 Subjects will be given a brief video tutorial on how to connect the Kinect camera to the television and laptop, power on the RMT and Kinect camera, and operate the RMT hardware and software by research staff; any questions will be answered at that time regarding RMT operation. Then, subjects will be evaluated by a licensed, currently practicing physical therapist and shown the four exercises they will perform in the session. The therapist will work with each of the patients until they achieve a satisfactory performance in each of the exercises, as assessed by the therapist. 