Poster Topical Area: Obesity
Location: Hall D
Poster Board Number: 729
Objective: To compare the level of appetite and desire for specific foods in long-term bariatric patients with weight regain (WR), weight maintenance (WM) and obese non-operated control subjects (CON).
Methods: Analytical cross-sectional study with adult women. All bariatric patients underwent Roux-en-Y Gastric Bypass for more than 24 months. The WR group (n=20) presented a WR of at least 10% in relation to the minimum post-surgical weight. The WM group (n=20) presented loss of at least 50% of the pre-operative excess weight and maintenance after this. Patients non-operated with clinically severe obesity comprised the CON group (n=20). Pregnant women and women who became pregnant in the postoperative period were excluded. The level of appetite and desire for specific foods, such as sweet, fatty and savory, were assessed using a visual analog scale (VAS), which consisted of a horizontal line of 100mm, with the ends representing the 2 maximum response points. The VAS evaluations were applied during the study at fasting, immediately after the test meal (270 kcal meal with mixed solid and liquid foods) and at 180 minutes. The incremental area under the curve (iAUC) were calculated and Mann-Whitney, One-way ANOVA or Kruskal-Wallis were applied to comparison between the groups. The Friedman test was performed to verify the effect of time on the variables. For statistical significance was adopted p < 0.05.
Results: The mean age was 40.0 ± 9.3 years. Among bariatric groups, the mean postoperative time was 67.1 ± 37.5 months (WR = 52.3 ± 33 and WM = 81.9 ± 36.6; p = 0.003). There were no statistical differences of VAS appetite perception between groups (WR = 707.7 ± 84.1; WM = 517.3 ± 112.7 and CON = 542.0 ± 98.7; p = 0.21), and desire for sweet (p = 0.57), fatty (p = 0.14) and savory food (p = 0.41). The temporal effect of the test meal was similar between groups, reaching a peak in the immediate postprandial test (p < 0.05 within groups) and returning to the basal levels after 180 minutes. Regarding the desire for sweet and fatty food, the CON had no temporal effect (p = 0.2 and p = 0.14, respectively), although there were no significant differences between groups<.br />
Conclusions: Weight regain is not associated with appetite level and desire for specific foods in long-term bariatric patients.
Master of Science Student
Universidade de Brasília
Brasília, Distrito Federal, Brazil