| Objective:To study the effect of exercise on bone in postmenopausal women.Methods:106 post-menopausal women were divided into exercise group with 37 cases and control group with 69 cases.Exercise group was interfered with square dance,mountain climbing, jogging and other exercises,and control group given no intervention.BMC and BMD were tested by dual energy X-ray and compared between two groups.Results:After 8-month intervention,BMD and BMC in exercise group were increased significantly as compared with those before 8-month and control group(P<0.05).In exercise group,BMD and BMC in dorsal vertebra and BMC in pelvis were increased significantly as compared with those before intervention and control group(P<0.05 for all),and there was no significant difference in BMD and BMC of abdominal vertebra and BMD of pelvis.In control group,BMD and BMC in abdominal vertebra and pelvis were decreased significantly as compared with those before 8-month(P<0.05),but there was no significant difference in BMD and BMC of dorsal vertebra.In exercise group,BMD and BMC of dominant-side of upper limbs and dual sides of lower limbs were increased significantly as compared with those before intervention and control group(P<0.05),and those at the non-dominant-side of upper limbs got no statistically significant difference from those before intervention.In control group,BMD at the dominant-side of upper limbs(P<0.05),BMD and BMC at the non-dominant-side of upper limbs were decreased significantly as compared with those before 8-month(P<0.05),while BMC at the dominant-side of upper limbs, and BMD and BMC at the dual sides of lower limbs got no statistically significant difference from those before 8-month and after 8-month.Conclusion:Regular exercises can improve the BMD and BMC of dorsal vertebra in postmenopausal women significantly,but only maintain the BMD and BMC of abdominal vertebra and pelvis.The imbalance of activities between upper and lower limbs,and between dominant-side and non-dominant-side can affect the BMD and BMC of related parts. |
