Eating rate and satiation with a caloric beverage

Abstract

We have shown enhanced satiation with slow eating. However, subjects drank more water when eating slowly. Thus, we examined the influence of eating rate on satiation when a caloric beverage is offered. In a randomized design, quick (Q) and slow (S) eating rates were compared in 25 females (20.2±4.8y; BMI=21.3±2.2). After a morning of controlled food and beverage intake and activity, they consumed an ad libitum mixed‐macronutrient lunch and apple juice. Hunger (H), satiety, desire‐to‐eat (DTE), and thirst (T) were rated on visual analogue scales every 5min up to 30min, at 45 & 60min. Q and S conditions were compared by paired t‐tests. Meal durations and eating rates were 8±3min & 27±8min, 106±37Kcal/min & 30±9Kcal/min during the Q & S conditions, respectively (P<0.001 for both). S eating decreased food intake (Q=674±140Kcal; S=598±152Kcal; P<0.05) and increased beverage intake as compared to Q eating (Q=128±59Kcal; S=176±86Kcal; P<0.01). However, no differences occurred in total energy consumed at lunch (Q=802±177Kcal; S=774±195Kcal; P>0.05). At 45 & 60min H and DTE were higher in the Q condition (P<0.05). T was lower at 25, 30, 45 & 60min for the S condition (P<0.05). Regardless of the beverage served, eating slowly can effectively decrease food intake, but it tends to increase beverage consumption. Despite similar ad libitum total energy intake, lower H & DTE scores may support a role of slow eating in satiety.