The OPTIMISE Intervention for Reducing Meat Consumption in UK Adult Meat-eaters

NCT04961216 | Completed

• 1 other identifier: R71398/RE002
• Study Type: interventional
• Target: 151
• Locations: 1 country
• Sites: 1

Brief Summary

This randomised controlled trial will test the effectiveness of a self-regulation intervention for reducing meat consumption in people who are motivated to change their meat-eating habits.

Conditions

Diet Habit

Keywords

self-regulation; self-monitoring; goal-setting; meat reduction; multi-component intervention

Outcome Measures

Primary Outcomes (1)

• Change in mean daily meat consumption from baseline to follow-up 1, comparing intervention and control groups.

  Meat consumption was measured with meat-frequency questionnaires administered daily during the baseline week and follow-up 1.

  five weeks

Secondary Outcomes (8)

• Change in mean daily meat consumption from baseline to follow-up 2, comparing intervention and control groups.

  nine weeks

• Change in mean daily meat consumption from follow-up 1 to follow-up 2, comparing intervention and control groups.

  nine weeks

• Change in mean daily consumption of meat subgroups from baseline to both follow-ups, comparing intervention and control groups.

  five and nine weeks

• Change in meat-free self-efficacy from baseline to both follow-ups, comparing intervention and control groups.

  five and nine weeks

• Change in participants meat-eating identity from baseline to both follow-ups, comparing intervention and control groups.

  five and nine weeks

Other Outcomes (2)

• Outlier sensitivity analysis of primary outcome

  five weeks

• Barriers to adherence to meat reduction actions

  five weeks

Study Arms (2)

OPTIMISE intervention

EXPERIMENTAL

After a baseline week of self-monitoring their meat consumption, participants will receive health and environmental feedback on their consumption and will be prompted to think about how they could reduce their intake. They will be asked to pre-select strategies from a list of meat consumption reduction actions and set themselves a meat reduction goal. During the following four weeks (weeks 2-5), participants will be asked every morning to log their meat consumption of the previous day, plan one of their chosen actions and formulate an if-then plan. Participants will receive weekly feedback on their achieved meat reduction in comparison to week 1. After the completion of the fifth week (follow-up 1), participants will be asked to continue performing the actions they found useful for the next four weeks (weeks 6-9). During the ninth week (follow-up 2) participants will be invited back to log their meat intake.

Behavioral: OPTIMISE

Control

NO INTERVENTION

After a baseline week of self-monitoring their meat consumption participants will be asked to try and reduce their meat consumption over the next eight weeks, with no further guidance. They will be invited back to complete log their meat consumption of the previous day during weeks five and nine (follow-up 1 and 2).

Interventions

OPTIMISE BEHAVIORAL

Self-regulation intervention

OPTIMISE intervention

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Be willing and able to give informed consent
• Be resident in the UK
• Self report to speak English fluently
• Self-report to eat meat at least five times per week
• Be willing to reduce their meat intake
• Have access to devices compatible with the delivery format of the intervention

You may not qualify if:

• Enrolled in another dietary intervention study
• Trying to lose weight

Sponsors & Collaborators

• University of Oxford: lead

Study Sites (1)

Nuffield Department of Primary Care Health Sciences, University of Oxford

Oxford, OX2 6GG, United Kingdom

Location

Related Publications (1)

• Frie K, Stewart C, Piernas C, Cook B, Jebb SA. Effectiveness of an Online Programme to Tackle Individual's Meat Intake through SElf-regulation (OPTIMISE): A randomised controlled trial. Eur J Nutr. 2022 Aug;61(5):2615-2626. doi: 10.1007/s00394-022-02828-9. Epub 2022 Mar 4.

  PMID: 35244757 DERIVED

Related Links

• Pre-published statistical analysis plan

MeSH Terms

Conditions

Feeding Behavior; Self-Control

Condition Hierarchy (Ancestors)

Behavior, Animal; Behavior; Social Behavior

Study Officials

• Susan A Jebb, PhD

  University of Oxford

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor of Diet and Population Health

Model Details: Individually randomised, two-arm, parallel-group randomised controlled trial

Study Record Dates

• First Submitted: June 29, 2021
• First Posted: July 14, 2021
• Study Start: March 15, 2021
• Primary Completion: April 30, 2021
• Study Completion: May 26, 2021
• Last Updated: July 14, 2021

Record last verified: 2021-07

Data Sharing

• IPD Sharing: Will not share

Locations

GB (1)