Effects of CRH on HRV during the baseline period after injection.

<p>(<b>A</b>) HR (beats/min), (<b>B</b>) HF power, and (<b>C</b>) LF/HF ratio in HCs administered with saline (n = 16) or CRH (n = 16); and patients with IBS administered with saline (n = 16) or CRH (n = 16). Results are represented as mean ± SD. *<i>P</i> < .05 when compared with placebo; baseline after CRH or saline injection, paired t-test. LF, low frequency; HF, high frequency; HCs, healthy controls.