Understanding Mechanisms of Exercise Behavior Change

Physical Activity Clinical Trial

Official title:

Understanding Mechanisms of Exercise Behavior Change

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03465800
• Other study ID #: 18-0008
• Status: Completed
• Phase: N/A
• Start date: February 26, 2018
• Est. completion date: July 11, 2018

Study information

• Verified date: October 2018
• 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 physical activity. 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 an active self-monitoring intervention condition in which no rewards are offered. Study participants will provide reports of their physical activity each day for three weeks, and in the two incentive conditions, they will receive small monetary rewards for their physical activity. 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: July 11, 2018
• Est. primary completion date: June 30, 2018
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Complete less than 150 minutes of moderate-vigorous physical activity weekly

• Daily access to the internet for 3 weeks following baseline research visit

• Have or are willing to create an account on PayPal

• Willing to wear a heart rate monitor watch during physical activity for 3 weeks

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

Exclusion Criteria:

• Diagnosis of cardiovascular, metabolic, or renal disease

Related Conditions & MeSH terms

• Incentives
• Overweight
• Overweight and Obesity
• Physical Activity

Intervention

Behavioral:
• self-monitoring
self-monitoring of physical activity
• daily incentives
daily incentive payments for physical activity
• delayed lump sum incentives
delayed lump sum payments for physical activity

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	Moderate-vigorous physical activity minutes	summed minutes of weekly moderate intensity physical activity & vigorous intensity physical activity	Week 3
Primary	Self-Efficacy for physical activity	8-item self-report scale measuring self-efficacy (Social Cognitive Theory, Bandura, 1977; also called "perceived behavioral control", Theory of Planned Behavior, Ajzen, 1985); scores are a mean of 8 items, scored 1-7 with higher scores indicative of greater self-efficacy	Week 3
Primary	Moderate-vigorous physical activity minutes	summed minutes of weekly moderate intensity physical activity & vigorous intensity physical activity	Week 5
Primary	Self-Efficacy for physical activity	8-item self-report scale measuring self-efficacy (Social Cognitive Theory, Bandura, 1977; also called "perceived behavioral control", Theory of Planned Behavior, Ajzen, 1985); scores are a mean of 8 items, scored 1-7 with higher scores indicative of greater self-efficacy	Week 5
Primary	Attitudes toward physical activity	12-item self-report scale (Theory of Planned Behavior, Ajzen, 1985); scores are a mean of 12 items scored from -5 to +5, with higher scores indicative of more positive attitudes	Week 3
Primary	Attitudes toward physical activity	12-item self-report scale (Theory of Planned Behavior, Ajzen, 1985); scores are a mean of 12 items scored from -5 to +5, with higher scores indicative of more positive attitudes	Week 5