Fig. 2

Average haemodynamics during the head-up tilt protocol. Average radial systolic (a) and diastolic (b) blood pressure, systemic vascular resistance index (c), and cardiac index (d) during the 15-min measurement protocol (5 min supine – 5 min upright – 5 min supine) in all subjects (n = 470). Mean ± 95 % confidence interval