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Table 2 Bone properties of the study groups (mean ± SD).

From: Discordant effect of body mass index on bone mineral density and speed of sound

  Overweight (n = 22) Lean (n = 11)
Lumbar spine   
   Bone mineral content (gr) 37.27 ± 7.09 35.83 ± 5.22
   Bone area (cm2) 40.72 ± 4.53 42.94 ± 3.70
   Bone mineral density (Z score) -0.17 ± 1.11 -0.63 ± 1.27
Femoral neck   
   Bone mineral content (gr) 3.72 ± 0.71 2.92 ± 0.37*
   Bone area (cm2) 4.72 ± 0.71 4.75 ± 0.35
   Bone mineral density (Z score) 0.70 ± 0.82 -0.99 ± 0.52**
RAD   
   SOS (Z score) 0.24 ± 1.29 0.70 ± 1.20
   PLX   
   SOS (Z score) -0.07 ± 1.65 -0.70 ± 1.36
TIB   
   SOS (Z score) -0.45 ± 1.50 0.31 ± 1.48
  1. *P < 0.005, **P < 0.0001, RAD = radius. PLX = phalanx, TIB = tibia, SOS = speed of sound