Tailoring Mobile Health Technology to Reduce Obesity and Improve Cardiovascular Health in Resource-Limited Neighborhood Environments
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ClinicalTrials.gov Identifier: NCT03288207 |
Recruitment Status :
Recruiting
First Posted : September 20, 2017
Last Update Posted : March 22, 2023
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Background:
Heart disease is a leading cause of death. People can reduce their heart disease risk by exercising more. Mobile health technology may make people more successful at increasing their exercise. This includes things like physical activity monitors and smartphone apps.
Objective:
To find out if mobile health technology can increase physical activity.
Eligibility:
African American women ages 21-75 who:
- Are overweight or obese
- Live in certain areas near Washington, DC
- Have a smartphone that can use the study app
Design:
At visit 1, participants will
- Answer survey questions. These may be about medical history, physical activity, and weight. They may also cover body image, health perception, and spirituality.
- Have body size measured and get blood tests
- Get a device to wear on the wrist. It will record physical activity and hours of sleep.
- Learn how to download and use the study mobile app
For 2 weeks, researchers will collect data about participants physical activity.
Then participants will have a study visit with additional blood tests.
All participants will get messages from the app that encourage exercise.
Some participants will get data from the app about exercise near their home or work.
Some participants may get face-to-face coaching.
Participants may get wireless devices. These measure body weight, blood pressure, and blood glucose. Participants can measure these at home and upload the data to the app for the study.
Participants will have visits after 3 and 6 months. They will repeat the visit 1 tests.
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Obesity | Device: Bluetooth-enabled glucometer Device: Bluetooth-enabled scale Device: Global Positioning System (GPS) Device Device: Step it Up mobile app | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 265 participants |
Allocation: | Randomized |
Intervention Model: | Sequential Assignment |
Masking: | Single (Participant) |
Primary Purpose: | Basic Science |
Official Title: | Tailoring Mobile Health Technology to Reduce Obesity and Improve Cardiovascular Health in Resource-Limited Neighborhood Environments: A Multi-Level, Community-Based Physical Activity Intervention |
Actual Study Start Date : | June 21, 2018 |
Estimated Primary Completion Date : | October 9, 2023 |
Estimated Study Completion Date : | December 31, 2023 |
Arm | Intervention/treatment |
---|---|
Group 2 Label: PA monitor with standard remote coaching (SRC)
African American women who are at risk for cardiovascular outcomes in resource-limited communities in the Washington D.C. area.
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Device: Bluetooth-enabled glucometer
Bluetooth-enabled glucometer Device: Bluetooth-enabled scale Bluetooth-enabled scale Device: Global Positioning System (GPS) Device Global Positioning System (GPS) Device Device: Step it Up mobile app Step it Up mobile app |
Group 1 Label: PA monitor with remote coaching tailored to place
African American women who are at risk for cardiovascular outcomes in resource-limited communities in the Washington D.C. area.
|
Device: Bluetooth-enabled glucometer
Bluetooth-enabled glucometer Device: Bluetooth-enabled scale Bluetooth-enabled scale Device: Global Positioning System (GPS) Device Global Positioning System (GPS) Device Device: Step it Up mobile app Step it Up mobile app |
- The difference in physical activity (PA) change between an adaptive intervention with remote coaching tailored to neighborhood resources (referred to as tailored-to-place coaching) versus beginning w/ standard remote coaching [ Time Frame: baseline, and up to 6 months ]The difference in physical activity (PA) change (as measured by steps/day) by beginning an adaptive intervention with remote coaching tailored to neighborhood resources (referred to as tailored-to-place coaching) versus beginning with standard remote coaching.
- Determine which embedded adaptive interventions produce the largest PA increase [ Time Frame: Up to 6 months ]Determine which of four embedded adaptive interventions produce the largest PA increase over six months
- Examine the feasibility of incorporating methods for remote capture of CV health measures [ Time Frame: Up to 6 months ]Examine the feasibility of incorporating methods for remote capture of CV health measures (weight, blood pressure, blood glucose) in a target community-based population
- Examine the effect of an adaptive community-based intervention targeting Physical Activity on Cardiovascular health measures [ Time Frame: Up to 6 months ]Examine the effect of an adaptive community-based intervention targeting Physical Activity on Cardiovascular health measures (BMI, blood pressure, fasting lipids, fasting plasma glucose, dietary intake, [self-reported minutes of moderate/vigorous PA, cigarette smoking)
- Identify potential novel inflammatory pathways linked to cardiometabolic risk phenotypes [ Time Frame: Up to 6 months ]Characterize effects of increasing PA on integrated serologic cytokine/chemokine and lipid inflammatory intermediates to identify potential novel inflammatory pathways linked to cardiometabolic risk phenotypes most responsive to the multi-level, community-based PA intervention
- Examine the feasibility of measuring potential psychosocial and behavioral mediators of the relationship between PA change and CV health [ Time Frame: Up to 6 months ]Examine the feasibility of measuring potential psychosocial and behavioral mediators of the relationship between PA change and CV health, such as chronic stress and sedentary behavior/sleep
- Measure exposure to COVID-19 and psychosocial stress caused by the pandemic [ Time Frame: Up to 6 months ]Measure exposure to COVID-19 and psychosocial stress caused by the pandemic as potential confounders of immunologic outcomes and psychosocial stressors

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Ages Eligible for Study: | 21 Years to 75 Years (Adult, Older Adult) |
Sexes Eligible for Study: | Female |
Accepts Healthy Volunteers: | Yes |
- INCLUSION CRITERIA:
Individuals eligible for this protocol are overweight or obese (BMI >= 25 kg/m2) African American women aged 21-75 years who live in Washington, DC Wards 5,7, or 8 and neighboring areas of Prince George s County, MD. Eligible participants should also have access to a smartphone compatible with the mobile app for the protocol that they can use for the study. Eligible participants must be able to provide informed consent independently and also speak and read English at the 8th grade level.
EXCLUSION CRITERIA:
- Medical condition, including recent unintentional weight loss, that might prohibit safe participation in the intervention
- Heart disease as indicated by history of myocardial infarction, documented obstructive coronary artery disease on coronary angiography, coronary artery stent placement, congestive heart failure, significant structural heart disease (e.g. hypertrophic or dilated cardiomyopathy, valvular heart disease)
- Physically unable to perform the physical activity for any reason
- Pregnant women due to large hormonal changes during pregnancy that affect study variables and potential pregnancy-related restrictions on exercise. Self-reported pregnancy status will be accepted.
Pilot Study INCLUSION CRITERIA:
- Must be an African-American female
- Must be within the age of 21-75 years old
- Must be overweight or obese (Body Mass Index (BMI) greater than or equal to 25 kg/m <=)
- Must live in Washington DC Wards (5, 7, or 8) or live in Prince George s County, Maryland.
- Must have a smartphone that is compatible with the study software (mobile app)
- Must be willing to use the software on personal smartphone for the study
- Must be able to provide consent
- Must be willing to wear the wrist-worn physical activity device for the study
- Must not be pregnant

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): NCT03288207
Contact: Valerie Morales-Mitchelll | (301) 827-4981 | valerie.mitchell@nih.gov | |
Contact: Tiffany M Powell-Wiley, M.D. | (301) 594-3735 | powelltm2@mail.nih.gov |
United States, Maryland | |
National Institutes of Health Clinical Center | Recruiting |
Bethesda, Maryland, United States, 20892 | |
Contact: For more information at the NIH Clinical Center contact Office of Patient Recruitment (OPR) 800-411-1222 ext TTY8664111010 prpl@cc.nih.gov |
Principal Investigator: | Tiffany M Powell-Wiley, M.D. | National Heart, Lung, and Blood Institute (NHLBI) |
Publications:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | National Heart, Lung, and Blood Institute (NHLBI) |
ClinicalTrials.gov Identifier: | NCT03288207 |
Other Study ID Numbers: |
170162 17-H-0162 |
First Posted: | September 20, 2017 Key Record Dates |
Last Update Posted: | March 22, 2023 |
Last Verified: | March 17, 2023 |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Community-Based Participatory Research Obesity Cardiovascular Disease Risk Social Determinants of Health |
Obesity Overnutrition Nutrition Disorders Overweight Body Weight |