Table 1 Subject demographic.

From: Assessment of total and regional bone mineral density using bioelectrical impedance vector analysis in elderly population

 

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) **

  1. PhA phase angle, BF% percentage body fat.
  2. *p < 0.05.
  3. **p < 0.001.
  4. aData are expressed as mean ± standard deviation (min, max).
  5. bZ, impedance, R, resistance, Xc, reactance, R/H, resistance standardized for height, Xc/H, reactance standardized for height.
  6. cSubscript total, L2–L4, and DFN denote whole body, AP spine L2–L4, and dual femur neck, respectively.
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