Abstract: The present invention is a novel and unique portable and adaptable lumbar stabilization and upper and lower extremities rehabilitation muscle feedback device. The inventive devices and methods allow healthcare professionals as well ass patient to accurately assess the patient during the use of “neutral spine” exercises. A bladder is retained against a portion of the body and pressurized. The bladder pressure is monitored to encourage the user to maintain controlled contraction of the target muscles, thereby increasing proprioception and neuromuscular control.