| Autor: |
Perszyk EE; Modern Diet and Physiology Research Center, New Haven, CT 06510, USA.; Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06511, USA., Hutelin Z; Modern Diet and Physiology Research Center, New Haven, CT 06510, USA.; Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06511, USA., Trinh J; Modern Diet and Physiology Research Center, New Haven, CT 06510, USA.; Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06511, USA., Kanyamibwa A; Modern Diet and Physiology Research Center, New Haven, CT 06510, USA.; Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06511, USA., Fromm S; Modern Diet and Physiology Research Center, New Haven, CT 06510, USA.; Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06511, USA., Davis XS; Modern Diet and Physiology Research Center, New Haven, CT 06510, USA.; Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06511, USA., Wall KM; Modern Diet and Physiology Research Center, New Haven, CT 06510, USA.; Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06511, USA., Flack KD; Department of Dietetics and Human Nutrition, College of Agriculture, Food, and Environment, University of Kentucky, Lexington, KY 40508, USA., DiFeliceantonio AG; Department of Human Nutrition, Foods and Exercise, Virginia Tech, College of Agriculture and Life Sciences, Blacksburg, VA 24061, USA.; Center for Transformative Research on Health Behaviors, Fralin Biomedical Research Institute at Virginia Tech, Roanoke, VA 24016, USA., Small DM; Modern Diet and Physiology Research Center, New Haven, CT 06510, USA.; Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06511, USA.; Department of Psychology, Yale University, New Haven, CT 06511, USA. |
| Abstrakt: |
Prior work suggests that actual, but not estimated, energy density drives the reinforcing value of food and that energy from fat and carbohydrate can interact to potentiate reward. Here we sought to replicate these findings in an American sample and to determine if the effects are influenced by body mass index (BMI). Thirty participants with healthy weight (HW; BMI 21.92 ± 1.77; M ± SD ) and 30 participants with overweight/obesity (OW/OB; BMI 29.42 ± 4.44) rated pictures of common American snacks in 120-kcal portions for liking, familiarity, frequency of consumption, expected satiety, healthiness, energy content, energy density, and price. Participants then completed an auction task where they bid for the opportunity to consume each food. Snacks contained either primarily carbohydrate, primarily fat, or roughly equal portions of fat and carbohydrate (combo). Replicating prior work, we found that participants with HW bid the most for combo foods in linear mixed model analyses. This effect was not observed among individuals with OW/OB. Additionally, in contrast with previous reports, our linear regression analyses revealed a negative relationship between the actual energy density of the snacks and bid amount that was mediated by food price. Our findings support altered macronutrient reinforcement in obesity and highlight potential influences of the food environment on the regulation of food reward. |
