Typical error expressed as a coefficient of variation (%) of the differences between the two trials for resting and light exercise conditions
| Rest | Light exercise | |
|---|---|---|
| SDNN (ms) | 31 | 45 |
| RMSDD (ms) | 37 | 59 |
| NN50 (n) | 72 | 179 |
| pNN50 (%) | 81 | 187 |
| LF (ms2) | 97 | 142 |
| LF (NU) | 38 | 33 |
| HF (ms2) | 84 | 143 |
| HF (NU) | 35 | 75 |
| LF/HF ratio | 83 | 74 |