AI coach in your pocket: text prompts aim to boost daily activity
NCT ID NCT06880315
First seen Jun 24, 2026 · Last updated Jul 24, 2026 · Updated 3 times
Summary
This pilot study tests whether personalized text messages created by a large language model (AI) can encourage people to be more physically active. Fifty adults will receive daily prompts on their iPhones and Apple Watches for 14 days, comparing personalized messages to generic ones. The goal is to see if AI-tailored coaching can increase step counts and inform future versions of the My Heart Counts app.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- personalized LLM-generated coaching prompts
- What this could lead to
- If it works, this could point toward a simple, low-cost way to help people become more active using personalized text messages.
- What could go wrong
- This is a very small pilot study with only 50 participants over 14 days. Results may not apply to everyone, and the effect of personalized prompts may be small or short-lived.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for EXERCISE are added.
By submitting, you agree to our Terms of use
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Water workouts could be the key to back pain relief
- Can online workouts bring fitness to adults with cerebral palsy?
- Can a new classification system tailor dementia care to each person?
- Can extreme running stress the heart? a study investigates
- Can a basketball workout reveal the Body's hidden fatigue signals?
- Could simple exercises reshape the curve of your spine?