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

University of Liverpool

Status: Completed

Conditions: Food Selection; Diet, Healthy

Treatments: Behavioral: PACE labelling; Behavioral: Kcal labelling

Study type: Interventional

Funder types: Other

Identifiers

NCT04340804

803194 1B4

Details and patient eligibility

About

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).

Full description

See attached protocol documents.

Enrollment: 1,800 patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

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)

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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1,800 participants in 4 patient groups

Kcal labelling

Experimental group

Description:

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).

Treatment:

Behavioral: Kcal labelling

PACE labelling

Experimental group

Description:

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.

Treatment:

Behavioral: PACE labelling

Kcal and PACE labelling

Experimental group

Description:

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).

Treatment:

Behavioral: Kcal labelling

Behavioral: PACE labelling

No labelling

No Intervention group

Description:

Participants allocated to this group will only see on the screen the amount of food increasing or decreasing based how many times they tap on the corresponding keys.