2.3.1. Analyses of Hemodynamic and Autonomic Variables
BLOOD
Blood pressure (BP) values were collected in the left arm [For the autonomic analysis, the behavior of heart rate variability (HRV) was used, measured in a 5 min window within the rest period. Considering the mean and indices of the time domain (RR, RMSSD and SDNN) and frequency (LF, HF and LFFor the analysis of HRV in the frequency domain, low-frequency components (low frequency—LF) were used, which corresponds to the joint action of the parasympathetic and sympathetic on the heart with the predominance of the sympathetic and the high-frequency component (high frequency—HF) that corresponds to respiratory modulation and represents the activation of the vagus nerve [A POLAR RS800CX watch (Multisport model), Kempele, Finland