I. Introduction
Recently vertical whole body vibration with a low frequency and amplitude as a physical training method for the musculoskeletal system has been with more and more research and tentative application [1] – [4]. The previous research indicate that the vibration could well effect on the skeletal system directly to change bone mineral content [2]; also it could set off excitation of the muscular spindle and increase muscle the spontaneous contraction to change strain stress on the skeletal correspondently [3]. And those changes caused by the vibration with special frequency could be better for the musculoskeletal system.