Table 3. Pearson correlation coefficients between left ventricular rotational parameters and standard cardiovascular reflex tests in healthy volunteers.
| Peak basal LV rotation | Peak apical LV rotation | Peak LV twist | |
|---|---|---|---|
| Parasympathetic function | |||
| Heart rate response to deep breathing | 0.146 (P=0.550) | 0.032 (P=0.901) | −0.452 (P=0.052) |
| Valsalva ratio | 0.529 (P=0.019) | −0.534 (P=0.022) | −0.467 (P=0.044) |
| 30/15 ratio | −0.164 (P=0.501) | 0.346 (P=0.160) | −0.058 (P=0.815) |
| Sympathetic function | |||
| Sustained handgrip test | 0.242 (P=0.319) | −0.150 (P=0.554) | −0.303 (P=0.207) |
| Systolic blood pressure response to standing | 0.202 (P=0.407) | 0.012 (P=0.966) | 0.173 (P=0.479) |
| Autonomic Neuropathy Score | −0.391 (P=0.098) | 0.077 (P=0.763) | 0.393 (P=0.096) |