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Table 4 Body composition of healthy women split into two groups based on the Index of Lean Mass (ILM)

From: Influence of lean and fat mass on bone mineral density and on urinary stone risk factors in healthy women

  Group A Group B p (*) p critical values (0.0029 < p < 0.0025)
Low lean mass High lean mass
ILM < 1296 ILM > 1296
N. 39 N. 39
ILM 1035 ± 205 1625 ± 313 <0.0001 ###
Age, years 46 ± 6 46 ± 6 0.956  
Menopausal, n., % (°) 11 (28) 8 (21) 0.590**  
Years from menopause 1.4 ± 3 0.9 ± 2 0.416  
Weight, Kg 65 ± 10 68 ± 11 0.268  
Height, cm 159 ± 6 163 ± 5 <0.0001 ###
BMI, Kg/m2 26 ± 4 25 ± 4 0.612  
Total trunk mass, Kg 31 ± 5 32 ± 6 0.289  
Total lower limb mass, Kg 22 ± 4 23 ± 4 0.460  
Total lean mass, Kg 40 ± 4 45 ± 5 <0.0001 ###
Total fat mass, Kg 23 ± 6 21 ± 7 0.07  
BMD upper limbs, g/cm2 0.72 ± 0.04 0.76 ± 0.08 0.003 ###
BMD ribs, g/cm2 0.64 ± 0.08 0.68 ± 0.07 0.035  
BMD lower limbs, g/cm2 1.10 ± 0.07 1.15 ± 0.1 0.026  
BMD pelvis, g/cm2 1.20 ± 0.15 1.24 ± 0.18 0.307  
BMD lumbar vertebrae, g/cm2 1 ± 0.13 1.04 ± 0.15 0.217  
BMD femur, g/cm2 0.91 ± 0.12 0.95 ± 0.11 0.232  
T-score lumbar vertebrae (+) −0.17 (−2.50 – 2.31) −0.45 (−2.54 – 2.87) 0.442***  
Z-score lumbar vertebrae (+) 0.41 (−1.92 – 2.73) 0.34 (−1.49 – 3.21) 0.407***  
T-score femur (+) −0.16 (−1.92 – 2.07) −0.09 (−1,50 – 1.52) 0.165***  
Z-score femur (+) 0.27 (−1.52 – 2.43) 0.37 (−1.27 – 1.93) 0.225***  
  1. Data were reported as mean ± standard deviation (SD), unless otherwise specified.
  2. °Data were reported as number of subjects (frequency).
  3. +Data were reported as median and range.
  4. *p value was calculated with nondependent Student’s t test, unless otherwise specified.
  5. **χ2 test was applied to evaluate p value.
  6. ***Mann-Whithey’s u-test was applied to evaluate p value.
  7. ###Significant differences with p adjusted by Holm’s test.
  8. BMD: Bone Mineral Density.