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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT05173376
Other study ID # 803194
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date October 25, 2021
Est. completion date April 7, 2022

Study information

Verified date January 2023
Source University of Liverpool
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Reducing food portion size is a potential strategy to reduce energy intake. There is some evidence to suggest that individuals with lower socioeconomic position (SEP) intend to eat more from larger portions, suggesting that the effect of portion size on food intake might vary by SEP. However, no study has tested this by measuring actual food intake. This study examines whether reductions to the portion size of components of a main meal will reduce daily energy intake, and whether and how socioeconomic position (higher vs lower) moderates the portion size effect. 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).


Description:

See attached protocol document.


Recruitment information / eligibility

Status Completed
Enrollment 54
Est. completion date April 7, 2022
Est. primary completion date April 7, 2022
Accepts healthy volunteers Accepts Healthy Volunteers
Gender Female
Age group 18 Years and older
Eligibility Inclusion Criteria: - Female - 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: - taking medication which affects appetite - 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

Study Design


Related Conditions & MeSH terms


Intervention

Behavioral:
Portion size manipulation
The intervention was administered via changing portion sizes of foods served to participants.

Locations

Country Name City State
United Kingdom University of Liverpool Liverpool

Sponsors (2)

Lead Sponsor Collaborator
University of Liverpool European Research Council

Country where clinical trial is conducted

United Kingdom, 

Outcome

Type Measure Description Time frame Safety issue
Primary Daily energy intake Total energy (kcal) consumed from breakfast, lunch, dinner, dessert, snackbox, and any self-reported additional foods. 24 hours after intervention administered
Secondary Appetite Hunger and fullness sensations before and after laboratory-based meals (self-reported on visual analogue scales anchored at 0 'Not at all' and 100 'Extremely') 24 hours after intervention administered
Secondary Moderate-vigorous physical activity Moderate-vigorous physical activity (recorded using wearable activity tracker), operationalised as active minutes/day (logged for activities with a metabolic equivalent of >/3) 24 hours after intervention administered
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