For the first time, stairs-training can be monitored and documented. The Computerized DST monitors, tracks and displays patient's performance in past and current treatment sessions, with a clear, objective and accurate Personal Chart of Progress - a document, generated automatically by the DST-System. Monitors, records and displays patient's performance in past and current treatment sessions. Recorded data includes treatment dates, height of stairs, and patient's time frames for ascents and descents. With a click of a button, patient's progress is displayed as a chart including all past sessions. Generate progress charts for the patient, with the option to email results to medical staff for review and evaluation. Creates a clear and objective document for physiotherapists, patients, physicians and insurance providers, to evaluate patient's stairs usage and gait capabilities. Creates a patient's "DST Factor", a unique parameter conveniently summarizing the patient's current status and estimated potential for future improvement.