cause involuntary muscle contraction?
If you are standing on the VibroGym while it is turned off, your body will be naturally balanced. As soon as you start the vibrations, the natural balance of the body is interrupted so to recover this balance, the muscles of the body will be stimulated immediately. When performing different exercises, the muscles supporting the joints in action will stretch, which is registered by the muscle spindles. This in turn sends a message to the cortex of the brain, which then sends signals through the spinal cord to cause a reflex contraction. Therefore changes in position are countered immediately.
