Table 2 Descriptive analyses of heart rate variability (HRV) and heart rate n-variability (HRnV) parameters
| Â | HRV | HR2V | HR2V1 | HR3V | HR3V1 | HR3V2 |
|---|---|---|---|---|---|---|
Mean NN (s) | 829.40 (169.49) | 1656.65 (339.85) | 1658.81 (338.99) | 2484.80 (509.33) | 2488.22 (508.50) | 2485.02 (509.84) |
SDNN (s) | 38.16 (25.49) | 62.28 (45.45) | 68.81 (47.00) | 82.06 (62.47) | 97.79 (67.46) | 87.77 (64.52) |
RMSSD (s) | 30.04 (23.07) | 32.61 (26.68) | 33.79 (25.67) | 34.83 (28.86) | 36.27 (26.50) | 34.98 (27.43) |
Skewness | −0.65 (2.34) | −0.41 (1.66) | −0.59 (1.95) | − 0.29 (1.29) | −0.55 (1.69) | − 0.38 (1.42) |
Kurtosis | 14.59 (26.83) | 7.33 (13.58) | 10.17 (17.90) | 5.15 (8.13) | 8.06 (12.92) | 5.98 (9.75) |
Triangular index | 7.68 (4.19) | 10.38 (5.10) | 12.60 (6.45) | 11.47 (5.29) | 16.25 (7.94) | 13.06 (6.04) |
NN50 (count) | 21.08 (33.98) | 14.46 (20.35) | 29.35 (40.03) | 11.57 (15.05) | 35.29 (44.34) | 17.41 (22.51) |
pNN50 (%) | 6.31 (11.08) | 8.66 (13.18) | 8.75 (12.97) | 10.31 (14.27) | 10.38 (13.95) | 10.28 (14.20) |
NN50n (count) | – | 4.16 (9.72) | 8.45 (18.76) | 1.37 (3.72) | 4.37 (10.72) | 2.08 (5.48) |
pNN50n (%) | – | 2.60 (6.67) | 2.64 (6.47) | 1.32 (3.95) | 1.39 (3.86) | 1.33 (3.87) |
Total power (ms2) | 2518.30 (4797.05) | 7797.46 (16,947.44) | 9156.26 (17,970.75) | 13,904.78 (37,182.24) | 18,714.67 (37,620.26) | 15,706.11 (34,845.52) |
VLF power (ms2) | 985.18 (1991.52) | 3401.42 (6569.37) | 3922.74 (7987.46) | 6503.53 (14,205.11) | 8772.26 (17,986.63) | 7567.79 (14,666.32) |
LF power (ms2) | 732.36 (1841.88) | 2626.83 (7593.16) | 2782.48 (7212.62) | 5091.49 (18,402.20) | 5740.99 (15,243.38) | 5397.76 (16,001.18) |
HF power (ms2) | 527.27 (1232.69) | 1328.86 (4033.96) | 1361.53 (3433.55) | 1661.69 (7237.55) | 1762.45 (4851.11) | 1761.05 (6477.63) |
LF power norm (nu) | 56.76 (19.20) | 66.82 (18.17) | 66.42 (17.35) | 76.53 (15.32) | 77.65 (14.55) | 77.93 (14.95) |
HF power norm (nu) | 43.24 (19.20) | 33.18 (18.17) | 33.58 (17.35) | 23.47 (15.32) | 22.35 (14.55) | 22.07 (14.95) |
LF/HF | 1.99 (1.93) | 3.24 (2.95) | 3.04 (2.73) | 5.60 (5.21) | 5.79 (4.99) | 6.06 (5.18) |
Poincaré SD1 (ms) | 21.27 (16.34) | 23.12 (18.93) | 23.92 (18.18) | 24.72 (20.50) | 25.68 (18.77) | 24.80 (19.46) |
Poincaré SD2 (ms) | 48.82 (33.29) | 84.47 (62.15) | 93.88 (64.58) | 112.87 (86.62) | 135.55 (94.02) | 121.20 (89.72) |
SampEn | 1.57 (0.51) | 83.84 (2324.24) | 1.33 (0.48) | 248.48 (4020.64) | 1.06 (0.41) | 1.14 (0.45) |
ApEn | 0.99 (0.20) | 0.72 (0.18) | 0.91 (0.17) | 0.60 (0.15) | 0.84 (0.17) | 0.70 (0.15) |
DFA, α1 | 0.99 (0.31) | 1.24 (0.29) | 1.23 (0.27) | 1.41 (0.27) | 1.42 (0.23) | 1.42 (0.25) |
DFA, α2 | 0.95 (0.22) | 0.98 (0.35) | 0.98 (0.22) | 0.86 (0.65) | 1.01 (0.22) | 1.02 (0.36) |