Figure 2.
Peak power ratio of low to high frequency (PPLF/ PPHF) scores (with standard error bars) are shown at baseline, after balloon placement, and during sigmoid distension for control and irritable bowel syndrome (IBS) subjects, and for male and female IBS subjects. A group main effect (p = 0.0068) was seen for the IBS versus the control group, with higher sympathetic balance in the IBS group. A sex main effect (p = 0.0031) was seen between male and female IBS patients, with higher sympathetic balance in the male group.