Fig. 2. BRS and hemodynamic parameters during head-up tilt test. Recordings during 5 min in the supine position immediately before upright posture (A) and during 5 min in a standing position immediately after an upright posture (B) are shown. SBP, systolic blood pressure; DBP, diastolic blood pressure; HR, heart rate; xBRS, cross-correlation baroreflex sensitivity.