Microstructural changes in human ingestive behavior after Roux-en-Y gastric bypass during liquid meals.

Both the RYGB and healthy-weight control groups showed a trend of decreased liking of the stimulus and of increased postprandial nausea over time, with a more pronounced change from baseline in the RYGB group.

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Here, the effect of time became nonsignificant for both groups after post hoc adjustment (RYGB, F (variation between sample means/variation within the samples) = 4.19, P = 0.052; control, F = 0.04, P = 1), while the effect of group remained highly significant at all time points.

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