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

Table 2 Baseline visceromotor response to colorectal distension at day 0

CRD (mmHg)	Standard diet1		ERF diet1
	No stress (n = 7) VMR (%)2	WAS (n = 7) VMR (%)2	No stress (n = 9) VMR (%)2	WAS (n = 8) VMR (%)2
10	-0.3 ± 1.2	0.9 ± 1.9	2.8 ± 2.8	0.89 ± 1.0
20	5.1 ± 1.8a	26.8 ± 12.2	30.6 ± 12.2	30.7 ± 7.0
40	71.4 ± 6.2	77.3 ± 11.8	71.1 ± 11.2	88.7 ± 7.8
60	100 ± 0	100 ± 0	100 ± 0	100 ± 0

¹Rats were fed standard or 4% enzyme-treated rice fiber (ERF) diet (2 groups each before to be assigned to no stress or water avoidance stress, WAS) starting at the weaning period for 37 d before performing the baseline visceromotor response (VMR) to colorectal distension (CRD);

²Each value represents the mean ± SE of n as indicated in parenthesis;

^aP < 0.05 vs all other groups at 20 mmHg - 2-way ANOVA, Bonferroni post test.