Bioelectrical impedance analyses of patients with postmenopausal osteoporosis

摘要

Body composition undergoes changes with aging and menopause. This study was planned to investigate the bodycomposition in postmenopausal women.Total lean, fat mass and total body BMD were measured by dual-energy X-ray absorptiometry (DXA). All subjects with a T-scoreless than -1.5 were called the patient group. Total lean, fat mass and other components of body composition were also assessedby bioelectrical impedance (BIA). Demographical and physical characteristics were recorded for each subject.Total lean mass was significantly lower and fat mass was higher in the patient group than in healthy controls (p < 0.05). BMDvalues were positively correlated with lean mass (r = 0.336, p < 0.05). There were no significant differences between patientsand healthy controls with regard to body composition measured by DXA and BIA (p < 0.05).These findings suggest that there is a difference between postmenopausal women with osteopenia/osteoporosis and healthycontrols with regard to fat and lean mass. Total lean mass may be an important determinant of BMD in postmenopausal women.BIA might be an alternative method to DXA for the measurement of total body fat and lean mass.