B-30 Basic Science World Congress/Poster - Energy Balance, Appetite, and Energy Intake Wednesday, June 1, 2016, 1:00 PM - 6:00 PM Room: Exhibit Hall A/B
Caloric consumption is influenced by mental and physical exertion; however, the predictors of energy consumption are not understood.
PURPOSE: The purpose of this study was to examine predictors of eating behavior following a cognitive task, and to investigate physiological variables that could predict susceptibility to overeating following a cognitive task, including the relationship between eating behavior and VO2peak, waist circumference, and body fat percentage.
METHODS: Thirty-six college aged males and females participated in the study. Anthropometrics were assessed followed by estimation of VO2peak from a submaximal treadmill exercise test using indirect calorimetry. Participants were randomly assigned to one of two intervention groups: 1) mental work + exercise group, or 2) mental work + rest group. Visit order was counterbalanced. The mental work + rest group completed cognitive tasks followed by a short rest period and ad libitum meal. The mental work + exercise group also completed cognitive tasks and in place of the rest period were also asked to perform 15 minutes of high intensity interval exercise at 84% of their estimated VO2peak, followed by an ad libitum meal.
RESULTS: VO2peak (partial r = -0.46, p < 0.01) and sex (partial r = -0.51, p < 0.01) were related to overeating independent of each other, weight, body fat percentage, cognition, and change in cognition. Weight, percent body fat, waist circumference, cognition, and change in cognition were not related to overeating.
CONCLUSIONS: Lower aerobic fitness and male sex were predictive of overeating following a cognitive challenging task suggesting that improvements in aerobic fitness, particularly in men, may limit weight gain in the presence of stressful cognitive tasks.
This study was performed with pilot funds from the UAB Department of Human Studies