Journal
JOURNAL OF BONE AND MINERAL METABOLISM
Volume 21, Issue 1, Pages 17-21Publisher
SPRINGER-VERLAG TOKYO
DOI: 10.1007/s007740300003
Keywords
bone mineral density; lean body mass; body fat mass; males
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We investigated the relative contribution of lean body mass (LBM) and body fat mass to bone mineral density (BMD) in 93 healthy Japanese male volunteers (mean age, 33.1 +/- 6.9 years; range, 18-54 years). Age, height (Ht), weight (Wt), and body mass index (BMI, Wt/Ht(2)) were recorded. Body fat mass, percentage of body fat, body fat mass/Ht(2), LBM, LBM/Wt, LBM/Ht(2), and lumbar spine (L2-L4) and total body BMD (TBBMD) were measured by dual-energy X-ray absorptiometry. On the Pearson correlation test, LBM was positively correlated with L2-L4 BMD. LBM, LBM/Wt, and LBM/Ht(2) were positively correlated with TBBMD. However, body fat mass and body fat mass/Ht(2) were not correlated with lumbar spine and total body BMD. On the partial correlation test, LBM was still correlated with lumbar spine (r = 0.307, P < 0.05) and total body BMD (r = 0.545, P < 0.0001), irrespective of age and height, whereas body fat mass was not correlated with BMD of these sites (r = -0.069 and -0.169, respectively). We concluded that, in males, LBM is one of the significant determinants of BMD whereas body fat mass is a negligible BMD determinant.
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