Fig. 2.
The median (10th to 90th percentiles) of baroreflex sensitivity in the high-frequency band (αHF, A), pulse photoplethysmographic amplitude (PPGA, B), autonomic nervous system state (ANSS, C), and autonomic nervous system state index (ANSSi, D) during the study protocol. Data during recovery period are not shown. * A significant difference between boxes (P < 0.05) assessed with ANOVA for repeated measurements at five time points and Bonferroni post hoc test. Bas = baseline; HUT45 = head-up tilt at 45°; HUT90 = head-up tilt at 90°.