Effect of kcal and PACE Labelling on Self-served Portion Size

Not Applicable

Completed

• Conditions: Food Selection; Diet, Healthy
• Interventions: Behavioral: Kcal labelling; Behavioral: PACE labelling

• Registration Number: NCT04340804
• Lead Sponsor: University of Liverpool

Brief Summary

Participants will take part in an online survey. They will be asked to choose the amount of food they would like to eat based on pictures of 18 dishes sequentially displayed on the screen. They will be randomly allocated to four different groups: kcal labelling, PACE labelling (Physical Activity Calorie Equivalent: minutes to walk to burn off the calories), kcal and PACE labelling combined, no labelling, in a between subject design. The main outcome variable is the total "self-served" energy for each dish (in kcal).

Detailed Description

See attached protocol documents.

Study Timeline

• Study First Submitted: 2020-04-07
• Study First Submitted QC: 2020-04-07
• Study First Posted: 2020-04-10
• Study Start: 2020-04-13
• Primary Completion: 2020-04-13
• Study Completion: 2020-05-13
• Status Verified: 2020-11
• Last Update Submitted: 2020-11-02
• Last Update Posted: 2020-11-03

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 1800

Inclusion Criteria

• United Kingdom residents
• Age ≥ 18
• Fluent in English
• Have access to a computer and Internet

Exclusion Criteria

• Have any dietary restriction (vegetarian, vegan, gluten-free, sugar-free, diary or lactose free, food allergy)

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Kcal and PACE labelling	Kcal labelling	Participants allocated to this group will see on the screen the amount of food increasing or decreasing based on how many times they tap on the corresponding keys and a real-time kcal and PACE counters synchronised to the food amount changes (i.e., increasing/decreasing).
Kcal labelling	Kcal labelling	Participants allocated to this group will see on the screen the amount of food increasing or decreasing based on how many times they tap on the corresponding keys and a real-time kcal counter synchronised with the food amount changes (i.e., increasing/decreasing).
PACE labelling	PACE labelling	Participants allocated to this group will see on the screen the amount of food increasing or decreasing based on how many times they tap on the corresponding keys and a real-time PACE counter (as minutes needed to walk to burn off the calories) synchronised to the food amount changes (i.e., increasing/decreasing) with 4 min being equivalent to 20 kcal.
Kcal and PACE labelling	PACE labelling	Participants allocated to this group will see on the screen the amount of food increasing or decreasing based on how many times they tap on the corresponding keys and a real-time kcal and PACE counters synchronised to the food amount changes (i.e., increasing/decreasing).

Primary Outcome Measures

Name	Time	Method
Total self-served energy (kcal)	10 minutes (the time frame denotes time taken to perform the portion selection task and there is no follow up)	Energy content of the portion selected for each dish.

Secondary Outcome Measures

Name	Time	Method
Kcal influence	3 minutes (the time frame denotes time taken to fill in the debriefing questionnaire and there is no follow up)	Whether kcal content influences the quantity of self-served food
PACE influence	3 minutes (the time frame denotes time taken to fill in the debriefing questionnaire and there is no follow up)	Whether physical activity energy equivalent influences the quantity of self-served food.

Trial Locations

Locations (1)

University of Liverpool; 🇬🇧 Liverpool, Merseyside, United Kingdom