My Heart Counts Cardiovascular Health Study: Next Gen

ConditionsCardiovascular Health Physical Activity

Trial statusNot yet recruiting

Trial phaseNot applicable

Trial typeInterventional

Biological sexAll

Age18+

SponsorStanford University

About this trial

The My Heart Counts Cardiovascular Health Study will utilize mobile health capabilities of smartphones to assess daily activity measures and compare these to measures of cardiovascular health risk factors and fitness. The study aims to collect cardiovascular health data on a diverse population by making the application available on both iOS and Android platforms. Using smartphone sensors and connected devices, the study will collect physical activity metrics, heart rate data, and responses to health questionnaires. The study includes a randomized crossover trial component examining the effectiveness of personalized activity coaching prompts generated by a language model compared to generic prompts.

Eligibility criteria

This trial accepts healthy volunteers

Qualifiers

18 years of age or older

Resident of the United States

Able to read, understand and consent to study

Disqualifiers

None

Trial design

Design model

Crossover

Treatments tested in this trial

Personalized LLM Coaching
Behavioral
Participants receive daily text messages containing exercise coaching prompts generated by a large language model (LLM) that are personalized to the user's demographic information for a period of 7 days.
Generic Activity Prompts
Behavioral
Participants receive generic daily activity prompts for a period of 7 days (e.g., "Push yourself! Reach 10,000 steps today.")

Treatment groups

15,000 Participants

are divided into 2 treatment groups

Group A: Personalized LLM CoachingActive comparator 1 intervention

Group B: Generic Activity PromptsPlacebo comparator 1 intervention

Trial outcomes

Primary outcomes

Change in Physical Activity levels

Change in daily physical activity levels as measured by step count smartphone sensors and connected health devices.

Time frame

Time Frame: 14 days (7 days in each intervention period)

Locations

This trial has no locations.

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

Stanford University

Lead sponsor

Imperial College London

Collaborator

University of Washington