Increasing Availability of Lower Energy Meals on Food Choice and Intake

Study Results

Results pending

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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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

80 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-04-13

Study Completion Date

2021-07-05

Brief Summary

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This study will examine the effectiveness of a structural intervention (baseline proportion of lower energy ready meals vs increased proportion of lower energy ready meals) on calories (kcal) ordered and consumed. The study will use a within-subjects design, meaning all participants will be exposed to both conditions (baseline vs increased lower energy meal menus). The procedure will involve participants placing orders for supermarket ready meals, which are then delivered to their homes for their consumption. This study will also investigate whether the effectiveness of the intervention varies, depending on socioeconomic position (SEP). The primary hypothesis is that increasing proportion of lower energy options will decrease total kcal ordered and consumed, and that there will be no difference between higher and lower SEP. To address the limited evidence on longer term impacts of dietary interventions on daily energy intake, the present study will also examine post-meal energy consumption up to midnight on the following day. Finally, this study will explore the psychological processes that might underlie the effectiveness of the intervention among individuals with higher and lower SEP; namely, food choice motives, satiety responsiveness, plate clearing tendencies, and food waste concerns.

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Detailed Description

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See attached protocol documents.

Conditions

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Diet, Healthy Food Selection Obesity Eating Behavior

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Baseline availability

Baseline availability of lower energy meal options

Group Type ACTIVE_COMPARATOR

Manipulation of availability of lower energy meal options

Intervention Type OTHER

Menus provided differ in % of menu options that are higher vs. lower in energy

Increased availability

Increased availability of lower energy meal options

Group Type EXPERIMENTAL

Manipulation of availability of lower energy meal options

Intervention Type OTHER

Menus provided differ in % of menu options that are higher vs. lower in energy

Interventions

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Manipulation of availability of lower energy meal options

Menus provided differ in % of menu options that are higher vs. lower in energy

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* UK (United Kingdom) residents, aged 18 or over
* Fluent in English
* Have access to a phone/tablet/computer device which has access to Internet and a functioning camera
* Willing to consume two supermarket ready meals
* Have access to a functioning microwave and oven for the preparation of the ready meals

Exclusion Criteria

* Taking part more than once
* Another member of the same household has participated in the study (Multiple members of the same household will not be allowed to take part)
* Current or historic diagnosed eating disorders
* Currently on any medication which affects appetite
* Any of the following dietary restrictions, intolerances, or allergies (Vegetarian, vegan, gluten-free, sugar-free, dairy/lactose-free, food allergy - such as milk, eggs, nut, wheat, fish, etc)
* History of severe childhood allergies, anaphylaxis or anaphylactic shock

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Responsible Party

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Eric Robinson

Reader in Psychological Sciences

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Eric Robinson, PhD

Role: PRINCIPAL_INVESTIGATOR

Study Principal Investigator

Locations

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University of Liverpool

Liverpool, Merseyside, United Kingdom

Site Status

Countries

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United Kingdom

Study Documents

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Document Type: Study Protocol

Protocol on the Open Science Framework (OSF)

View Document

Document Type: Statistical Analysis Plan

View Document

Document Type: Individual Participant Data Set

The study protocol and statistical analysis plan were pre-registered on the OSF prior to starting recruitment. IPD will be made available when results are published.

View Document