Summary of statistically significant exercise-related group differences in cerebral activation during bladder distension (20 cm H2O). Significant increases ‘ + ‘ or decreases ‘-’ in regional cerebral blood flow are noted (Student’s t-test, p < 0.05, cluster >100 contiguous significant voxels, n = 10–12 per group) in the left and the right hemisphere (L/R). or indicates significant group differences was lost after correction for false discovery rate at the cluster level. Abbreviations are based on the rat brain atlas [28] with modifications.