Table 1.
Subject demographic.
| Total (n = 125) | Female (n = 64) | Male (n = 61) | |
|---|---|---|---|
| Age (year) | 65.97 ± 4.84 (60.0, 83.4) | 66.67 ± 5.63 (60.0, 83.4) | 65.22 ± 3.72 (60.7, 74.5) |
| Height (m) | 1.58 ± 0.10(1.43, 1.83) | 1.52 ± 0.05 (1.43, 1.66) | 1.66 ± 0.09 (1.50, 1.83)** |
| Weight (kg) | 65.76 ± 16.25 (39.70, 105.8) | 58.60 ± 12.66 (39.70, 93.42) | 73.54 ± 16.21 (43.80, 105.8)** |
| BMI (kg/m2) | 25.85 ± 4.73 (16.48, 41.60) | 25.44 ± 5.49 (16.48, 41.60) | 26.29 ± 3.75 (19.47, 34.2) |
| Z (ohm) | 527.1 ± 95.5 (373.9, 765.9) | 589.33 ± 65.2 (454.2, 765.9) | 459.6 ± 75.4 (373.9, 739.5)** |
| R (ohm) | 524.2 ± 95.6 (370, 762) | 586.4 ± 65.0 (452.0, 762.0) | 456.7 ± 75.5 (370.0, 737.0)** |
| Xc (ohm) | 54.4 ± 8.1 (40, 77) | 57.85 ± 7.86 (40.0, 77.0) | 50.67 ± 6.50 (41.0, 62.0)** |
| R/H (ohm/m) | 333.6 ± 73.6 (226.8, 508.0) | 386.47 ± 42.07 (297.4, 508.0) | 276.22 ± 55.04 (226.8, 491.3)** |
| Xc/H (ohm/m) | 34.5 ± 6.0 (23.3, 51.3) | 38.1 ± 5.7 (26.9, 51.3) | 30.6 ± 4.3 (23.3, 40.7)** |
| PhA (°) | 6.04 ± 0.91 (4.41, 8.97) | 5.65 ± 0.62 (4.41, 7.0) | 6.42 ± 1.01 (4.73, 9.0)** |
| BF% (%) | 38.2 ± 10.3 (17.1, 56.1) | 45.2 ± 7.5 (25.5, 56.1) | 30.7 ± 7.1 (17.1, 43.1)** |
| BMDTotal (g/cm2) | 1.19 ± 0.14 (0.92, 1.60) | 1.11 ± 0.09 (0.92, 1.41) | 1.28 ± 0.14 (1.00, 1.60)** |
| BMDL2–L4 (g/cm2) | 1.26 ± 0.19 (0.93, 1.72) | 1.18 ± 0.14 (0.93, 1.65) | 1.35 ± 0.20 (0.97, 1.72)** |
| BMDDFN (g/cm2) | 0.99 ± 0.18 (0.66, 1.480) | 0.89 ± 0.11 (0.66, 1.28) | 1.10 ± 0.17 (0.76, 1.48) ** |
PhA phase angle, BF% percentage body fat.
*p < 0.05.
**p < 0.001.
aData are expressed as mean ± standard deviation (min, max).
bZ, impedance, R, resistance, Xc, reactance, R/H, resistance standardized for height, Xc/H, reactance standardized for height.
cSubscript total, L2–L4, and DFN denote whole body, AP spine L2–L4, and dual femur neck, respectively.