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MyHeart Counts Cardiovascular Health Study
NCT03090321 · View on ClinicalTrials.gov ↗
Study Summary
The MyHeart Counts Cardiovascular Health Study will utilize mobile health capabilities of smartphones and wearables to assess daily activity measures of the general population and compare these to measures of cardiovascular health risk factors and fitness. How people divide their time among exercise, sedentary behavior, and sleep all affect cardiovascular health, yet to date these have largely gone unmeasured. With the advancement of phone sensors and wearable fitness tracking devices these factors are now more straightforward to gather and measure. The use of smartphones by a large segment of the population allows for data collection on an unprecedented scale. The investigators aim to amass activity and cardiovascular health data on thousands of participants as well as provide significantly more quantitative data on type,duration, and intensity of daily activities. In the second phase of the MyHeart Counts Cardiovascular Health Study (Randomized Assessment of Physical Activity Prompts In A Large Ambulatory Population) the researchers will conduct a randomized controlled clinical trial of four different physical activity prompts (intervention) and their effect on the level of physical activity in the study population as measured by change in step count.
Conditions Studied
Interventions
- BEHAVIORAL Stand Prompt
- BEHAVIORAL Step Prompt
- BEHAVIORAL Cluster Prompt
- BEHAVIORAL Read AHA website
Study Locations (1)
California
- Stanford University — Stanford
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 2,000,000 participants |
| Start Date | 2015-03 |
| Est. Completion | 2029-12 |
| Phase | NA |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT03090321
The ClinicalTrials.gov registry entry for NCT03090321 describes a study currently listed as active not recruiting. It is categorized as NA, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 2,000,000 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is Stanford University, which has 1,643 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Cardiovascular Health appearing as the primary indexed condition, and to 4 interventions — of which Stand Prompt is the first listed. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT03090321 reports 1 study location spanning 1 distinct geographic area — top geographies include California. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT03090321 about?
NCT03090321 is a clinical study titled "MyHeart Counts Cardiovascular Health Study". The MyHeart Counts Cardiovascular Health Study will utilize mobile health capabilities of smartphones and wearables to assess daily activity measures of the general population and compare these to measures of cardiovascular health risk factors and fitness. How people divide their time among exercise...
What is the current status of trial NCT03090321?
This trial is currently active not recruiting. It is a NA study. The enrollment target is 2,000,000 participants. The study started on 2015-03. Estimated completion is 2029-12.
What conditions does trial NCT03090321 study?
This clinical trial studies the following conditions: Cardiovascular Health. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT03090321?
The interventions under investigation include: Stand Prompt (BEHAVIORAL), Step Prompt (BEHAVIORAL), Cluster Prompt (BEHAVIORAL), Read AHA website (BEHAVIORAL). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT03090321?
This trial is sponsored by Stanford University, which has 1,643 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT03090321 being conducted?
This trial has 1 study location across California. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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