title: Relationship between body composition and bone mineral density of the lumbar spine and proximal femur: influence of years since menopause.
abstract: OBJECTIVE
  To investigate the relationship between the body composition and regional bone mineral density (BMD) in postmenopausal women according to years since menopause (YSM).
  
  
  METHODS
  A total of 167 postmenopausal women with a mean age of 62.91 ± 5.09 years participated in this cross-sectional study. The average YSM was 11.96 ± 6.28 years. We used the DXA Lunar Prodigy Primo(™) device to assess the body composition parameters [body fat mass (BFM) and lean body mass (LBM)] and the BMD of the lumbar spine, proximal femur and total body.
  
  
  RESULTS
  The LBM was a stronger predictor of the proximal femur BMD than BFM in 1-10 YSM category, whereas the BFM was a stronger predictor of the proximal femur BMD than LBM in 11-20 and 21-30 YSM categories. The BMD of the lumbar spine showed a similar trend. A significant relationship was found between BMD of L(1)-L(4) and LBM in 1-10 YSM category (r = 0.26; p < 0.05). BFM was significantly associated with BMD of L(1)-L(4) in 11-20 YSM category (r = 0.25; p < 0.05). Significant relationships were found between total femur BMD and LBM in 1-10 YSM (r = 0.27; p < 0.05) and 11-20 YSM category (r = 0.25; p < 0.05). BFM was significantly associated with total femur BMD only in 11-20 YSM category (r = 0.40; p < 0.05).
  
  
  CONCLUSIONS
  The relationships between BMD and body composition are dependent on YSM and vary between selected segments.
authors.affiliation: Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacký University Olomouc , Olomouc , Czech Republic.
authors.forename: Ondřej
authors.initials: O
authors.lastname: Kapuš
authors.forename: Aleš
authors.initials: A
authors.lastname: Gába
authors.forename: Zdeněk
authors.initials: Z
authors.lastname: Svoboda
authors.forename: Michal
authors.initials: M
authors.lastname: Botek
mesh_terms: D000368:Aged; D001823:Body Composition / Q000502:physiology*; D015992:Body Mass Index; D015519:Bone Density / Q000502:physiology*; D003430:Cross-Sectional Studies; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging*; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging*; D008875:Middle Aged; D017698:Postmenopause / Q000502:physiology*; D011859:Radiography; D013997:Time Factors