Table 4.
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 1 (NEEDED database).
| Signal | Method | RMSSD | SDNN | SDSD | Total Power |
LF | HF | SD1 | SD2 | Mean Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Original | 3.09 | 13.13 | 3.10 | 49.52 | 5.43 | 2.21 | 2.19 | 18.44 | ||
| Peak 2x | Median w = 3 | 1.67 | 13.01 | 1.67 | 49.07 | 4.91 | 2.26 | 1.18 | 18.36 | 19.0% |
| Thr m = 5 | 3.05 | 13.09 | 3.05 | 49.30 | 5.46 | 2.31 | 2.15 | 18.39 | 1.3% | |
| Algorithm 1 (StDev.) |
3.07 (0.02) |
13.16 (0.02) |
3.07 (0.02) |
49.58 (0.14) |
5.40 (0.03) |
2.24 (0.02) |
2.17 (0.01) |
18.49 (0.03) |
0.6% | |
| Peak 3x | Median w = 3 | 1.67 | 13.01 | 1.67 | 49.03 | 4.95 | 2.40 | 1.18 | 18.36 | 19.7% |
| Thr m = 5 | 3.05 | 13.10 | 3.05 | 49.34 | 5.43 | 2.36 | 2.15 | 18.39 | 1.5% | |
| Algorithm 1 (StDev.) |
3.07 (0.02) |
13.16 (0.02) |
3.07 (0.02) |
49.58 (0.14) |
5.40 (0.03) |
2.24 (0.02) |
2.17 (0.01) |
18.49 (0.03) |
0.7% |