Stress-induced visceral analgesia assessed non-invasively in rats is enhanced by prebiotic diet

Figure 2 Influence of water avoidance stress or no stress on visceral sensitivity to colorectal distension in rats fed standard or prebiotic (4% enzyme-treated rice fiber) diet ad libitum. A: Immediate visceral motor response (VMR) at day 1; B: Immediate VMR at day 10; C: VMR 24 h at day 11. Data are expressed as mean ± SE of number of animals indicated in parenthesis for each group. ^aP < 0.05 standard diet no stress vs standard diet water avoidance stress (WAS); ^cP < 0.05, ^dP < 0.01 enzyme-treated rice fiber (ERF) no stress vs ERF WAS; 2-way ANOVA followed by Bonferroni post hoc test. CRD: Colorectal distention.