Project Step II: The Effects of Incentives and Feedback on Promoting Walking Within Overweight and Obese Adults

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

61 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-06-01

Study Completion Date

2018-01-30

Brief Summary

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This study will evaluate the main effects of daily vs. weekly feedback and contingent vs. non-contingent incentives for increasing walking behavior among overweight and obese adults.

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Detailed Description

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Approximately 68% of adults are overweight or obese, which is associated with increased risk for health conditions, including cardiovascular disease, type 2 diabetes, and cancer. These individuals are more often sedentary than the general population, which compounds the risk for these same conditions. While the benefits of engaging in physical activity are well-established, few individuals are able to successfully increase activity to recommended levels. Existing intervention programs, often derived from theories such as social cognitive theory or related theories, have had limited success. Behavioral economics offers a promising alternative, suggesting that engagement in any behavior is based on the maximizing utility and happiness (i.e., weighing the cost and benefit of the behavior). Interventions based on this theory aim to increase the immediate benefit of engaging in physical activity, often using a financial incentive.

This study will last for 8 weeks. All participants will have the use of a FitBit for ongoing self-monitoring and a personalized step-count goal designed to help increase daily steps. Participants will receive feedback on reaching their goals either daily or weekly.

Conditions

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Physical Activity Sedentary Lifestyle Overweight and Obesity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Non-contingent incentives and weekly feedback

Participants will receive payment for participating in the study (regardless of goal attainment) and will receive weekly updates about their performance.

Group Type EXPERIMENTAL

Non-contingent incentives

Intervention Type BEHAVIORAL

Incentives are provided for participation

Weekly feedback

Intervention Type BEHAVIORAL

Text message feedback is delivered weekly summarizing the past week's progress

Non-contingent incentives and daily feedback

Participants will receive payment for participating in the study (regardless of goal attainment) and will receive daily updates about their performance.

Group Type EXPERIMENTAL

Non-contingent incentives

Intervention Type BEHAVIORAL

Incentives are provided for participation

Daily feedback

Intervention Type BEHAVIORAL

Text message feedback is delivered daily summarizing the current day's progress

Contingent incentives and weekly feedback

Participants will receive payment for meeting their daily goals and will receive weekly updates about their performance.

Group Type EXPERIMENTAL

Contingent incentives

Intervention Type BEHAVIORAL

Incentives are provided for attaining daily goals

Weekly feedback

Intervention Type BEHAVIORAL

Text message feedback is delivered weekly summarizing the past week's progress

Contingent incentives and daily feedback

Participants will receive payment for meeting their daily goals and will receive daily updates about their performance.

Group Type EXPERIMENTAL

Contingent incentives

Intervention Type BEHAVIORAL

Incentives are provided for attaining daily goals

Daily feedback

Intervention Type BEHAVIORAL

Text message feedback is delivered daily summarizing the current day's progress

Interventions

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Non-contingent incentives

Incentives are provided for participation

Intervention Type BEHAVIORAL

Contingent incentives

Incentives are provided for attaining daily goals

Intervention Type BEHAVIORAL

Weekly feedback

Text message feedback is delivered weekly summarizing the past week's progress

Intervention Type BEHAVIORAL

Daily feedback

Text message feedback is delivered daily summarizing the current day's progress

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* 25 kg/m2 ≤ BMI ≤ 45 kg/m2
* Age 18-70
* Currently inactive (engages in less than 6,000 steps/day on at least 4 of 7 days per week OR engaged in less than 10,000 steps /day on at least 5/7 days per week, confirmed by FitBit at baseline)
* Able to engage in moderate amount of walking
* Able to receive email/text messages from study staff