Table 6.
Typical HRV measures after applying median and threshold filters, and the proposed algorithms for various peak sizes, compared to the HRV measures in the original signal for Participant 3 (NEEDED database).
| Signal | Method | RMSSD | SDNN | SDSD | Total Power |
LF | HF | SD1 | SD2 | Mean Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Original | 4.24 | 22.26 | 4.22 | 225.53 | 13.46 | 1.95 | 2.98 | 31.34 | ||
| Peak 2x | Median w = 3 | 3.49 | 22.04 | 3.46 | 227.83 | 12.13 | 1.78 | 2.45 | 31.07 | 9.3% |
| Thr m = 5 | 4.24 | 22.24 | 4.22 | 227.00 | 12.62 | 1.84 | 2.98 | 31.31 | 1.6% | |
| Algorithm 1 (StDev.) |
4.47 (0.25) |
22.29 (0.04) |
4.45 (0.25) |
228.94 (2.90) |
12.54 (0.12) |
2.10 (0.31) |
3.15 (0.18) |
31.37 (0.06) |
4.1% | |
| Peak 3x | Median w = 3 | 3.50 | 22.04 | 3.46 | 232.51 | 11.38 | 1.85 | 2.45 | 31.08 | 9.8% |
| Thr m = 5 | 4.24 | 22.24 | 4.22 | 229.19 | 11.91 | 1.84 | 2.98 | 31.31 | 2.4% | |
| Algorithm 1 (StDev.) |
4.42 (0.19) |
22.03 (0.06) |
4.40 (0.19) |
229.54 (3.52) |
12.54 (0.16) |
2.20 (0.50) |
3.11 (0.14) |
31.38 (0.07) |
4.3% |