Table 1.

RR and SAP variability parameters.

μRR [ms]	Mean of the RR intervals [21]
σ2RR [ms2]	Variance of the RR intervals [21]
LFa,RR [ms2]	Absolute power of RR series in the low frequency band (LF, 0.04–0.15 Hz), index of cardiac sympathetic modulation [17,22]
LFnu,RR [nu]	Normalized power of RR series in the LF band, index of cardiac sympathetic modulation [17,22]
HFa,RR [ms2]	Absolute power of RR in the high frequency band (HF, 0.15–0.4 Hz), index of cardiac vagal modulation [14,21]
HFnu,RR [nu]	Absolute power of RR in the high frequency band, index of cardiac vagal modulation [14,21]
LF/HF	Index of cardiac sympathovagal balance [21]
μSAP [mmHg]	Mean of the SAP values [21,22]
μDAP [mmHg]	Mean of the DAP values [21,22]
σ2SAP [mmHg2]	Variance of the SAP [21,22]
LFSAP [mmHg2]	Absolute power of SAP series in the low frequency band (LF, 0.04–0.15 Hz), index of vascular sympathetic modulation [21,22]
cBRS [ms/mmHg]	Cardiac baroreflex sensitivity [23,24]