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Motivating Activity Through Text Communications - Helping Adults Increase Movement (MATCH AIM)

30 luglio 2026 aggiornato da: David Conroy, University of Michigan

Motivating Activity Through Text - Comparing Human and AI Messages (MATCH AIM) Trial

The goal of this clinical trial is to compare the effect of different types of text messages on physical activity levels of middle-aged and older adults and to determine whether these messages are effective in adults age 40 and older who are engaging in less than 90 minutes per week of moderate or higher intensity physical activity. The main questions it aims to answer are:

  • Which types of motivational messages show the greatest effects on changes in daily step counts in a 3-month precision text messaging intervention?
  • What are the effects of personalized text messages on automatic affective evaluations, habit strength (experienced automaticity), exercise identity, working memory capacity, and processing speed?

Participants will:

  • Wear a Fitbit activity tracker continuously for 3 months and are encouraged to continue wearing it through 6 months.
  • Wear an activPAL activity monitor on their thigh for 7-day assessment periods at the beginning of the study, at 3 months, and at 6 months.
  • Complete 3 cognitive assessments ("brain games") per day on their smartphone during the 7-day assessment periods at baseline, 3 months, and 6 months.
  • Be asked to set goals to increase their daily steps over the first 3 months of the study.
  • Receive up to 4 motivational text messages per day for 3 months to encourage physical activity.
  • Keep study-related apps (Fitbit app, AIM app, MetricWire app) open in the background on their smartphone.
  • Complete questionnaires at the beginning of the study, at 3 months, and at 6 months

Panoramica dello studio

Stato

Reclutamento

Condizioni

Intervento / Trattamento

Tipo di studio

Interventistico

Iscrizione (Stimato)

150

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Luoghi di studio

  • Stati Uniti
    • Michigan
      • Ann Arbor, Michigan, Stati Uniti, 48109
        • Reclutamento
        • University of Michigan
        • Investigatore principale:
          • David E Conroy, PhD
        • Contatto:
        • Contatto:

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto
  • Adulto più anziano

Accetta volontari sani

Sì

Descrizione

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.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Altro
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Quadruplicare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Comparatore attivo: Validated library of text messages
Participants in this arm will receive motivational text messages that have been written and used in previous studies.
Comportamentale: Text Messaging Intervention

Participants will receive up to 4 motivational text messages per day during a self-selected 12-hour window. These messages focus on two content areas: 1) Move more, and 2) sit less. Delivery of these messages occurs in two phases:

  1. Random AIM (month 1): Messages are sent at random times within the participant's window to collect baseline data on their behavioral responses.
  2. Precision AIM (months 2 and 3): Messages are sent at optimized times based on person-specific models that are created from the individual's previous responses to text messages from month 1.
Sperimentale: Newly created text messages
Participants in this arm will receive motivational text messages that have not been used in previous studies.
Comportamentale: Text Messaging Intervention

Participants will receive up to 4 motivational text messages per day during a self-selected 12-hour window. These messages focus on two content areas: 1) Move more, and 2) sit less. Delivery of these messages occurs in two phases:

  1. Random AIM (month 1): Messages are sent at random times within the participant's window to collect baseline data on their behavioral responses.
  2. Precision AIM (months 2 and 3): Messages are sent at optimized times based on person-specific models that are created from the individual's previous responses to text messages from month 1.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Daily Step Count
Lasso di tempo: The activPAL is worn on the thigh for a 7-day assessment period before the intervention begins (baseline), after 3 months of intervention, and then again 3 months after the intervention is complete. The total time frame is 6 months.
The primary outcome measure is the average daily step count, which is assessed using a blinded, research-grade activPAL activity monitor, worn on the thigh for a 7-day assessment period.
The activPAL is worn on the thigh for a 7-day assessment period before the intervention begins (baseline), after 3 months of intervention, and then again 3 months after the intervention is complete. The total time frame is 6 months.

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Mechanisms of Behavior Change for Adherence: Habit Strength
Lasso di tempo: These secondary outcomes are collected at the same major time points as the primary outcome: baseline (month 0), post-intervention (month 3), and follow-up (month 6).
Habit Strength will be assessed using the Behavioral Automaticity Index from the Self-Report Habit Index to measure how automatic the exercise behavior has become. Scores are calculated as the average item responses and range from 1 to 7 with higher scores reflecting greater experienced automaticity (i.e., stronger habits).
These secondary outcomes are collected at the same major time points as the primary outcome: baseline (month 0), post-intervention (month 3), and follow-up (month 6).
Mechanisms of Behavior Change for Adherence: Exercise Identity (Reflective)
Lasso di tempo: These secondary outcomes are collected at the same major time points as the primary outcome: baseline (month 0), post-intervention (month 3), and follow-up (month 6).
Exercise Identity will be assessed using the Exercise Identity Scale to see how much participants view themselves as "exercisers". Scores are based on the average item response and range from 1 to 7 with higher scores representing a stronger exercise identity.
These secondary outcomes are collected at the same major time points as the primary outcome: baseline (month 0), post-intervention (month 3), and follow-up (month 6).
Mechanisms of Behavior Change for Adherence: Automatic Affective Evaluations
Lasso di tempo: These secondary outcomes are collected at the same major time points as the primary outcome: baseline (month 0), post-intervention (month 3), and follow-up (month 6).
Automatic Affective Evaluations will be assessed using a Single-Category Implicit Association Test (SCIAT) to assess non-conscious attitudes toward physical activity. Scores are standardized mean differences of response times between blocks of trials where physical activity is paired with unpleasant attributes and blocks of trials where physical activity is paired with pleasant attributes. Higher scores indicate more favorable automatic affective evaluations of physical activity.
These secondary outcomes are collected at the same major time points as the primary outcome: baseline (month 0), post-intervention (month 3), and follow-up (month 6).
Ambulatory Cognitive Function: Processing Speed
Lasso di tempo: These secondary outcomes are collected at the same major time points as the primary outcome: Baseline (month 0), post-intervention (month 3), and follow-up (6 month).
Processing Speed will be assessed with the Mobile Monitoring of Cognitive Change (M2C2) Symbol Search Task. Scores are based on response times for accurate trials so there is no fixed range for scores. Shorter response times indicate faster (better) processing speed; longer response times indicate slower (worse) processing speed.
These secondary outcomes are collected at the same major time points as the primary outcome: Baseline (month 0), post-intervention (month 3), and follow-up (6 month).
Ambulatory Cognitive Function: Working Memory Capacity
Lasso di tempo: These secondary outcomes are collected at the same major time points as the primary outcome: Baseline (month 0), post-intervention (month 3), and follow-up (6 month).
Working Memory Capacity will be measured using the M2C2 Grid Memory Task. Scores are based on response accuracy measured as a Euclidean distance score. Shorter distance scores indicate more working memory capacity; longer distance scores indicate less working memory capacity.
These secondary outcomes are collected at the same major time points as the primary outcome: Baseline (month 0), post-intervention (month 3), and follow-up (6 month).

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

University of Michigan

Collaboratori

National Institute on Aging (NIA)

Investigatori

  • Investigatore principale: David E Conroy, PhD, University of Michigan

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Effettivo)

11 maggio 2026

Completamento primario (Stimato)

3 maggio 2027

Completamento dello studio (Stimato)

2 agosto 2027

Date di iscrizione allo studio

Primo inviato

4 maggio 2026

Primo inviato che soddisfa i criteri di controllo qualità

11 maggio 2026

Primo Inserito (Effettivo)

18 maggio 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

31 luglio 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

30 luglio 2026

Ultimo verificato

1 luglio 2026

Maggiori informazioni

Termini relativi a questo studio

Parole chiave

Termini MeSH pertinenti aggiuntivi

Altri numeri di identificazione dello studio

  • HUM00262651
  • P30AG086637 (Sovvenzione/contratto NIH degli Stati Uniti)

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

SÌ

Descrizione del piano IPD

De-identified individual participant data (IPD) underlying the results reported in primary and secondary publications will be shared. This includes baseline behavioral metrics, coarsened demographics, post-intervention outcomes, and follow-up data. To protect participant privacy, all data will be stripped of direct identifiers, ages will be binned into 5-to-10-year bands, geographic markers restricted to broad regions, and timeline dates converted to "days since randomization." Raw, free-text qualitative journal entries will be suppressed entirely due to re-identification risks.

Periodo di condivisione IPD

Data and supporting documentation will be made available concurrently with the primary peer-reviewed publication of the trial results and will remain accessible for 5 years post-publication. This immediate availability complies with the NIH Data Management and Sharing Policy.

Criteri di accesso alla condivisione IPD

Access is restricted to qualified external researchers affiliated with an accredited academic or non-profit research institution. Applicants must submit a formal, written research proposal detailing a sound scientific hypothesis and an analytical plan, alongside documentation of local IRB approval/waiver. Approved requestors and their sponsoring institutions must sign a legally binding Data Use Agreement (DUA) that strictly prohibits any re-identification or external data-linking attempts.

Tipo di informazioni di supporto alla condivisione IPD

  • STUDIO_PROTOCOLLO
  • LINFA
  • ICF

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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