"stretch reflex" basicly its not your muscle length but your muscle believeing it can stretch. the muscle spindle needs to learn its ok to relax. and that youre not over extending the joint like it thinks.
(34) Muscle Stretch Reflex- Draw it to Know it, Neuroanatomy - YouTube
What is Myofascial release (MFR)? It’s considered an alternative therapy that is used to treat skeletal muscle immobility and pain by relaxing contracted muscles, improving blood and lymphatic circulation, and stimulating the stretch reflex in muscles. Read on. http://coe-dynamics.com/pilatesblog/august-pilates-newsletter/