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AI vs. human texts: which gets seniors off the couch?

NCT ID NCT07593677

Symptom relief Sponsor: University of Michigan Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jul 31, 2026 · Updated 2 times

Summary

This study tests whether motivational text messages can increase physical activity in adults aged 40 and older who are not very active. Participants will wear activity trackers and receive up to 4 texts per day for 3 months, some timed based on their personal habits. The goal is to see which messages work best and whether they also improve thinking skills.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
motivational text messages
What this could lead to
If successful, this could show that personalized text messages are a simple, low-cost way to help older adults become more active and improve thinking skills.
What could go wrong
This is a small, early-stage study (150 people) testing behavior change, not a drug. Results may not apply to everyone, and the effect on activity levels may be modest or short-lived.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 150 people

The number the study aims to enrol. It can still change while the study runs.

Started

May 2026

Expected to finish

Aug 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

40 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Be 40 years of age or older * Own a smartphone running an Android or iOS operating system * Have proficiency with the English language * Be capable of providing informed consent * Be able to perform moderate physical activity without restrictions * Be willing to complete the entire 6-month protocol * Be willing to establish a 12-hour window - beginning no later than 9:45 am and ending no later than 9:45 pm - for receiving text messages. Exclusion Criteria: * Residing outside of the continental United States * Self-reporting 90 minutes or more of moderate-to-vigorous intensity physical activity per week * contraindications to normal physical activity as identified on the Physical Activity Readiness Questionnaire (PAR-Q) * Mobility restrictions that interfere with unassisted physical activity * Being pregnant or planning to become pregnant during the study * Planning to undergo surgery during the course of the study protocol * Having a prior diagnosis of Alzheimer's disease or a related dementia * Evidence of mild cognitive impairment as indicated by a mini-Montreal Cognitive Assessment (MoCA) test score of 12 or higher * Concurrent participation in another study involving weight loss or physical activity * Failure to respond to at least 85% of Ecological Momentary Assessment (EMA) prompts during the 7-day qualification phase.

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Conditions

The condition(s) this trial relates to.

Motor Activity Sedentary Behavior

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Aging Behavior change Cognitive ability Physical inactivity

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • University of Michigan

    RECRUITING

    Ann Arbor, Michigan, 48109, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.