Apr 19, 2013 - 02:13 PM
Golgi Tendon Organs (GTO) monitor changes in tension in the muscle and tendon. They have a protective mechanism that causes inhibition in the muscle when the tension experienced is deemed too great and may cause injury. Fatigue at the end of a set of exercise is a different matter and is metabolic or neurological fatigue.
An example of the GTO on action is a deconditioned individual jumping off of a curb. As they land, the GTO in the calves are alerted to the amount of force entering the muscles and the potential for injury to the tissue. The GTO may inhibit the calve complex and the individual will crumble to the ground instead of the muscle engaging to stop the movement and potentially cause an injury.