Reducing risk of injury

In my recent posts I have discussed the risk of mainly lower back injury with improper performance of the push up secondary to increased acceleration of the movement. This risk actually holds true for any select exercise technique if proper stability isn't maintained around the joint. One of Newton's laws states F=ma (force=mass x acceleration) and this means that any change in either the resistance or the acceleration can cause an increase in the force. Since the joint is the movable segment in any exercise technique, there must be sufficient strength in the tissues surrounding the joint to offer the required stability. Although explosive motions offer good training results, the resistance offered by the bodies weight is usually more that adequate and there is less risk of over-stressing the joint.