CalFitness Smartphone-Delivered Physical Activity Intervention With Messaging

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

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-02-01

Study Completion Date

2017-05-31

Brief Summary

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The overall goal of this study is to test personalized mobile phone-based physical activity interventions among students at the University of California, Berkeley. Most physical fitness applications for smartphones and activity trackers use a constant goal for the number of steps each day. However, if the step goals are dynamically adjusted according to past behavior, then the corresponding goals may encourage individuals to increase their physical activity level. This study consists of a randomized controlled trial in which we are assessing the efficacy of four different algorithms for calculating personalized goals for the number of steps each day and for determining which motivational messages to send each day.

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Detailed Description

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Conditions

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Sedentary Lifestyle Physical Activity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Constant Steps Goal

Step Goal Delivery by Smartphone

Group Type ACTIVE_COMPARATOR

Step Goal Delivery by Smartphone

Intervention Type BEHAVIORAL

Step Goal Delivery by Smartphone

Averaged Steps Goals and Random Messages

Step Goal Delivery by Smartphone Message Delivery by Smartphone

Group Type EXPERIMENTAL

Step Goal Delivery by Smartphone

Intervention Type BEHAVIORAL

Step Goal Delivery by Smartphone

Message Delivery by Smartphone

Intervention Type BEHAVIORAL

Message Delivery by Smartphone

Algorithm Steps Goal and Random Messages

Step Goal Delivery by Smartphone Message Delivery by Smartphone

Group Type EXPERIMENTAL

Step Goal Delivery by Smartphone

Intervention Type BEHAVIORAL

Step Goal Delivery by Smartphone

Message Delivery by Smartphone

Intervention Type BEHAVIORAL

Message Delivery by Smartphone

Algorithm Steps Goal and Messages

Step Goal Delivery by Smartphone Message Delivery by Smartphone

Group Type EXPERIMENTAL

Step Goal Delivery by Smartphone

Intervention Type BEHAVIORAL

Step Goal Delivery by Smartphone

Message Delivery by Smartphone

Intervention Type BEHAVIORAL

Message Delivery by Smartphone

Interventions

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Step Goal Delivery by Smartphone

Intervention Type BEHAVIORAL

Message Delivery by Smartphone

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* intent to become physically active
* own an iPhone 5s (or newer model)
* willing to keep the iPhone in pockets during the day
* willing to install and use the intervention app every day for 4 months
* ability to speak and read English.

Exclusion Criteria

* known medical conditions or physical problems that require special attention in an exercise program
* planning an international trip during the next 4 months, which could interfere with daily server uploads of mobile phone data
* pregnant/gave birth during the past 6 months
* severe hearing or speech problem
* history of an eating disorder
* current substance abuse
* current participation in lifestyle modification programs or research studies that may confound study results
* history of bariatric surgery or plans for bariatric surgery in the next 12 months.

Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes