What is the phenomenon called when prolonged Golgi tendon organ stimulation provides an inhibitory action to muscle spindles?

Autogenic Inhibition

Explanation:

Autogenic reflex inhibition is a rapid muscle relaxation following high tension growth. It is a response that lengthens self-induced adverse feedback that prevents muscle injury.

Golgi tendon bodies are reflex receptors. Autogenic inhibition is a defense mechanism that prevents muscles from exerting more strength than can be tolerated by the bones and tendons.