Fracture protective efficacy by bone density elevation and the quantity of muscle increase due to the stimulation of concussion and vibration

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When people stand for a long time, they prevent becoming tired by unconsciously shifting the center of mass of the body between the right and left. In a sense, they are performing mild whole body exercise. Standing still on a shaking plate invokes more appropriate whole body exercise than that when standing on a motionless plate. In the present study, we observed that shaking stimuli applied to a mouse model of declining bone mineral density (BMD) prevented femoral bone strength from decreasing, although the degree of prevention differed from site to site. Whole body exercise provoked by shaking stimuli may represent a novel physical therapy in bone fracture prevention and health promotion not only in the elderly, but also in young people.