Relationship between body composition and age, menopause and its effects on bone mineral density at segmental regions in Central Southern Chinese postmenopausal elderly women with and without osteoporosis

Abstract We aimed at evaluating the relationship between lean mass and fat mass with age, menopausal age (MA) and years since menopause (YSM) and their effects on bone mineral density (BMD) at segmental regions in postmenopausal elderly women with and without osteoporosis. After using a dual-energy X-ray absorptiometry (DXA) methodology to measure body composition and BMD at posteroanterior spine and hip in 244 postmenopausal elderly non-osteoporotic (Non-OP) women (65.5 ± 4.3 years) and 298 postmenopausal elderly osteoporotic (OP) women (67.1 ± 4.4 years), we found that in postmenopausal elderly Non-OP women, there was no correlation between lean mass with age, MA, and YSM, as well as no correlation between fat mass with age (all, p  > 0.05); leg fat (LF) mass ( r  = 0.187; p r  = 0.151; p r  = 0.141; p r  = −0.131; p r  = −0.127; p p  > 0.05); Trunk lean (TRL) mass ( r  = −0.183; p r  = −0.136; p r  = −0.162; p r  = −0.132; p r  = −0.152; p r  = −0.170; p