Recent forms of therapy for spinal cord injury and stroke patients, especially for therapy of orthostatic hypotension, suggest among others verticalisation and passive leg movement by use of automatic tilt tables with robotic actuators. This article suggests the enhancement of such a device with the goal of enabling the patient´s active participation by allowing him to control his own work rate, based on visual biofeedback. At the same time the amount of the patient´s physiological stress is digitally controlled by adjustment of the visualised target work rate. As a result the patient´s cardio-pulmonary performance may be systematically increased. This enhancement has been realised as a prototype by integration of appropriate sensors and peripherical devices for digital control, operation and visualisation. Tests in line with a strictly technical validation study with several able-bodied male test persons yielded positive results, regarding the volitional work rate control by the individuals as well as the control behavior of the digital stress controllers.