How does the WBV Device cause muscles to contract automatically?

Due to mechanical vibration produced by the “WBV” Device the body will react immediately. While standing on the “WBV” Device, the natural balance in the human body is disturbed. Many muscles will be activated in order to recover the balance lost. By changing the angles of the joints and the position on the “WBV” Device the muscles around the joint involved will stretch. This stretching is registered by the muscle spindles, which will send a signal through the afferent nerves to the cortex, which in turn will react with signals through the spinal cord and cause a reflex contraction of the muscles involved. The change of position is thus countered as soon as possible.