Design

• The difference between vibrating and oscillating machines is the range of movements that they produce. A vibrating plate produces a straight, up-and-down movement while an oscillating plate pivots around a central point. When it raises at one corner it will dip at another. The number of points which can raise up and down on the oscillating plate depends on the model, but three moving sections in a triangular pattern is most common.
  
  

Effect on the Body

• The up-and- down action of the vibrating plate causes the body to undergo a rapid cycle of loading and unloading resistance, straining the body under the equivalent of almost 600 percent of its weight. This encourages the larger muscles in the legs and stomach to develop rapid and powerful reactions. The oscillating plate balances the upward movement on one side of the body with a simultaneous downward movement on the other. This means that no excessive loading is produced and more of the muscles are engaged in reacting to the movement.
  
  

Benefits and Dangers of Vibrating Plates

• Vibrating plates have been shown to improve jump height. This makes them very useful for high-level basketball players and other athletes. However, the strain of the movement can cause problems with the spine and other joints, especially for people with existing conditions. This also means that only certain postures are suitable and not all the muscles will be exercised.
  
  

Advantages and Disadvantages of Oscillating Machines

• Oscillating machines are not associated with the loading/unloading strain caused by vibrating machines, so they are suitable for more people. They are also more suitable for balancing with the arms as well as the legs, allowing a broader range of exercises to be carried out. Alternating muscle action from side to side is also a more natural exercise and primes the body for athletic movements. The main disadvantage of the oscillating system over the vibrating one is that oscillating systems are more expensive.