2019 Volume 46 Issue 6 Pages 389-398
Purpose: The purpose of this study was to clarify the effect of whole-body vibration performed under the different position on lumbar spine and femoral neck bone density.
Methods: The subjects were postmenopausal women over the age of 60 years who had lumbar spine and femoral neck bone mineral density of more than 70% YAM (young adult mean) and did not use medicines for osteoporosis. The subjects were divided into 4 groups (control, standing position, sitting position, lateral decubitus position), then lumbar spine and femoral neck bone density were compared before and after the whole-body vibration intervention.
Results: Only the femoral neck bone mineral density of the control group decreased (P = 0.02). As a result of the χ2 test, the number of people who maintained or increased the femoral bone density was larger in the sitting group compared to the other groups (P = 0.03, V = 0.44).
Conclusions: It is suggested that the whole-body vibration of the sitting position may be the most effective to improve femoral neck bone mineral density. The effect of whole-body vibration to a specific body part may be different depending on the position.