Testing Responses of Young Adults to Intervention Messages for Promoting Physical Activity Trial
NCT ID: NCT05794178
Last Updated: 2025-09-16
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
RECRUITING
NA
360 participants
INTERVENTIONAL
2023-03-31
2026-11-30
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
* Does physical activity increase more when text messages are sent based on a precision rule for selecting and timing messages compared to when the same message content is selected and sent at random or not at all?
* Do biological or social characteristics of young adults make them more likely to respond positively to the precision messaging intervention than either of the other two interventions?
Participants will be provided with education about health-enhancing physical activity and given an activity tracker to wear for 12 months. They will then be randomly assigned to one of three groups. Participants in one group (Precision AIM) will receive up to 4 messages/day selected and timed based on a person-specific algorithm that forecasts possible message effects periodically throughout the day. Messages will be drawn from one of three content libraries: move more, sit less, or inspirational quotes. Participants in a second group (Random AIM) will receive 4 messages/day selected at random from the same three content libraries and delivered at random times within their availability window. Participants in the third group (No AIM) will receive not motivational messages but will randomly assigned to the Random AIM group will receive up to 4 messages/day drawn at random from three content libraries at randomly-selected times. Step counts and weight will be assessed at baseline, and at 3 months, 6 months, 12 months, and 18 months. Researchers will compare Precision AIM, Random AIM and No AIM groups to see if physical activity increased more and weight gain was slower in Precision AIM than Random AIM or No AIM after 3, 6, and 12 months of intervention, and 6 months after the intervention is complete (18 months).
Related Clinical Trials
Explore similar clinical trials based on study characteristics and research focus.
Precision Assignment of Intervention Messages to Promote Physical Activity - Precision AIM
NCT04972279
A Walking Intervention Through Text Messaging
NCT02053259
Random Assignment of Intervention Messages for Developing Personalized Decision Rules to Promote Physical Activity
NCT03907683
Text Messaging to Increase Activity in Midlife
NCT04849052
Guys/Girls Opt for Activities for Life Trial (GOAL) to Increase Young Adolescents' Physical Activity and Healthy Eating
NCT04213014
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
RANDOMIZED
PARALLEL
PREVENTION
TRIPLE
Study Groups
Review each arm or cohort in the study, along with the interventions and objectives associated with them.
Precision AIM
Education + activity monitor + up to 4 text messages/day, each drawn from one of 3 content libraries and timed based on a person- and context-specific algorithm that will be updated monthly based on incoming data (within a participant-defined availability window)
Education
Education about health benefits of physical activity, 2018 US Physical Activity Guidelines, assigned goals tailored to baseline step counts, and worksheet to develop action and coping plans (three of each)
Activity tracker
Fitbit activity tracker and mobile app to provide ad libitum behavioral feedback and self-regulatory support
Text messaging (precision dosing)
Up to four text messages/day within a participant's availability window, timed and selected from one of three content libraries (move more, sit less, inspirational quotes) based on a person-specific dynamic model and contextual data
Random AIM
Education + activity monitor + up to 4 text messages/day, each drawn from one of 3 content libraries and timed at random (within a participant-defined availability window).
Education
Education about health benefits of physical activity, 2018 US Physical Activity Guidelines, assigned goals tailored to baseline step counts, and worksheet to develop action and coping plans (three of each)
Activity tracker
Fitbit activity tracker and mobile app to provide ad libitum behavioral feedback and self-regulatory support
Text messaging (random timing and selection)
Four text messages/day at random times within a participant's availability window and drawn at random from one of three content libraries (move more \[40%\], sit less \[40%\], inspirational quotes \[20%\])
No AIM
Education + activity monitor
Education
Education about health benefits of physical activity, 2018 US Physical Activity Guidelines, assigned goals tailored to baseline step counts, and worksheet to develop action and coping plans (three of each)
Activity tracker
Fitbit activity tracker and mobile app to provide ad libitum behavioral feedback and self-regulatory support
Interventions
Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.
Education
Education about health benefits of physical activity, 2018 US Physical Activity Guidelines, assigned goals tailored to baseline step counts, and worksheet to develop action and coping plans (three of each)
Activity tracker
Fitbit activity tracker and mobile app to provide ad libitum behavioral feedback and self-regulatory support
Text messaging (random timing and selection)
Four text messages/day at random times within a participant's availability window and drawn at random from one of three content libraries (move more \[40%\], sit less \[40%\], inspirational quotes \[20%\])
Text messaging (precision dosing)
Up to four text messages/day within a participant's availability window, timed and selected from one of three content libraries (move more, sit less, inspirational quotes) based on a person-specific dynamic model and contextual data
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
* willing to wear a Fitbit tracker almost continually (23.5 hours/day) for a 12- month period of time
* free of visual impairment that would interfere with the receipt of text messages on their phone
* capable of reading, speaking and understanding English and of giving informed consent
* willing to complete a full 18-month study protocol
Exclusion Criteria
* research-grade accelerometer records sufficient aerobic physical activity to meet 2018 Physical Activity Guidelines for American adults
* living outside the continental US
* one or more contraindications to physical activity
* require an assistive device for mobility or have any other condition that may limit or prevent participation in moderate-intensity physical activity
* pregnant or planning to become pregnant within the next 12 months
* prior diagnosis of cancer, cardiovascular disease, diabetes or metabolic syndrome
* concurrent participation in another research study involving physical activity or weight loss
* planning to have surgery or relocate outside the continental US within the next year.
18 Years
29 Years
ALL
Yes
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
National Heart, Lung, and Blood Institute (NHLBI)
NIH
University of Michigan
OTHER
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
David Conroy
Bickner Chair of Kinesiology and Professor of Kinesiology, School of Kinesiology
Principal Investigators
Learn about the lead researchers overseeing the trial and their institutional affiliations.
David E Conroy, PhD
Role: PRINCIPAL_INVESTIGATOR
University of Michigan
Constantino M Lagoa, PhD
Role: PRINCIPAL_INVESTIGATOR
The Pennsylvania State University
Locations
Explore where the study is taking place and check the recruitment status at each participating site.
University of Michigan
Ann Arbor, Michigan, United States
The Pennsylvania State University
University Park, Pennsylvania, United States
Countries
Review the countries where the study has at least one active or historical site.
Central Contacts
Reach out to these primary contacts for questions about participation or study logistics.
Facility Contacts
Find local site contact details for specific facilities participating in the trial.
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
STUDY00019311
Identifier Type: -
Identifier Source: org_study_id
More Related Trials
Additional clinical trials that may be relevant based on similarity analysis.