Applying Mobile Persuasive Technologies to Increase Physical Activity in Women
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ClinicalTrials.gov Identifier: NCT01280812 |
Recruitment Status :
Completed
First Posted : January 21, 2011
Results First Posted : September 23, 2020
Last Update Posted : September 23, 2020
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Condition or disease | Intervention/treatment | Phase |
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Sedentary Lifestyle Physical Activity | Behavioral: Mobile phone based physical activity intervention with maintenance plus Behavioral: Mobile phone based physical activity intervention with maintenance regular Behavioral: Control (pedometer only) | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 210 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Single (Outcomes Assessor) |
Primary Purpose: | Prevention |
Official Title: | Applying Mobile Persuasive Technologies to Increase Physical Activity in Women |
Study Start Date : | February 2011 |
Actual Primary Completion Date : | April 2015 |
Actual Study Completion Date : | April 2015 |

Arm | Intervention/treatment |
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Experimental: PA intervention and Maintenance plus
3-month physical activity intervention and 6-month maintenance intervention-Plus program
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Behavioral: 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. |
Experimental: PA intervention and Maintenance regular
3-month physical activity intervention and 6-month maintenance - Regular program
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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. |
Active Comparator: Pedometer
Non-intervention group
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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. |
- Accelerometer (Omron Active Style Pro HJA-350IT) Measured Daily Steps [ Time Frame: Baseline, 3, and 9 months ]This Omron Active Style Pro HJA-350IT comes with a USB Connection and PC Software. The Active Style Pro HJA-350IT can display daily steps. The advantage of using the Omron Active Style Pro HJA-350IT is that the Omron Active Style Pro HJA-350IT will automatically reset the step count every evening at midnight while still allowing participants to view the past 7 days of step counts. Another advantage of using this Omron Active Style Pro HJA-350IT is that a researcher can select 1 of 4 Omron Active Style Pro HJA-350IT screen displays: (1) Steps display only, (2) MET display only, (3) 24-hour clock display (does not show any physical activity information), and (4) Steps, MET, and weekly average activities during the last four weeks. Data from the most recent 150 days performance will also be automatically stored so they can be directly downloaded to a computer.
- Accelerometer (Omron Active Style Pro HJA-350IT) Measured Moderate to Vigorous Physical Activity (Minutes Per Day) [ Time Frame: Baseline, 3 and 9 months ]This Omron Active Style Pro HJA-350IT comes with a USB Connection and PC Software. The Active Style Pro HJA-350IT can display daily steps. The advantage of using the Omron Active Style Pro HJA-350IT is that the Omron Active Style Pro HJA-350IT will automatically reset the step count every evening at midnight while still allowing participants to view the past 7 days of step counts. Another advantage of using this Omron Active Style Pro HJA-350IT is that a researcher can select 1 of 4 Omron Active Style Pro HJA-350IT screen displays: (1) Steps display only, (2) MET display only, (3) 24-hour clock display (does not show any physical activity information), and (4) Steps, MET, and weekly average activities during the last four weeks. Data from the most recent 150 days performance will also be automatically stored so they can be directly downloaded to a computer.
- Self-reported Physical Activity Measured by the 7-day Physical Activity Recall (PAR) [ Time Frame: Baseline, 3 and 9 months ]
An interviewer-administered 7-day physical activity recall (PAR) is used to assess physical activities performed during the week preceding each visit. The PAR is a widely used and well-validated self-report recall instrument that assesses the frequency, duration, and intensity of physical activity. It yields several physical activity indexes (minutes of exercise at each level of exercise intensity, number of days exercised, and a rough estimate of caloric expenditure over the week).
PAR estimates both work-related and non work-related physical activity and higher number indicates greater activity.
- Modified Self-Efficacy for Physical Activity Survey [ Time Frame: Baseline, 3 and 9 months ]The Self-Efficacy for Physical Activity will be used to measure how confident the participant is to engage in physical activity in a specific situation. A sample item is, "I am confident I can participate in regular physical activity when I am tired." The measure consists of five items on a scale of 1 to 5, "1" being "not at all confident" and "5" being "very confident." The possible range of scores is from 5 to 25 points. Higher scores indicate higher self-efficacy for physical activity. Reported internal consistency ranges from 0.78 to 0.82. This measure has been widely used in adult women and men. Based on our pilot study, we added one additional question to this survey.
- Social Support for Physical Activity (Family) [ Time Frame: Baseline, 3 and 9 months ]The Social Support and Exercise Survey will be used to measure both friend and family social support related to physical activity during the past three months. The measure comprises two subscales (friend and family support subscales). Each subscale has 12 items with 5-point Likert scales (ranging from 1, "none" to 5, "very often"). The ratings of all 12 items are summed for a subtotal score. Internal consistency (Cronbach's alpha) of the measure was 0.83 in previous studies. Test-retest reliabilities of the measure have ranged from 0.79 to 0.90 for both scales. Reported internal consistencies ranged between 0.80 to 0.93 for both scales.
- Social Support for Physical Activity (Friends) [ Time Frame: Baseline, 3 and 9 months ]The Social Support and Exercise Survey will be used to measure both friend and family social support related to physical activity during the past three months. The measure comprises two subscales (friend and family support subscales). Each subscale has 12 items with 5-point Likert scales (ranging from 1, "none" to 5, "very often"). The ratings of all 12 items are summed for a subtotal score. Internal consistency (Cronbach's alpha) of the measure was 0.83 in previous studies. Test-retest reliabilities of the measure have ranged from 0.79 to 0.90 for both scales. Reported internal consistencies ranged between 0.80 to 0.93 for both scales.

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Ages Eligible for Study: | 25 Years to 69 Years (Adult, Older Adult) |
Sexes Eligible for Study: | Female |
Accepts Healthy Volunteers: | Yes |
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

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01280812
United States, California | |
University of California San Francisco (Laurel Heights) | |
San Francisco, California, United States, 94118 |
Principal Investigator: | Yoshimi Fukuoka, Ph.D. | University of California, San Francisco |
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | University of California, San Francisco |
ClinicalTrials.gov Identifier: | NCT01280812 |
Other Study ID Numbers: |
P0031274 5R01HL104147-02 ( U.S. NIH Grant/Contract ) |
First Posted: | January 21, 2011 Key Record Dates |
Results First Posted: | September 23, 2020 |
Last Update Posted: | September 23, 2020 |
Last Verified: | September 2020 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
mobile phone physical activity women |
maintenance health promotion prevention |