Heart rate variability (HRV), blood pressure variability (BPV) and baroreflex sensitivity (BRS) data measured on both study days at rest and during deep breathing.

mean values ± SEM, TP = total power, LF = low frequency, HF = high frequency, LF/HF = LF to HF ratio, LF-SBP = Low frequency power of systolic blood pressure variability, BRSup = baroreflex sensitivity calculated by the sequence technique for increasing blood pressure, BRSdown = baroreflex sensitivity calculated by the sequence technique for decreasing blood pressure, BRSLF = baroreflex sensitivity calculated by cross spectral analysis in the low frequency band, BRSHF = baroreflex sensitivity calculated by cross spectral analysis in the high frequency band.