This simple device provides feedback to ensure safety and precision in exercise performance and testing. Designed to monitor the position of the low back in order to assist in the prevention and rehabilitation of low back strain and pain. The unit consists of a combined bulb/dial gauge connected to a pressure pad. Comes with an instructional wall chart which provides details on general principles and applications. The Pressure Biofeedback may be used for abdominal muscle training and postural training. It may also be used to monitor the appropriate use of the muscles required in the stabilization and protection of the lumbar spine, during lower and upper limb exercise.