Understanding Mechanisms of Exercise Behavior Change

NCT ID: NCT03465800

Last Updated: 2018-10-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

68 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-02-26

Study Completion Date

2018-07-11

Brief Summary

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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.

Detailed Description

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Conditions

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Overweight and Obesity Physical Activity Incentives

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

SINGLE

Participants

Study Groups

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Self-Monitoring

Participants self-monitor their physical activity

Group Type ACTIVE_COMPARATOR

self-monitoring

Intervention Type BEHAVIORAL

self-monitoring of physical activity

Daily Incentives

daily payments for physical activity

Group Type EXPERIMENTAL

self-monitoring

Intervention Type BEHAVIORAL

self-monitoring of physical activity

daily incentives

Intervention Type BEHAVIORAL

daily incentive payments for physical activity

Delayed Lump Sum Incentives

lump sum payments for physical activity

Group Type EXPERIMENTAL

self-monitoring

Intervention Type BEHAVIORAL

self-monitoring of physical activity

delayed lump sum incentives

Intervention Type BEHAVIORAL

delayed lump sum payments for physical activity

Interventions

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self-monitoring

self-monitoring of physical activity

Intervention Type BEHAVIORAL

daily incentives

daily incentive payments for physical activity

Intervention Type BEHAVIORAL

delayed lump sum incentives

delayed lump sum payments for physical activity

Intervention Type BEHAVIORAL

Eligibility Criteria

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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
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Colorado, Boulder

OTHER

Sponsor Role lead

Responsible Party

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Angela Bryan

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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University of Colorado Boulder

Boulder, Colorado, United States

Site Status

Countries

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United States

Other Identifiers

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18-0008

Identifier Type: -

Identifier Source: org_study_id

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