Characteristics and relationship of bone strength and body composition in pre- And post- menopausal Dongxiang women / 解剖学报

ABSTRACT

Objective To analyze the changes of bone strength and body composition in pre- and postmenopausal Dongxiang women and explore the impact of body composition change on bone strength. Methods From Sep. 2016 to Jul. 2018, 203 cases Dongxiang 41-50 year old women (102 cases of premenopause and 101 cases of postmenopause) of Gansu Province were selected by stratified random sampling method, whose bone strength and body composition indexes were measured by ultrasonic bone mineral density meter and body composition analyzer respectively. Results There were lower bone strength and muscle tissue composition in the postmenopausal Dongxiang women (P< 0.05), and there was higher fat tissue composition (P < 0.01). The prevalence of osteoporosis was higher in postmenopausal women (P < 0. 01). Pearson correlation analysis showed that muscle tissue composition was positively correlated with the bone strength (P<0. 01), and it was negatively correlated with fat tissue composition in the pre- and postmenopausal Dongxiang women (P < 0. 0 1). Multivariate linear stepwise regression analysis showed that limb muscle mass and subcutaneous fat mass were a protective factor and a risk factor for bone strength in pre- and post-menopausal Dongxiang women, respectively. Conclusion The bone strength of Dongxiang women was determined by muscle and fat tissue, and associated with the distribution of body composition. The relationship between bone strength and body composition was not affected by menopause. Menopause was an important factor that increased the incidence of osteoporosis in Dongxiang women, and we should reinforce osteoporosis prevention in postmenopausal Dongxiang women. Strengthen physical exercise, increase limb muscle mass and reduce subcutaneous fat could contribute to increase bone strength and prevent osteoporosis in in the pre- and post-menopausal Dongxiang women.