MyHeart Counts Cardiovascular Health Study


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Trial ID: NCT03090321


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.

Official Title

MyHeart Counts Cardiovascular Health Study

Stanford Investigator(s)

Euan A. Ashley
Euan A. Ashley

Roger and Joelle Burnell Professor of Genomics and Precision Health, Professor of Medicine (Cardiovascular Medicine), of Genetics, of Biomedical Data Science and, by courtesy, of Pathology


Inclusion Criteria:

   - All adults over the age of 18

Exclusion Criteria:

   - Children under the age of 18


behavioral: Stand Prompt

behavioral: Step Prompt

behavioral: Cluster Prompt

behavioral: Read AHA website


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Contact Information

Stanford University
School of Medicine
300 Pasteur Drive
Stanford, CA 94305
Anna Shcherbina, MEng