title: [Bone mineral density in premenopausal and postmenopausal women between 50-55 and 50-57 years of age].
abstract: OBJECTIVE
  To investigate and evaluate the values of the BMD of the spine /L2-L4/ in anterior-posterior position by dual X-ray absorbtiometry in premenopausal women between 50-55 years and postmenopausal women between 50-57 years of age.
  
  
  METHODS
  93 healthy and with preserved menstruation women between 50-57 years and 112 postmenopausal women between 50-57 years of age were included in the study. BMD in g/cm2 was measured by dual X-ray absorbtiometry on LUNAR-DPX-A version 1.15 bone densitometer at L2-L4 in anterior-posterior position.
  
  
  RESULTS
  The BMD L2-L4 of the premenopausal women is statistically significant higher than that of the postmenopausal group. The correlation analyses between BMD and the other investigated variables shows a positive correlation between BMD and the body weight in the postmenopausal group and a weak negative correlation between BMD and the years of menopause.
  
  
  CONCLUSIONS
  The lower values of the coefficient of determination R2 in both groups can not allow us to predict the individual values of BMD based only upon the body weight. The years of menopause also have no predictable value for the BMD in the postmenopausal group.
authors.forename: E
authors.initials: E
authors.lastname: Enchev
authors.forename: N
authors.initials: N
authors.lastname: Botushanov
authors.forename: E
authors.initials: E
authors.lastname: Dzhambazova
mesh_terms: D015502:Absorptiometry, Photon; D001835:Body Weight; D015519:Bone Density; D005260:Female; D006801:Humans; D008875:Middle Aged; D017698:Postmenopause / Q000378:metabolism*; D017697:Premenopause / Q000378:metabolism*