The Stabilizer Pressure Biofeedback unit gives valuable information to ensure quality and precision in exercise performance and muscle testing. It allows the clinician and patient to determine if the patient is able to selectively isolate and maintain contractions of the cervical or lumbopelvic core stabilization muscles. The Stabilizer monitors the position of the low back and provides feedback when the abdominal muscles are not actively or effectively protecting the spine. The measuring range is 0-200 mmHg analog pressure with an accuracy of +/- 3 mnHz pressure.