MyHeart Counts: Stanford Mobile Cardiovascular Health Study 3.0

Summary

MyHeart Counts is a smartphone-based mobile cardiovascular health research study. It will use the mobile health capabilities of smartphones and wearables to assess daily activity measures of the general public 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 largely go unmeasured. These can now be measured with sensors in phones or wearable devices as we have shown on iOS. With the large number of smartphone users addressable with a HIPAA complaint iOS \& Android platform, the investigators aim to collect activity and cardiovascular health data on many more subjects than in prior studies as well as provide much more quantitative data on type, duration, and intensity of daily activities. It also provides a platform to investigate methods to help participants increase heart-healthy activities. The study also includes a randomized controlled trial on physical activity. The overall goal is to develop an extensive source of data to help inform future cardiovascular health guidelines.

Conditions

• Cardiovascular Health

Interventions

BEHAVIORAL

Physical activity coaching

Interventions will be delivered via smartphone and will consist of physical activity coaching. Once randomized to the Coaching arm, individuals will be presented with seven broad categories of physical activity. They will receive a daily notification on their phone indicating that they have study activities to complete. They will then click on this notification and will be offered five options: 1. A low intensity activity from one of the categories they selected upon start of coaching 2. A moderate-to-vigorous endurance activity 3. The participant will be linked to video content with exercise tutorials/video coaching 4. Option to skip exercise that day 5. Option to fill in a different activity that the participant completed (free text entry) The participant will then select one of these options and complete the chosen activity. They will be presented with the question "Did you completed the exercise" with three options: 1. Yes 2. No 3. "Give me a different exercise"

Sponsors & Collaborators

• Google LLC.

  collaborator INDUSTRY

• Stanford University

  lead OTHER

Principal Investigators

• Euan A Ashley, MRCP, DPhil · Stanford University

• Anders Johnson · Stanford University

• Alex Tolas · Stanford University

Study Design

Allocation

RANDOMIZED

Purpose

BASIC_SCIENCE

Masking

SINGLE

Model

PARALLEL

Eligibility

Min Age

18 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2023-01-01

Primary Completion

2024-01-01

Completion

2026-01-01

Countries

• United States

Study Locations