Applying Mobile Persuasive Technologies to Increase Physical Activity in Women

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

210 participants

Study Classification

INTERVENTIONAL

Study Start Date

2011-02-28

Study Completion Date

2015-04-30

Brief Summary

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The primary purpose of this study is to assess the efficacy of the mobile phone-based physical activity intervention on increasing physical activity compared to the control group.

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Detailed Description

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Physical inactivity is associated with increased risk of co-morbidity and premature mortality. Given the rapid growth of mobile phone technology and the increasing number of users, the investigators developed an interactive mobile phone-based physical activity intervention for sedentary women. The investigators propose to conduct a randomized, controlled trial to assess the efficacy of the mobile phone-based physical activity intervention on increasing physical activity over a 3-month period. 192 sedentary women will be randomized in a 2-to-1 ratio to a 3-month mobile phone-based physical activity intervention group or to a control group. To provide insight into how best to maximize the potential for sustained physical activity after completion of the 3-month program, women in the intervention group who complete the physical activity program will be further randomized into a 6-month maintenance intervention-PLUS program (pedometer plus mobile phone diary) or to a 6-month maintenance intervention-REGULAR program (pedometer only). Unlike a conventional maintenance follow-up in which all subjects continue in their respective randomization arms, re-randomizing subjects into either a maintenance intervention-REGULAR group or a maintenance intervention-PLUS group will allow us to examine the "dose-response" of the maintenance methods if the intervention is effective.

Conditions

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Sedentary Lifestyle Physical Activity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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PA intervention and Maintenance plus

3-month physical activity intervention and 6-month maintenance intervention-Plus program

Group Type EXPERIMENTAL

Mobile phone based physical activity intervention with maintenance plus

Intervention Type BEHAVIORAL

This group will receive a mobile phone software program and a pedometer. Over a 3-month period, participants in this group will be asked to wear a pedometer, use a mobile phone physical activity diary, and respond daily physical activity messages or video clips. Over a 6-month maintenance period, participants will be asked to continue using a pedometer and a mobile phone physical activity diary.

PA intervention and Maintenance regular

3-month physical activity intervention and 6-month maintenance - Regular program

Group Type EXPERIMENTAL

Mobile phone based physical activity intervention with maintenance regular

Intervention Type BEHAVIORAL

This group will receive a mobile phone software program and a pedometer. Over a 3-month period, participants in this group will be asked to wear a pedometer, use a mobile phone physical activity diary, and respond daily physical activity messages or video clips. Over a 6-month maintenance period, participants will be asked to continue using a pedometer.

Pedometer

Non-intervention group

Group Type ACTIVE_COMPARATOR

Control (pedometer only)

Intervention Type BEHAVIORAL

This group will receive a pedometer. Over a 9-month period, participants in this group will be asked to wear a pedometer.

Interventions

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Mobile phone based physical activity intervention with maintenance plus

This group will receive a mobile phone software program and a pedometer. Over a 3-month period, participants in this group will be asked to wear a pedometer, use a mobile phone physical activity diary, and respond daily physical activity messages or video clips. Over a 6-month maintenance period, participants will be asked to continue using a pedometer and a mobile phone physical activity diary.

Intervention Type BEHAVIORAL

Mobile phone based physical activity intervention with maintenance regular

This group will receive a mobile phone software program and a pedometer. Over a 3-month period, participants in this group will be asked to wear a pedometer, use a mobile phone physical activity diary, and respond daily physical activity messages or video clips. Over a 6-month maintenance period, participants will be asked to continue using a pedometer.

Intervention Type BEHAVIORAL

Control (pedometer only)

This group will receive a pedometer. Over a 9-month period, participants in this group will be asked to wear a pedometer.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Sedentary lifestyle at work and/or during leisure time
* Intend to be physically active
* Female, age \>25 to 69
* Access to a home telephone or a mobile phone
* Speak and read English

Exclusion Criteria

* Known medical conditions or other physical problems that need special attention in an exercise program
* Plan a trip abroad during the first 4 months of the study period.
* Pregnant/Delivered a baby during the last 6 months
* Known severe hearing or speech problem
* Body Mass Index (BMI) \> 43.0 kg/m2
* Currently participate in lifestyle modification programs or research studies that may potentially confound the results of the study
* History of bariatric surgery or future plans for bariatric surgery in the next 12 months

Minimum Eligible Age

25 Years

Maximum Eligible Age

69 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes