What is the term for the decreased excitability of a contracting muscle or muscle being stretched?

The term referring to the decreased excitability of a contracting muscle or a muscle being stretched is autogenic inhibition. This phenomenon occurs through the activation of the Golgi tendon organs, which are sensory receptors located at the junction of muscles and tendons. When a muscle is excessively stretched or contracted, the Golgi tendon organs detect this tension and send signals to the spinal cord to inhibit the motor neurons that activate the muscle. This reaction helps prevent injury due to overstretching and maintains muscle integrity.

Understanding autogenic inhibition is crucial for treatment and training as it plays a significant role in muscle relaxation and can be utilized in rehabilitation protocols to foster flexibility and recovery. The body essentially utilizes autogenic inhibition as a protective mechanism, allowing muscles to relax and recover after intense activity or excessive stretching.