Table 3.
Correlations between exercise load and post-exercise HRV15-min.
| BLa (mmol·L−1) | RPE | Exercise duration (s) | |
|---|---|---|---|
| Time-domain | |||
| RR (ln ms) | −0.52∗∗ | −0.40∗ | 0.22 |
| SDNN (ln ms) | −0.68∗∗∗ | −0.53∗∗ | −0.11 |
| RMSSD (ln ms) | −0.53∗∗ | −0.44∗∗ | 0.16 |
| Frequency-domain | |||
| LF (ln ms2) | −0.49∗∗ | −0.51∗∗∗ | −0.15 |
| HF (ln ms2) | −0.55∗∗∗ | −0.50∗∗ | −0.36∗ |
| TP (ln ms2) | −0.50∗∗ | −0.49∗∗ | 0.37 |
RPE: Rating of Perceived Exertion; BLa:Blood lactate concentration; RR mean: mean time between normal R waves of ECG; RMSSD: Root Mean Square of successive differences; SDNN: Standard Deviation of Normal to Normal; LF: Low Frequency, HF: High Frequency, TP: Total Power; ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.