SEP and the Impact of Portion Size on Daily Energy Intake
NCT ID: NCT05173376
Last Updated: 2023-01-10
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
54 participants
INTERVENTIONAL
2021-10-25
2022-04-07
Brief Summary
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In a crossover experiment, participants will be served all meals in the lab on two separate days, with the portion size of main meal components at lunch and dinner manipulated (i.e. smaller on one day vs larger on the other day). All other foods offered are identical. Food intake from the portion-manipulated lunch and dinner, as well as all other meal components (breakfast, dessert, seconds, snacks) will be measured, and any additional food consumed by the participant will be measured using self-report, giving total daily energy intake (kcal).
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
CROSSOVER
PREVENTION
SINGLE
Study Groups
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Larger portions
the main meal component (lunch/dinner) served to participants in the laboratory, reflecting 100% portion. All other foods are identical across conditions (e.g. sides, seconds, breakfast, dessert, snacks).
Portion size manipulation
The intervention was administered via changing portion sizes of foods served to participants.
Smaller portions
the main meal component (lunch/dinner) served to participants in the laboratory, reflecting 66% portion (i.e. reduced portion size). All other foods are identical across conditions (e.g. sides, seconds, breakfast, dessert, snacks).
Portion size manipulation
The intervention was administered via changing portion sizes of foods served to participants.
Interventions
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Portion size manipulation
The intervention was administered via changing portion sizes of foods served to participants.
Eligibility Criteria
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Inclusion Criteria
* UK (United Kingdom) residents, aged 18 or over
* Fluent in English
* willing to consume the test foods
* Self report liking of test foods
* BMI between 22.5 - 32.5kg2
Exclusion Criteria
* currently pregnant
* history of eating disorders
* currently on a diet to lose weight
* food allergies, intolerances or specific dietary requirements (including being vegetarian or vegan)
* participated in 2018 Mood Study
* currently participating in another study where meals are provided
18 Years
FEMALE
Yes
Sponsors
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European Research Council
OTHER
University of Liverpool
OTHER
Responsible Party
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Eric Robinson
Principal Investigator (Reader in Psychological Sciences)
Principal Investigators
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Eric Robinson, PhD
Role: PRINCIPAL_INVESTIGATOR
Study Principle Investigator
Locations
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University of Liverpool
Liverpool, , United Kingdom
Countries
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References
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Langfield T, Clarke K, Marty L, Jones A, Robinson E. Socioeconomic position and the influence of food portion size on daily energy intake in adult females: two randomized controlled trials. Int J Behav Nutr Phys Act. 2023 Apr 27;20(1):53. doi: 10.1186/s12966-023-01453-x.
Provided Documents
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Document Type: Study Protocol and Statistical Analysis Plan
Study Documents
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Document Type: Statistical Analysis Plan
View DocumentDocument Type: Individual Participant Data Set
The study protocol and statistical analysis plan were pre-registered on the OSF prior to starting recruitment. Participant dataset (anonymised) will be made available when results are published.
View DocumentOther Identifiers
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803194
Identifier Type: -
Identifier Source: org_study_id
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