Fig. 4. Changes in responses to the tilt test before and after tilt training. This graph describes the BRS and hemodynamic parameters during the head-up tilt test in one patient (tilt training no. 134). A (first session of tilt training): Heart rate and systolic blood pressure decreased in the passive phase, and the patient lost consciousness transiently (mixed type). B (fifth session of tilt training): The patient felt mild chest discomfort; however, heat rate and blood pressure did not decrease in the passive and isoproterenol phases. HR, heart rate; xBRS, cross-correlation baroreflex sensitivity.