Table 5.
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 2 (NEEDED database).
| Signal | Method | RMSSD | SDNN | SDSD | Total Power |
LF | HF | SD1 | SD2 | Mean Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Original | 5.94 | 13.77 | 5.96 | 63.58 | 12.32 | 6.98 | 4.21 | 19.02 | ||
| Peak 2x | Median w = 3 | 2.63 | 13.44 | 2.63 | 58.58 | 9.64 | 5.47 | 1.86 | 18.92 | 27.6% |
| Thr t = 5 | 5.94 | 13.79 | 5.95 | 62.62 | 12.04 | 6.98 | 4.21 | 19.05 | 0.6% | |
| Algorithm 1 (StDev.) |
5.97 (0.04) |
13.85 (0.03) |
5.98 (0.04) |
62.98 (0.35) |
12.09 (0.02) |
6.99 (0.04) |
4.23 (0.03) |
19.12 (0.05) |
0.6% | |
| Peak 3x | Median w = 3 | 2.63 | 13.45 | 2.63 | 57.51 | 9.45 | 5.59 | 1.86 | 18.92 | 27.8% |
| Thr m = 5 | 5.94 | 13.80 | 5.96 | 61.57 | 11.74 | 7.06 | 4.21 | 19.06 | 1.2% | |
| Algorithm 1 (StDev.) |
5.97 (0.04) |
13.84 (0.03) |
5.98 (0.04) |
62.90 (0.36) |
12.08 (0.02) |
6.99 (0.03) |
4.23 (0.03) |
19.11 (0.03) |
0.7% |