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| ID | Type | Description | Link |
|---|---|---|---|
| 5R01HL104147-02 | U.S. NIH Grant/Contract | View source |
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| Name | Class |
|---|---|
| National Heart, Lung, and Blood Institute (NHLBI) | NIH |
| American Heart Association | OTHER |
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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.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| PA intervention and Maintenance plus | Experimental | 3-month physical activity intervention and 6-month maintenance intervention-Plus program |
|
| PA intervention and Maintenance regular | Experimental | 3-month physical activity intervention and 6-month maintenance - Regular program |
|
| Pedometer | Active Comparator | Non-intervention group |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Mobile phone based physical activity intervention with maintenance plus | 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. |
| Measure | Description | Time Frame |
|---|---|---|
| Accelerometer (Omron Active Style Pro HJA-350IT) Measured Daily Steps | This Omron Active Style Pro HJA-350IT comes with a Universal Serial Bus (USB) Connection and personal computer (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) metabolic equivalents (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. | Baseline, 3, and 9 months |
| Accelerometer (Omron Active Style Pro HJA-350IT) Measured Moderate to Vigorous Physical Activity (Minutes Per Day) | This Omron Active Style Pro HJA-350IT comes with a Universal Serial Bus (USB) Connection and personal computer (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) metabolic equivalents (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. | Baseline, 3 and 9 months |
| Measure | Description | Time Frame |
|---|---|---|
| Self-reported Physical Activity Measured by the 7-day Physical Activity Recall (PAR) | 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 average kcal/kg/day. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Yoshimi Fukuoka, Ph.D. | University of California, San Francisco | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of California San Francisco (Laurel Heights) | San Francisco | California | 94118 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 22168267 | Background | Fukuoka Y, Komatsu J, Suarez L, Vittinghoff E, Haskell W, Noorishad T, Pham K. The mPED randomized controlled clinical trial: applying mobile persuasive technologies to increase physical activity in sedentary women protocol. BMC Public Health. 2011 Dec 14;11:933. doi: 10.1186/1471-2458-11-933. | |
| 25872754 | Background | Fukuoka Y, Gay C, Haskell W, Arai S, Vittinghoff E. Identifying Factors Associated With Dropout During Prerandomization Run-in Period From an mHealth Physical Activity Education Study: The mPED Trial. JMIR Mhealth Uhealth. 2015 Apr 13;3(2):e34. doi: 10.2196/mhealth.3928. |
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| ID | Title | Description |
|---|---|---|
| FG000 | PA Intervention and Maintenance Plus | 3-month physical activity intervention and 6-month maintenance intervention-Plus program 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. |
| Title | Milestones | Reasons Not Completed | |||||
|---|---|---|---|---|---|---|---|
| Overall Study |
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| Mobile phone based physical activity intervention with maintenance regular | 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. |
|
| Control (pedometer only) | Behavioral | This group will receive a pedometer. Over a 9-month period, participants in this group will be asked to wear a pedometer. |
|
| Baseline, 3 and 9 months |
| Modified Self-Efficacy for Physical Activity Survey | 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. | Baseline, 3 and 9 months |
| Social Support for Physical Activity (Family) | 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 (possible ranges from 12 to 60). 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. Higher scores indicate greater support. | Baseline, 3 and 9 months |
| Social Support for Physical Activity (Friends) | 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 (possible ranges from 12 to 60). 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. | Baseline, 3 and 9 months |
| 27514368 | Background | Fukuoka Y, Haskell W, Vittinghoff E. New insights into discrepancies between self-reported and accelerometer-measured moderate to vigorous physical activity among women - the mPED trial. BMC Public Health. 2016 Aug 11;16(1):761. doi: 10.1186/s12889-016-3348-7. |
| 31859677 | Derived | Lindgren T, Hooper J, Fukuoka Y. Perceptions and Experiences of Women Participating in a Digital Technology-Based Physical Activity Intervention (the mPED Trial): Qualitative Study. JMIR Public Health Surveill. 2019 Dec 20;5(4):e13570. doi: 10.2196/13570. |
| 31438926 | Derived | Zhou M, Fukuoka Y, Goldberg K, Vittinghoff E, Aswani A. Applying machine learning to predict future adherence to physical activity programs. BMC Med Inform Decis Mak. 2019 Aug 22;19(1):169. doi: 10.1186/s12911-019-0890-0. |
| 31125101 | Derived | Fukuoka Y, Haskell W, Lin F, Vittinghoff E. Short- and Long-term Effects of a Mobile Phone App in Conjunction With Brief In-Person Counseling on Physical Activity Among Physically Inactive Women: The mPED Randomized Clinical Trial. JAMA Netw Open. 2019 May 3;2(5):e194281. doi: 10.1001/jamanetworkopen.2019.4281. |
| 29925491 | Derived | Fukuoka Y, Lindgren TG, Mintz YD, Hooper J, Aswani A. Applying Natural Language Processing to Understand Motivational Profiles for Maintaining Physical Activity After a Mobile App and Accelerometer-Based Intervention: The mPED Randomized Controlled Trial. JMIR Mhealth Uhealth. 2018 Jun 20;6(6):e10042. doi: 10.2196/10042. |
| 29391341 | Derived | Fukuoka Y, Zhou M, Vittinghoff E, Haskell W, Goldberg K, Aswani A. Objectively Measured Baseline Physical Activity Patterns in Women in the mPED Trial: Cluster Analysis. JMIR Public Health Surveill. 2018 Feb 1;4(1):e10. doi: 10.2196/publichealth.9138. |
| 28418750 | Derived | Fukuoka Y, Lisha NE, Vittinghoff E. Comparing Asian American Women's Knowledge, Self-Efficacy, and Perceived Risk of Heart Attack to Other Racial and Ethnic Groups: The mPED Trial. J Womens Health (Larchmt). 2017 Sep;26(9):1012-1019. doi: 10.1089/jwh.2016.6156. Epub 2017 Apr 18. |
| FG001 | PA Intervention and Maintenance Regular | 3-month physical activity intervention and 6-month maintenance - Regular program 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. |
| FG002 | Pedometer | Non-intervention group Pedometer only: This group will receive a pedometer. Over a 9-month period, participants in this group will be asked to wear a pedometer. |
| COMPLETED |
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| NOT COMPLETED |
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| ID | Title | Description |
|---|---|---|
| BG000 | PA Intervention and Maintenance Plus | 3-month physical activity intervention and 6-month maintenance intervention-Plus program 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. |
| BG001 | PA Intervention and Maintenance Regular | 3-month physical activity intervention and 6-month maintenance - Regular program 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. |
| BG002 | Pedometer | Non-intervention group Pedometer only: This group will receive a pedometer. Over a 9-month period, participants in this group will be asked to wear a pedometer. |
| BG003 | Total | Total of all reporting groups |
| Units | Counts |
|---|---|
| Participants |
|
| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Age, Categorical | Count of Participants | Participants |
| ||||||||||||||||
| Age, Continuous | Mean | Standard Deviation | years |
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| Sex: Female, Male | Count of Participants | Participants |
| ||||||||||||||||
| Ethnicity (NIH/OMB) | Count of Participants | Participants |
| ||||||||||||||||
| Race (NIH/OMB) | Count of Participants | Participants |
| ||||||||||||||||
| Region of Enrollment | Number | participants |
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| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Accelerometer (Omron Active Style Pro HJA-350IT) Measured Daily Steps | This Omron Active Style Pro HJA-350IT comes with a Universal Serial Bus (USB) Connection and personal computer (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) metabolic equivalents (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. | Intention to treat (ITT) analysis | Posted | Mean | Standard Deviation | Steps/Day | Baseline, 3, and 9 months |
|
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| Primary | Accelerometer (Omron Active Style Pro HJA-350IT) Measured Moderate to Vigorous Physical Activity (Minutes Per Day) | This Omron Active Style Pro HJA-350IT comes with a Universal Serial Bus (USB) Connection and personal computer (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) metabolic equivalents (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. | Intention to treat (ITT) analysis | Posted | Mean | Standard Deviation | minutes per day | Baseline, 3 and 9 months |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Secondary | Self-reported Physical Activity Measured by the 7-day Physical Activity Recall (PAR) | 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 average kcal/kg/day. | Intention to treat analysis | Posted | Mean | Standard Deviation | kcal/kg/day | Baseline, 3 and 9 months |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Secondary | Modified Self-Efficacy for Physical Activity Survey | 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. | Intent to treat analysis | Posted | Mean | Standard Deviation | units on a scale | Baseline, 3 and 9 months |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Secondary | Social Support for Physical Activity (Family) | 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 (possible ranges from 12 to 60). 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. Higher scores indicate greater support. | Intention to treat analysis | Posted | Mean | Standard Deviation | units on a scale | Baseline, 3 and 9 months |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Secondary | Social Support for Physical Activity (Friends) | 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 (possible ranges from 12 to 60). 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. | Intention to treat analysis | Posted | Mean | Standard Deviation | units on a scale | Baseline, 3 and 9 months |
|
9 months in total: -Intervention (Plus and Regular Groups) versus Control Group during the 3-month intervention period and the 6-month maintenance period.
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | PA Intervention and Maintenance Plus | 3-month physical activity intervention and 6-month maintenance intervention-Plus program 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. | 0 | 70 | 1 | 70 | 11 | 70 |
| EG001 | PA Intervention and Maintenance Regular | 3-month physical activity intervention and 6-month maintenance intervention regular program 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 stop using the app (activity diary). | 0 | 71 | 1 | 71 | 10 | 71 |
| EG002 | Control | Non-intervention group Pedometer only: This group will receive a pedometer. Over a 9-month period, participants in this group will be asked to wear a pedometer. | 0 | 69 | 3 | 69 | 6 | 69 |
| Term | Organ System | Source Vocabulary | Assessment Type | Notes | Statistical Information |
|---|---|---|---|---|---|
| Hospitalization | Neoplasms benign, malignant and unspecified (incl cysts and polyps) | Systematic Assessment |
| ||
| Hospitalization | Infections and infestations | Systematic Assessment |
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| Hospitalization | Reproductive system and breast disorders | Systematic Assessment |
| ||
| Hospitalization | Gastrointestinal disorders | Systematic Assessment |
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| Hospitalization | Musculoskeletal and connective tissue disorders | Systematic Assessment |
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| Term | Organ System | Source Vocabulary | Assessment Type | Notes | Statistical Information |
|---|---|---|---|---|---|
| Emergency Department or Urgent Care Facility Visit | Ear and labyrinth disorders | Systematic Assessment |
| ||
| Emergency Department or Urgent Care Facility Visit | Infections and infestations | Systematic Assessment |
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| Emergency Department or Urgent Care Facility Visit | Gastrointestinal disorders | Systematic Assessment |
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| Emergency Department or Urgent Care Facility Visit | Injury, poisoning and procedural complications | Systematic Assessment | car accident, assault, head injury at work, burn |
| |
| Emergency Department or Urgent Care Facility Visit | Cardiac disorders | Systematic Assessment |
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| Emergency Department or Urgent Care Facility Visit | Vascular disorders | Systematic Assessment |
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| Emergency Department or Urgent Care Facility Visits | Eye disorders | Systematic Assessment |
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| Emergency Department or Urgent Care Facility Visit | Musculoskeletal and connective tissue disorders | Systematic Assessment |
| ||
| Emergency Department or Urgent Care Facility Visit | Respiratory, thoracic and mediastinal disorders | Systematic Assessment |
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| Emergency Department or Urgent Care Facility Visit | Investigations | Systematic Assessment |
|
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Yoshimi Fukuoka, PhD, RN, FAAN | UC San Francisco | 415-476-8419 | yoshimi.fukuoka@ucsf.edu |
| ID | Term |
|---|---|
| D057185 | Sedentary Behavior |
| D009043 | Motor Activity |
| ID | Term |
|---|---|
| D001519 | Behavior |
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| ID | Term |
|---|---|
| D008283 | Maintenance |
| ID | Term |
|---|---|
| D005159 | Health Care Facilities Workforce and Services |
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| Between 18 and 65 years |
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| >=65 years |
|
| Male |
|
| Not Hispanic or Latino |
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| Unknown or Not Reported |
|
| Asian |
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| Native Hawaiian or Other Pacific Islander |
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| Black or African American |
|
| White |
|
| More than one race |
|
| Unknown or Not Reported |
|
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| Mean total daily steps at 9 months |
|
| OG001 | PA Intervention and Maintenance Regular | 3-month physical activity intervention and 6-month maintenance - Regular program 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. |
| OG002 | Pedometer | Non-intervention group 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. |
|
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| OG002 | Control | Non-intervention group Pedometer only: This group will receive a pedometer. Over a 9-month period, participants in this group will be asked to wear a pedometer. |
|
|
3-month physical activity intervention and 6-month maintenance - Regular program 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. |
| OG002 | Control | Non-intervention group Pedometer only: This group will receive a pedometer. Over a 9-month period, participants in this group will be asked to wear a pedometer. |
|
|
3-month physical activity intervention and 6-month maintenance - Regular program 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. |
| OG002 | Control | Non-intervention group Pedometer only: This group will receive a pedometer. Over a 9-month period, participants in this group will be asked to wear a pedometer. |
|
|
3-month physical activity intervention and 6-month maintenance - Regular program
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.
| OG002 | Control | Non-intervention group Pedometer only: This group will receive a pedometer. Over a 9-month period, participants in this group will be asked to wear a pedometer. |
|
|