Understanding Mechanisms of Exercise Behavior Change

NCT03465800 | Completed

• 1 other identifier: 18-0008
• Study Type: interventional
• Target: 68
• Locations: 1 country
• Sites: 1

Brief 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.

Conditions

Overweight and Obesity; Physical Activity; Incentives

Keywords

overweight; obesity; physical activity; exercise

Outcome Measures

Primary Outcomes (6)

• Moderate-vigorous physical activity minutes

  summed minutes of weekly moderate intensity physical activity \& vigorous intensity physical activity

  Week 3

• 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

• Moderate-vigorous physical activity minutes

  summed minutes of weekly moderate intensity physical activity \& vigorous intensity physical activity

  Week 5

• 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

• 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

• 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

Study Arms (3)

Self-Monitoring

ACTIVE COMPARATOR

Participants self-monitor their physical activity

Behavioral: self-monitoring

Daily Incentives

EXPERIMENTAL

daily payments for physical activity

Behavioral: self-monitoring; Behavioral: daily incentives

Delayed Lump Sum Incentives

EXPERIMENTAL

lump sum payments for physical activity

Behavioral: self-monitoring; Behavioral: delayed lump sum incentives

Interventions

self-monitoring BEHAVIORAL

self-monitoring of physical activity

Daily Incentives; Delayed Lump Sum Incentives; Self-Monitoring

daily incentives BEHAVIORAL

daily incentive payments for physical activity

Daily Incentives

delayed lump sum incentives BEHAVIORAL

delayed lump sum payments for physical activity

Delayed Lump Sum Incentives

Eligibility Criteria

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

You may qualify if:

• 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

You may not qualify if:

• Diagnosis of cardiovascular, metabolic, or renal disease

Sponsors & Collaborators

• University of Colorado, Boulder: lead

Study Sites (1)

University of Colorado Boulder

Boulder, Colorado, 80309, United States

Location

MeSH Terms

Conditions

Overweight; Obesity; Motor Activity

Interventions

Blood Glucose Self-Monitoring

Condition Hierarchy (Ancestors)

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

Intervention Hierarchy (Ancestors)

Blood Chemical Analysis; Clinical Chemistry Tests; Clinical Laboratory Techniques; Diagnostic Techniques and Procedures; Diagnosis; Diagnostic Techniques, Endocrine; Monitoring, Physiologic; Self-Testing; Self Care; Therapeutics; Investigative Techniques

Study Design

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

Study Record Dates

• First Submitted: February 28, 2018
• First Posted: March 14, 2018
• Study Start: February 26, 2018
• Primary Completion: June 30, 2018
• Study Completion: July 11, 2018
• Last Updated: October 19, 2018

Record last verified: 2018-10

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)