McLeod_James_Brunstrom_Witcomb_2019_ACCEPTED.pdf (244.59 kB)
The influence of expected satiety on portion size selection is reduced when food is presented in an ‘unusual’ meal context
journal contribution
posted on 2020-12-05, 00:33 authored by Chris McLeodChris McLeod, Lewis JamesLewis James, JM Brunstrom, Gemma WitcombGemma WitcombResearch shows that expected satiety is highly correlated with ideal portion size, however this correspondence has not been explored when a food is presented in an ‘unusual’ (incongruous) meal context. This study's aim was to explore whether expected satiety influences portion selection to the same extent in both congruous and incongruous meal contexts. Forty participants completed two trials (one at breakfast and one at lunch) on separate days in a randomised counterbalanced order. They completed measures of expected satiety and ideal portion size for four typical breakfast foods and four typical lunch foods, using a bespoke computer program. Our results showed a significant difference between expected satiety and ideal portion size for lunch foods presented at breakfast time (an incongruous meal context; t(39) = 2.95, p = 0.02). There was no significant difference between expected satiety and ideal portion size in the other incongruous meal context (breakfast foods at lunch; t(39) = 2.10, p = 0.17) or in congruous meal contexts (breakfast foods at breakfast time, lunch foods at lunch time; both t(39) ≤ −0.15, p > 0.999). These results suggest that expected satiety does not have as strong an influence on portion selection when food is presented in an unusual context. Furthermore, in such contexts, smaller portions were selected 1) to stave off hunger until the next meal and 2) as ideal portions compared to in more usual meal contexts. Research is warranted to explore this finding further to understand its implications for weight management.
History
School
- Sport, Exercise and Health Sciences
Published in
AppetiteVolume
147Publisher
Elsevier BVVersion
- AM (Accepted Manuscript)
Rights holder
© Elsevier Ltd.Publisher statement
This paper was accepted for publication in the journal Appetite and the definitive published version is available at https://doi.org/10.1016/j.appet.2019.104550.Acceptance date
2019-12-03Publication date
2019-12-05Copyright date
2020ISSN
0195-6663Publisher version
Language
- en
Depositor
Dr Gemma Witcomb. Deposit date: 9 December 2019Article number
104550Usage metrics
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