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Change in MRI colonic gas from fasting values for each test drink (n=19). Data shown are mean±95% CI. (A) Time course over the duration of the study, showing significantly greater gas production for inulin compared with psyllium, dextrose and inulin and psyllium coadministration at 360 min (p=0.0097). (B) Area under the curve (AUC) for individual participants after each test drink (on the x axis). Inulin produced a significantly larger AUC than the other three test drinks. *p<0.05.
