.41) | 2.37 (0.40) | 3.18 (0.50) | 3.17 (0.62) | 4.21 (0.58) | 4.01 (0.56) |
| FN aBMD (g/cm2) | 0.815 (0.140) | 0.768 (0.141) | 0.704 (0.087) | 0.618 (0.076) | 0.802 (0.105) | 0.753 (0.094) | 0.986 (0.098) | 0.900 (0.096) |
| NN aBMD (g/cm2) | 0.977 (0.179) | 0.912 (0.181) | 0.839 (0.107) | 0.726 (0.089) | 0.957 (0.135) | 0.891 (0.135) | 1.195 (0.133) | 1.079 (0.122) |
| NN Width (cm) | 2.46 (0.24) | 2.63 (0.24) | 2.25 (0.20) | 2.45 (0.18) | 2.49 (0.19) | 2.63 (0.25) | 2.63 (0.20) | 2.78 (0.17) |
| NN CT (cm) | 0.19 (0.04) | 0.18 (0.04) | 0.17 (0.02) | 0.14 (0.02) | 0.19 (0.03) | 0.17 (0.03) | 0.24 (0.03) | 0.21 (0.03) |
| NN ED (cm) | 2.07 (0.22) | 2.28 (0.21) | 1.92 (0.20) | 2.17 (0.18) | 2.11 (0.20) | 2.28 (0.25) | 2.16 (0.22) | 2.36 (0.16) |
| NN bCSA (cm2) | 2.30 (0.54) | 2.31 (0.60) | 1.80 (0.31) | 1.70 (0.26) | 2.26 (0.35) | 2.23 (0.45) | 3.00 (0.40) | 2.87 (0.42) |
| NN Z (cm3) | 0.89 (0.28) | 0.91 (0.32) | 0.63 (0.17) | 0.60 (0.13) | 0.88 (0.18) | 0.85 (0.25) | 1.23 (0.22) | 1.21 (0.24) |
| NN BR | 6.75 (1.37) | 8.10 (1.82) | 7.20 (1.05) | 9.49 (1.60) | 6.94 (1.51) | 8.25 (1.86) | 5.76 (0.88) | 6.86 (0.89) |
| NN CSMI (cm4) | 1.15 (0.46) | 1.28 (0.54) | 0.75 (0.25) | 0.79 (0.21) | 1.13 (0.30) | 1.19 (0.43) | 1.69 (0.42) | 1.75 (0.44) |
| NN HAL (mm) | 94.4 (9.3) | 96.2 (8.6) | 85.8 (8.9) | 89.4 (7.6) | 95.5 (6.3) | 94.9 (8.0) | 102.4 (7.3) | 102.8 (4.5) |
| NN Shaft-Neck Angle (°) | 130.1 (4.7) | 132.9 (5.0) | 129.1 (5.2) | 132.6 (6.0) | 130.1 (4.5) | 134.3 (4.3) | 131.1 (4.5) | 131.2 (4.5) |
FN= Femoral Neck; Area= uncorrected bone projected area; BMC= uncorrected bone mineral content; aBMD= uncorrected areal bone mineral density; NN= narrow neck; CT= cortical thickness; ED= endosteal diameter; bCSA= bone tissue cross-sectional area (excluding soft tissue within the periosteal compartment); Z= section modulus; BR= buckling ratio; CSMI= cross-sectional moment of inertia; HAL= hip axis length; SN Angle= shaft neck angle.