Preoperative liking and wanting for sweet beverages as predictors of body weight loss after Roux-en-Y gastric bypass and sleeve gastrectomy.

ABSTRACT: BACKGROUND/OBJECTIVES:Patients who receive Roux-en-Y gastric bypass (RYGB) lose more weight than those who receive vertical sleeve gastrectomy (VSG). RYGB and VSG alter hedonic responses to sweet flavor, but whether baseline differences in hedonic responses modulate weight loss after RYGB or VSG remains untested. PARTICIPANTS/METHODS:Male and female candidates (n?=?66) for RYGB or VSG were recruited and tested for their subjective liking and wanting ratings of sucrose solutions and flavored beverages sweetened with aspartame. Participants were classified by unsupervised hierarchical clustering for their liking and wanting ratings of sucrose and aspartame. Participant liking ratings were also used in a supervised classification using pre-established categories of liking ratings (liker, disliker, and inverted u-shape). Effects of categories obtained from unsupervised or supervised classification on body weight loss and their interaction with surgery type were analyzed separately at 3 and 12 months after surgery using linear models corrected for sex and age. RESULTS:RYGB participants lost more body weight compared with VSG participants at 3 and 12 months after surgery (P?

SUBMITTER: Perez-Leighton CE 

PROVIDER: S-EPMC7174088 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature