TABLE 1.
Definition of normal ANX 3.0 autonomic measures25
| Autonomic function parameters | Normal values (bpms/Hz) |
|---|---|
| Resting sympathetic activity (LFa) | 0.5–10.0 |
| Resting parasympathetic activity (RFa) | 0.5–10.0 |
| Resting LFa/RFa | 0.4–3.0 |
| Sympathetic challenge (Valsalva) | Age adjusted: on average 28.0 < LFa <120.0 for the fourth decade. |
| Parasympathetic challenge (Deep breathing) | Age adjusted: on average 28.0 < LFa <109.0 for the fourth decade. |
| Parasympathetic response to sympathetic challenge (Valsalva or stand) | RFa increase <400% over baseline during Valsalva or absence of an increase in RFa with standing |
| Sympathetic response to stand | LFa increase between 10% and 500% over baseline during stand |