Women who are motivated to eat and discount the future are more obese.
Journal Article (Journal Article)
Objective
Food reinforcement and delay discounting (DD) independently predict body mass index (BMI), but there is no research studying whether these variables interact to improve prediction of BMI.Methods
BMI, the relative reinforcing value of high (PMAXHED ) and low (PMAXLED ) energy dense food, and DD for $10 and $100 future rewards (DD10 , DD100 ) were measured in 199 adult females.Results
PMAXHED (P = 0.017), DD10 (P = 0.003), and DD100 (P = 0.003) were independent predictors of BMI. The interaction of PMAXLED × DD10 (P = 0.033) and DD100 (P = 0.039), and PMAXHED × DD10 (P = 0.038) and DD100 (P = 0.045) increased the variance accounted for predicting BMI beyond the base model controlling for age, education, minority status, disinhibition, and dietary restraint. Based on the regression model, BMI differed by about 2 BMI units for low versus high food reinforcement, by about 3 BMI units for low versus high DD, and by about 4 BMI units for those high in PMAXHED , but low in DD versus high in PMAXHED and high in DD.Conclusion
Reducing DD may help prevent obesity and improve treatment of obesity in those who are high in food reinforcement.Full Text
Duke Authors
Cited Authors
- Epstein, LH; Jankowiak, N; Fletcher, KD; Carr, KA; Nederkoorn, C; Raynor, HA; Finkelstein, E
Published Date
- June 2014
Published In
Volume / Issue
- 22 / 6
Start / End Page
- 1394 - 1399
PubMed ID
- 24311480
Pubmed Central ID
- PMC4007365
Electronic International Standard Serial Number (EISSN)
- 1930-739X
International Standard Serial Number (ISSN)
- 1930-7381
Digital Object Identifier (DOI)
- 10.1002/oby.20661
Language
- eng