Understanding Mechanisms of Health Behavior Change

Overweight and Obesity Clinical Trial

Official title:

Understanding Mechanisms of Health Behavior Change

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03192254
• Other study ID #: 16-0700
• Status: Completed
• Phase: N/A
• Start date: July 13, 2017
• Est. completion date: March 30, 2018

Study information

• Verified date: July 2023
• Source: University of Colorado, Boulder
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This research seeks to examine psychological factors that may impact relationship between incentives and health behavior engagement, specifically fruit and vegetable consumption. Additionally, it will compare the impact of two different incentive schedules on behavior engagement, one providing immediate rewards (i.e. rewards received on a daily basis) and another providing delayed rewards (i.e. rewards received at the end of the study period), with a control condition in which no rewards are offered. Study participants will provide reports of their fruit and vegetable consumption each day for three weeks, and in the two incentive conditions, they will receive small monetary rewards for their fruit and vegetable consumption. Following the three week reporting and reward period, participants will complete two additional assessments, measuring psychological constructs and behavior engagement following the cessation of rewards. The study will also examine how cognitive and anthropomorphic factors may contribute to intervention response and the effects on psychological constructs.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 68
• Est. completion date: March 30, 2018
• Est. primary completion date: February 21, 2018
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Consume fewer than 3 servings/day of fruits and vegetables

• Daily access to internet for 3 weeks following baseline session

• Have or are willing to create an account on PayPal

• BMI greater than or equal to 25, from self-reported height and weight

Exclusion Criteria:

-

Related Conditions & MeSH terms

• Diet Modification
• Incentives
• Overweight
• Overweight and Obesity

Intervention

Behavioral:
• self-monitoring
recording fruit and vegetable consumption
• daily monetary incentives
daily payments for consuming fruits and vegetables
• delayed lump sum monetary incentives
lump sum payments for consuming fruits and vegetables

Locations

Country	Name	City	State
United States	University of Colorado Boulder	Boulder	Colorado

Sponsors (1)

Lead Sponsor	Collaborator
University of Colorado, Boulder

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Fruit and vegetable consumption, servings per week		3 Weeks
Primary	Fruit and vegetable consumption, servings per week		5 Weeks
Primary	Perceived behavioral control scale score		3 Weeks
Primary	Perceived behavioral control scale score		5 Weeks
Primary	Attitude scale score		3 Weeks
Primary	Attitude scale score		5 Weeks
Secondary	Intrinsic motivation scale score		3 Weeks
Secondary	Intrinsic motivation scale score		5 Weeks