The Whole Body Vibration To Bone Metabolism And Bone Density In Postmenopausal Women

Purpose: Through three months vibration training to the postmenopausal women, this article investigates the effects of vibration stimulation to the BMD, bone metabolism, muscle strength and balance in the postmenopausal women, so as to find a new, safe and effect way to prevent or cure OP.Methods: Twenty-eight postmenopausal women were randomized to either the vibration group or control group, and applying DEXA to measure these subjects' lumber spine and both sides of thigh BMD. The vibration group consisted of a three months vibration training(30-45Hz, 10 minutes every time, 3 times a week). Subjects' bone mineral metabolism mark as OPG, TRAP and BALP in the blood serum, and weight, BMI index, muscle strength and balance were measured.Results: (1) There is no significant change of BMD between vibration group and control group before and after experiment (P>0.05), but the whole BMD is improved significantly(P<0.05). After the experiment, the control group's left leg thigh BMD was significantly reduced(P=0.039, P<0.05). (2) No significant changes have observed in OPG and TRAP between these two group before and after experiment(P>0.05); In these two group, BALP has significant difference before the training(P=0.015, P<0.05). But after three months training, BALP became very significant difference in these two(P=0.004, P<0.01). (3) In the vibration group, F/E total work, F/E average work, flexion extension and isometric peak torch have no obvious changes before and after research. However, F/E total work, F/E average work have reduced significantly after three months in control group(P=0.025, P=0.020; P<0.05). (4) After three months' vibration training, static MD and EA have reduced significantly when the subjects opening their eyes, and when closing, static COPY and MD also reduced significantly(P<0.05)Conclusion: The main influence of whole body vibration to BMD of postmenopausal women is to prevent bone loss. The bone formation effect is no so obvious. (2) The vibration stimulus cannot put obvious effect on OPG, TRAP level, but it can relatively improve BALP concentration. (3) Compare with control group, vibration training can improve F/E, and it's good for balance control. (4) This training can elevate these women's balance ability, and it may have important significance to prevent older people fall. (5) It can reduce pain at waist and leg, and has good compliance.