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Interpretation of HRV parameters.
| HRV parameter | Interpretation |
|---|---|
| Total power of the HRV spectrum (TP) | Total strength of ANS (overall state of HRV) |
| Very low frequency component (VLF) | Sympathetic regulation |
| Low frequency component (LF) | Both sympathetic and parasympathetic activities |
| High frequency component (HF) | Parasympathetic activity and the frequency of respiration |
| Ratio of absolute LF to HF power (LF/HF) | Sympathetic-parasympathetic balance |
