The relationship between body composition and bone mineral density in postmenopausal Turkish women
In a retrospective cross-sectional study among 202 postmenopausal women aged 46–75 years, we aimed to investigate the relationship between body composition and bone mineral density (BMD) to determine whether fat mass or lean mass is a better determinant of BMD in Turkish postmenopausal women. Lumbar spine (L1–L4) and proximal femur BMD were measured by dual energy X-ray absorbsiometry. Body composition analysis was performed by bioelectric impedance method and fat mass, lean mass, and percent fat were measured. Both fat mass and lean mass were positively correlated with BMD at the lumbar spine and proximal femur, weight and body mass index. Lean mass was also positively correlated with height and negatively correlated with age and years since menopause (P < 0.01). The correlations of fat mass and lean mass with BMD at the lumbar spine and proximal femur remained significant after adjustment for age, years since menopause and height. When the lean mass was adjusted together with age, years since menopause and height, the significant relationship between the fat mass and BMD continued, however the significant correlation between the lean mass and BMD disappeared at all sites after adjustment for fat mass. In multiple regression analyses, fat mass was the significant determinant of all BMD sites. Our data suggest that fat mass is the significant determinant of BMD at the lumbar spine and proximal femur, and lean mass does not have an impact on BMD when fat mass was taken into account in Turkish postmenopausal women.
KeywordsBody composition Bone mineral density Postmenopausal women Fat mass Lean mass
- 6.Abernathy RP, Black DR (1996) Healthy body weights: an alternative perspective. Am J Clin Nutr 63:448–451Google Scholar
- 18.Hsu YH, Venners SA, Terwedow HA, Feng Y, Niu T, Li Z, Laird N, Brain JD, Cummings SR, Bouxsein ML, Rosen CJ, Xu X (2006) Relation of body composition, fat mass, and serum lipids to osteoporotic fractures and bone mineral density in Chinese men and women. Am J Clin Nutr 83:146–154PubMedGoogle Scholar
- 32.Reid IR, Evans MC, Cooper GJS, Ames RW, Stapleton J (1993) Circulating insulin levels are related to bone density in normal postmenopausal women. Am J Physiol 265:655–659Google Scholar
- 36.Svendsen OL, Haarbo J, Heitmann JL, Gotfredsen A, Christiansen C (1991) Measurement of body fat in the elderly subjects by dual energy X-ray absorbsiometry, bioelectrical impedance, and antropometry. Am J of Clin Nutr 53:1117–1123Google Scholar