Baseline autonomic nervous system (ANS) measures
| ANS measure | Controls | IBS | Subject group effect | ||
|---|---|---|---|---|---|
| Males (n = 29) | Females (n = 22) | Males (n = 64) | Females (n = 63) | ||
| Values are mean (SD). | |||||
| IBS, irritable bowel syndrome; PPHF, peak power high frequency; PPR, peak power ratio. | |||||
| Mean baseline values of PPHF (parasympathetic) and PPR (sympathetic balance) are shown for male and female IBS and control subjects. A significant effect of subject group was seen for both PPHF and PPR. | |||||
| PPHF | 41.6 (22.2) | 44.1 (18.9) | 31.5 (13.8) | 45.2 (20.8) | p = 0.001 |
| PPR | 2.0 (1.5) | 1.6 (0.9) | 3.2 (2.6) | 1.7 (1.1) | p<0.001 |