The lower half of the Side-to-Side Machine moves from left to right. The upper portion remains stationary. The patient lies supine with dorsal lumbar at the union of the two machine pieces. A lateral flexion, alternating left and right sides, is experienced by the patient. Increased trunk flexibility and blood circulation benefit the patient.
A variable speed control mechanism allows the therapist a selection in the number of revolutions the patient will experience per minute. The speed can be reduced to as low as one RPM.