Provision of Small vs. Large Portion Sizes and Later Food Intake

Eating Behavior Clinical Trial

Official title:

Provision of Small vs. Large Portion Sizes and Later Self-selected Food Intake: 3 Experimental Laboratory Studies in UK Participants

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03241576
• Other study ID #: 463882A
• Status: Completed
• Phase: N/A
• First received: August 2, 2017
• Last updated: August 4, 2017
• Start date: May 1, 2015
• Est. completion date: April 1, 2017

Study information

• Verified date: August 2017
• Source: University of Liverpool
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

In 3 laboratory experiments the effect that receiving a small vs. large portion size of food has on later intake of that food was examined

Description:

Historical increases in the size of commercially available food products have been linked to the emergence of a worldwide obesity crisis. Although the acute effect portion size has on food intake is well established, the effect that exposure to smaller portion sizes has on future portion size selection is yet to be examined.We tested whether reducing a food portion size may 'renormalize' perceptions of what constitutes a normal amount of food to eat and result in people selecting and consuming smaller portions of that food in future. Across three experiments participants were served a large or smaller portion of food. In experiments 1-2, twenty four hours later participants freely selected and consumed a portion of that food. In experiment 3, one week later participants reported on their preferred portion size of that food.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 307
• Est. completion date: April 1, 2017
• Est. primary completion date: April 1, 2017
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• 18 years or older

Exclusion Criteria:

• History of food allergy, eating disorder or currently dieting to lose weight

Related Conditions & MeSH terms

• Eating Behavior

Intervention

Behavioral:
• Small portion size provision
The intervention is the small meal size participants are provided with during a lunchtime session in the laboratory.
• Large portion size provision
The intervention is the large meal size participants are provided with during a lunchtime session in the laboratory.

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
University of Liverpool

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Later food intake (24 hour)	Amount of the lunchtime food later chosen and consumed	Measured 24 hours after random allocation (experiments 1 and 2)
Primary	Later food intake (7 days)	Amount of the lunchtime food later chosen and consumed	Measured 7 days after allocation (experiment 3)