3. Results
HIGH BLOOD PRESSURE, HBP
There were 84 participants into the study, 42 in the control group and 42 in the HBP group. Baseline characteristics of those groups are described in MANOVA revealed significant effects for groups [Wilks’ lambda = 0.220, F12, 71 = 20.94, The main effect for groups was found only for mean RR, suggesting that the mean RR was higher for the HBP group than for the control group (m = 845 ± 119 ms vs. m = 787 ± 120 ms; The main effects for moments occurred in all frequency domain indexes, suggesting that the comparison between rest and exercise, R1, R2, and R3 had significant differences. The main effects for the group were not found for LF (msComparative analysis of HRV (SDNN, TINN, RRTri, and RMSSD) during rest, aerobic exercise, and recovery. MANOVA test (Mean ± SD), HBP (high blood pressure group), Control (Control Group), (R1) recovery period 1—first 5 min of the recovery period, (R2) recovery period 2—between the 10th and 15th min of the recovery period, (R3) recovery period 3—between the 25th and 30th min of the period recovery, (ms) ms, (SDNN) standard deviation of all normal RR intervals recorded at an interval of time, (bpm) beats per min, (RMSSD) root mean square of the square of differences between adjacent normal RR intervals in an interval of time, (TINN) triangular interpolation histogram of RR intervals, (RRtri) triangular index, and (SD) standard deviation. (a) Post hoc test found differences when comparing rest with exercise, (b) post hoc test found differences when comparing rest with R1, (c) post hoc test found differences when comparing rest with R2, (d) post hoc test found differences when comparing rest with R3, and (e) post hoc test found differences when comparing R1 with R3.The main effects for moments occurred again in all geometrical indexes, except in the TINN (Comparative analysis of HRV (SD1, SD2, SD1/SD2 and HF) during rest, aerobic exercise, and recovery. MANOVA test (Mean ± SD), HBP (high blood pressure group), control (control group), (R1) recovery period 1—first 5 min of the recovery period, (R2) recovery period 2—between the 10th and 15th min of the recovery period, (R3) recovery period 3—between the 25th and 30th min of the period recovery, (SD1) standard deviation of the variability instantaneous beat-to-beat or dispersion of points perpendicular to the line of identity, (SD2) standard deviation of long-term continuous RR intervals or dispersion of points along the line of identity, (SD1/SD2) ratio scatter of points perpendicular to the dispersion line identity of dots along line identity, percentage of adjacent RR intervals with a difference of duration greater than 50ms, (%) percentage, and (HF) high frequency component. (a) Post hoc test found differences when comparing rest with exercise, (b) post hoc test found differences when comparing rest with R1, (c) post hoc test found differences when comparing rest with R2, (d) post hoc test found differences when comparing rest with R3, and (e) post hoc test found differences when comparing R1 with R3.