Table 5.
Comparison of 24-hour HRV indices and circadian amplitude of 2 subjects in group B2 versus the other 6 subjects.
| 24-hour HRV | Group A and B1 (n = 6) | Group B2 (n = 2) | Student t-test | ||||
|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | t | p | ||
| Pre | HR | 75.2 | 9.4 | 59.5 | 11.5 | −1.962 | 0.0974 |
| β | −1.157 | 0.102 | −1.028 | 0.059 | 1.647 | 0.1507 | |
| TF | 4725.0 | 1282.6 | 15810.2 | 4353.5 | 6.379 | 0.0007 | |
| SDNN | 108.50 | 15.99 | 211.85 | 1.06 | 8.668 | 0.0001 | |
| SDANN | 92.78 | 12.53 | 190.90 | 7.50 | 10.152 | 0.0001 | |
| TI | 28.22 | 2.41 | 52.84 | 7.19 | 8.219 | 0.0002 | |
| ISS01 | HR | 68.9 | 7.7 | 60.8 | 15.6 | −1.040 | 0.3386 |
| β | −0.981 | 0.111 | −0.945 | 0.130 | 0.384 | 0.7145 | |
| TF | 4744.7 | 1677.6 | 9369.6 | 276.9 | 3.689 | 0.0102 | |
| SDNN | 133.65 | 18.07 | 195.00 | 19.66 | 4.096 | 0.0064 | |
| SDANN | 114.58 | 14.10 | 148.20 | 14.99 | 2.888 | 0.0278 | |
| TI | 32.32 | 5.07 | 51.60 | 4.13 | 4.791 | 0.0030 | |
| ISS02 | HR | 68.9 | 7.7 | 61.2 | 5.7 | −1.276 | 0.2490 |
| β | −0.899 | 0.170 | −0.941 | 0.082 | −0.323 | 0.7574 | |
| TF | 4020.1 | 1040.7 | 9736.0 | 1650.0 | 6.011 | 0.0010 | |
| SDNN | 118.07 | 26.42 | 211.90 | 60.95 | 3.316 | 0.0161 | |
| SDANN | 100.87 | 24.08 | 186.85 | 35.85 | 3.988 | 0.0072 | |
| TI | 25.64 | 3.88 | 41.60 | 9.81 | 3.656 | 0.0106 | |
| ISS03 | HR | 68.7 | 7.9 | 60.4 | 8.5 | −1.267 | 0.2519 |
| β | −0.937 | 0.105 | −0.911 | 0.089 | 0.307 | 0.7694 | |
| TF | 5122.1 | 1364.1 | 12612.3 | 3217.9 | 5.068 | 0.0023 | |
| SDNN | 134.10 | 26.25 | 210.90 | 49.78 | 2.994 | 0.0242 | |
| SDANN | 113.47 | 22.09 | 186.95 | 44.05 | 3.331 | 0.0158 | |
| TI | 27.92 | 5.01 | 38.24 | 8.18 | 2.231 | 0.0672 | |
| Post | HR | 72.7 | 7.0 | 65.0 | 16.5 | −1.008 | 0.3524 |
| β | −1.164 | 0.170 | −1.066 | 0.100 | 0.749 | 0.4819 | |
| TF | 5606.2 | 1412.6 | 11090.0 | 1920.2 | 4.451 | 0.0043 | |
| SDNN | 129.07 | 34.90 | 198.15 | 31.32 | 2.464 | 0.0488 | |
| SDANN | 107.22 | 32.46 | 178.50 | 37.34 | 2.620 | 0.0396 | |
| TI | 34.03 | 7.64 | 43.54 | 10.90 | 1.408 | 0.2088 | |
| Circadian amplitude | Group A and B1 (n = 6) | Group B2 (n = 2) | Student t-test | ||||
| Mean | SD | Mean | SD | t | p | ||
| Pre | NN | 69.1 | 25.9 | 200.5 | 40.8 | 5.560 | 0.0014 |
| TF | 1240.8 | 513.7 | 7781.2 | 461.3 | 15.851 | <0.0001 | |
| ULF | 1140.8 | 586.3 | 5957.1 | 763.8 | 9.523 | 0.0001 | |
| VLF | 417.7 | 239.2 | 3304.5 | 1640.5 | 5.019 | 0.0024 | |
| LF | 119.6 | 92.6 | 350.7 | 265.9 | 2.057 | 0.0854 | |
| HF | 33.9 | 36.5 | 85.9 | 58.1 | 1.559 | 0.1701 | |
| ISS01 | NN | 103.1 | 37.2 | 182.7 | 28.4 | 2.720 | 0.0347 |
| TF | 2571.6 | 990.0 | 3279.8 | 1427.6 | 0.807 | 0.4507 | |
| ULF | 2567.7 | 1064.1 | 3030.3 | 2730.7 | 0.383 | 0.7148 | |
| VLF | 611.3 | 374.4 | 1561.2 | 127.7 | 3.365 | 0.0151 | |
| LF | 91.4 | 77.5 | 339.4 | 425.5 | 1.620 | 0.1564 | |
| HF | 33.2 | 31.4 | 47.5 | 26.9 | 0.572 | 0.5881 | |
| ISS02 | NN | 88.7 | 39.5 | 179.0 | 9.4 | 3.040 | 0.0227 |
| TF | 2329.4 | 1892.0 | 7434.7 | 3286.6 | 2.859 | 0.0288 | |
| ULF | 2026.4 | 2056.6 | 5318.0 | 4264.9 | 1.574 | 0.1664 | |
| VLF | 587.6 | 262.7 | 1658.6 | 844.6 | 3.123 | 0.0205 | |
| LF | 95.1 | 53.2 | 364.7 | 310.5 | 2.432 | 0.0510 | |
| HF | 27.6 | 13.8 | 53.4 | 47.8 | 1.363 | 0.2219 | |
| ISS03 | NN | 107.8 | 28.0 | 190.6 | 32.9 | 3.513 | 0.0126 |
| TF | 3405.3 | 2320.0 | 6082.1 | 3484.3 | 1.285 | 0.2462 | |
| ULF | 3153.1 | 2045.1 | 4921.5 | 4064.2 | 0.867 | 0.4192 | |
| VLF | 621.8 | 405.3 | 2695.9 | 2236.2 | 2.579 | 0.0418 | |
| LF | 134.9 | 100.1 | 461.5 | 418.3 | 2.065 | 0.0844 | |
| HF | 69.0 | 66.2 | 78.9 | 74.6 | 0.180 | 0.8630 | |
| Post | NN | 88.7 | 50.5 | 175.8 | 91.4 | 1.798 | 0.1223 |
| TF | 1752.8 | 613.5 | 4717.8 | 1049.4 | 5.150 | 0.0021 | |
| ULF | 1525.0 | 626.5 | 3277.0 | 518.5 | 3.519 | 0.0125 | |
| VLF | 485.8 | 228.3 | 2394.0 | 1567.7 | 3.472 | 0.0133 | |
| LF | 155.0 | 75.1 | 425.7 | 494.5 | 1.555 | 0.1709 | |
| HF | 39.4 | 19.7 | 41.6 | 45.8 | 0.103 | 0.9215 | |
HR: Heart Rate; NN: NN-interval.