Abdominal Fat, Paraspinal Muscle Size And Bone Mineral Density In Postmenopausal Woman

Objective:To evaluate the correlation of bone mineral density(BMD)with the abdominal fat and paraspinal muscle size in postmenopausal woman.Methods:The study was conducted during the period from April 2016 to October 2016 on 75 postmenopausal women aged 45~83(62.19 ± 9.10)years.BMD of the lumbar spine was measured by dual-energy X-ray absorptiometry(DXA)and the outline of abdominal fat and paraspinal muscle size on the umbilical level of CT was drawed by using the post-processing workstation.For further analysis,the sample population was stratified according toBMI(Body Mass Index)into two groups.Group A 18.5≤BMI<24;Group B BMI≥28.Results:BMD of the lumber spine was correlated with BMI,abdominal subcutaneous fat,abdominal visceral fat,total abdominal fat,psoas muscle and spinal erector muscle respectively(r=0.264,P=0.022;r=0.244,P=0.035;r=0.286,P=0.013;r=0.298,P=0.009;r=0.371,P=0.001;r=0.258,P=0.025).After BMI stratification: in the group A: the BMD showed statistically correlation with psoas muscle and erecter spinae muscle(r=0.479,P=0.011;r=0.424,P=0.028).In the group B: the BMD showed statistically correlation with abdominal visceral fat and total abdominal fat(r=0.318,P=0.028;r=0.339,P=0.019).Conclusion:The results of the current study demonstrated that the abdominal fat and paraspinal muscle has a protective effect on BMD in post menopausal women.Our results suggest that suitable physical exercise and maintaining normal body weight is more conducive to prevent osteoporosis.