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OpenTrials
Completed

NCT Number: NCT03522727

Using Implementation Intentions to Self-incentivise Weight-loss

The aim of the present research is to test the effect of helping people to reward themselves when they have successfully lost weight and the impact this will have on subsequent weight. Each participant will be randomly allocated to one of four conditions. The trial requires 200 participants to perform a fully powered statistical analysis. The four conditions are: (1) a control condition, (2) intervention 1 (form a single self-incentivising implementation intention from a drop-down menu), (3) intervention 2 (form multiple self-incentivising implementation intentions from a drop-down menu), or (4) intervention 3 (asked to form a single self-incentivising implementation intention of their own devising). The main outcome measure will be BMI, which will be self-reported.

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Key information

Conditions

Overweight Body Weight Nutrition Disorders Nutritional and Metabolic Diseases Overnutrition Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

18 year–100 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Online study, Manchester, United Kingdom

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Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Aged 18+

Exclusion criteria

  • Unable or unwilling to complete questionnaire

Treatment and study plan

Single self-incentivising implementation intention

Behavioral

Participants are asked to form a single self-incentivising implementation intention (if-then plans)

Multiple self-incentivising implementation intentions

Behavioral

Participants are asked to form multiple self-incentivising implementation intentions (if-then plans)

Self-generated self-incentivising implementation intentions

Behavioral

Participants are asked to form a self-incentivising implementation intention (if-then plans) without a drop-down menu

Primary outcomes

  1. Body Mass Index

    Time frame: 4 weeks

    Self-reported

  2. Actual Use of Self-Rewards

    Time frame: 4 weeks

    Self-reported

Secondary outcomes

  1. Capabilities, opportunities and motivations

    Time frame: 4 weeks

    Self-reported

Sponsors and collaborators

Lead sponsor

University of Manchester

Other

Registry information

Important dates

Study start
2018
Primary completion
2018
Study completion
2018
First posted
May 11, 2018
Registry last updated
Oct 23, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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