Understanding Mechanisms of Health Behavior

Fruit and Vegetable Consumption Clinical Trial

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02594319
• Other study ID #: 14-0684
• Status: Completed
• Phase: N/A
• Start date: February 2015
• Est. completion date: June 2015

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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 61
• Est. completion date: June 2015
• Est. primary completion date: June 2015
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Consume fewer than 5 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 Exclusion Criteria: -

Related Conditions & MeSH terms

• Fruit and Vegetable Consumption
• Incentive Interventions

Intervention

Behavioral:
• Monetary incentives

• Self monitoring

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
University of Colorado, Boulder

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Fruit and Vegetable Consumption, servings per week		3 weeks
Primary	Perceived Behavioral Control scale score		3 weeks
Primary	Attitudes scale score		3 weeks
Primary	Intrinsic Motivation scale score		3 weeks
Primary	Fruit and vegetable consumption, servings per week		5 weeks
Primary	Perceived Behavioral Control scale score		5 weeks
Primary	Attitudes scale score		5 weeks
Primary	Intrinsic Motivation scale score		5 weeks
Secondary	Perceived Stress Scale score		3 weeks
Secondary	Perceived Stress Scale score		5 weeks