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Effects of Expectancy and Mindfulness Instructions on Chronic Pain

29 ottobre 2026 aggiornato da: Adam Hanley, Florida State University

Measuring the Frame: Examining the Clinical and Neurophysiological Impact of Verbal Expectations and Practice Instructions in a Mindfulness Exercise for Chronic Pain

This randomized 2×2 factorial study will examine how verbal expectancy framing and mindfulness-specific practice instructions influence acute pain and brain activity in adults with chronic pain. Sixty meditation-naïve adults will be assigned to one of four conditions combining positive or negative expectancy framing with either a guided mindfulness exercise or a sham-meditation comparison exercise. Pain intensity, pain unpleasantness, anxiety, desire for pain medication, and mindfulness-related psychological states will be assessed before and immediately after the intervention, while electroencephalography (EEG) will be used to measure changes in brain activity during the exercise. The study is designed to clarify the independent and combined contributions of expectancy and mindfulness-specific instructions to acute pain relief and neurophysiological responses.

Panoramica dello studio

Stato

Non ancora reclutamento

Condizioni

Intervento / Trattamento

Tipo di studio

Interventistico

Iscrizione (Stimato)

60

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

  • Nome: Carter Minnick
  • Numero di telefono: 850-270-7844
  • Email: cm25bo@fsu.edu

Luoghi di studio

    • Florida
      • Tallahassee, Florida, Stati Uniti, 32303
        • Research Building B
        • Contatto:
          • Carter Minnick
          • Numero di telefono: 850-270-7844
          • Email: cm25bo@fsu.edu

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

18 anni e precedenti (Adulto, Adulto più anziano)

Accetta volontari sani

No

Sessi ammissibili allo studio

Tutto

Descrizione

Inclusion Criteria:

  • Age 18 years or older
  • Chronic pain, defined as pain occurring on more days than not during the past 3 months
  • Average pain intensity ≥3 on a 0-10 scale during the past week
  • Meditation-naïve, defined as no prior formal or informal meditation training, including MBSR/MBCT, books, or online resources

Exclusion Criteria:

  • Inability to provide informed consent
  • Acute cognitive impairment preventing meaningful participation, in the judgment of the study team
  • Unwillingness to refrain from as-needed pain-relief modalities for 3 hours before the laboratory exercise when safe and feasible
  • Unwillingness to complete all study procedures

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: Trattamento
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione fattoriale
  • Mascheramento: Separare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Mindfulness + Positive Expectancy

Standard mindfulness of breath practice to last 15 minutes. Accompanied by either a positive or negative expectancy script directly beforehand.

Sperimentale: Mindfulness + Negative Expectancy

Standard mindfulness of breath practice to last 15 minutes. Accompanied by either a positive or negative expectancy script directly beforehand.

Sperimentale: Sham-Mindfulness + Positive Expectancy

Sham-mindfulness comparator to last 15 min. Participants will be prompted every 3 min to "take a deep breath, as we sit here in mindfulness." Accompanied by either a positive or negative expectancy script directly beforehand.

Sperimentale: Sham-Mindfulness + Negative Expectancy

Sham-mindfulness comparator to last 15 min. Participants will be prompted every 3 min to "take a deep breath, as we sit here in mindfulness." Accompanied by either a positive or negative expectancy script directly beforehand.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Pain Intensity
Lasso di tempo: Immediately before and after the 15-minute intervention

Current pain intensity will be assessed using a 0-10 numeric rating scale, with 0 indicating no pain and 10 indicating the worst pain imaginable. Pain intensity will be assessed immediately before and after the intervention; the primary analysis will compare post-intervention ratings across experimental conditions while adjusting for the corresponding pre-intervention rating.

Immediately before and after the 15-minute intervention
Pain Unpleasantness
Lasso di tempo: Immediately before and after the 15-minute intervention

Current pain unpleasantness will be assessed using a 0-10 numeric rating scale, with 0 indicating not at all unpleasant and 10 indicating extremely unpleasant. Pain unpleasantness will be assessed immediately before and after the intervention; the primary analysis will compare post-intervention ratings across experimental conditions while adjusting for the corresponding pre-intervention rating.

Immediately before and after the 15-minute intervention

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Anxiety
Lasso di tempo: Immediately before and after the 15-minute intervention

Current anxiety will be assessed using a 0-10 numeric rating scale, with 0 indicating not at all anxious and 10 indicating extremely anxious. Anxiety will be assessed immediately before and after the intervention; analyses will compare post-intervention ratings across experimental conditions while adjusting for the corresponding pre-intervention rating.

Immediately before and after the 15-minute intervention
Desire for Pain Medication
Lasso di tempo: Immediately before and after the 15-minute intervention

Current desire for pain medication will be assessed using a 0-10 numeric rating scale, with 0 indicating no desire at all and 10 indicating the strongest possible desire. Desire for pain medication will be assessed immediately before and after the intervention; analyses will compare post-intervention ratings across experimental conditions while adjusting for the corresponding pre-intervention rating.

Immediately before and after the 15-minute intervention
Change in Frontal-Midline Theta Power
Lasso di tempo: During the 15-minute intervention relative to the 5-minute pre-intervention resting baseline

EEG frontal-midline theta power in the 4-8 Hz frequency band will be measured over a prespecified frontal-midline region of interest centered on Fz, FCz, and Cz. Mean theta power during the assigned exercise will be expressed relative to the 5-minute eyes-closed resting baseline.

During the 15-minute intervention relative to the 5-minute pre-intervention resting baseline

Altre misure di risultato

Misura del risultato
Misura Descrizione
Lasso di tempo
Mindfulness
Lasso di tempo: Immediately before and immediately after the 15-minute intervention

State mindfulness will be assessed using the 3-item state version of the Metacognitive Processes of Decentering scale (MPoD-3). Scores will be assessed immediately before and after the intervention to characterize intervention-related changes in state mindfulness.

Immediately before and immediately after the 15-minute intervention
Self-Transcendence
Lasso di tempo: Immediately before and immediately after the 15-minute intervention

State self-transcendence will be assessed using the 3-item state version of the Nondual Awareness Dimensional Assessment (NADA-3). Scores will be assessed immediately before and after the intervention to characterize intervention-related changes in state self-transcendence.

Immediately before and immediately after the 15-minute intervention
Pre-Intervention Treatment Expectancy
Lasso di tempo: Immediately before the expectancy manipulation and 15-minute intervention

Expected effectiveness of the mindfulness exercise for reducing pain will be assessed using a 0-10 numeric rating scale, with 0 indicating not at all effective and 10 indicating extremely effective.

Immediately before the expectancy manipulation and 15-minute intervention
Post-Intervention Treatment Credibility
Lasso di tempo: Immediately after the 15-minute intervention

Perceived credibility or believability of the exercise as a pain-management technique will be assessed using a 0-10 numeric rating scale, with 0 indicating not at all credible and 10 indicating extremely credible.

Immediately after the 15-minute intervention
Number of Participants Reporting an Unpleasant or Adverse Experience
Lasso di tempo: Immediately after the 15-minute intervention

Participants will indicate whether they experienced an unpleasant or adverse experience during the intervention using a Yes/No item. Participants responding Yes will have the opportunity to provide a free-text description of the experience.

Immediately after the 15-minute intervention
Perceived Sociocultural Scaffolding of the Study Encounter
Lasso di tempo: Immediately after the post-exercise processing period, prior to debriefing.

Perceived sociocultural features of the study encounter will be assessed using a 12-item exploratory questionnaire developed for this study. Participants will rate each item on a 1-7 Likert scale ranging from strongly disagree to strongly agree. The questionnaire includes four 3-item subscales assessing: (1) appeal to expert authority, (2) relational alliance-building, (3) ritualization of study procedures, and (4) co-constructed meaning-making. Higher scores on each subscale indicate greater perceived presence of that sociocultural scaffold.

Immediately after the post-exercise processing period, prior to debriefing.

Collaboratori e investigatori

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

Sponsor

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 (Stimato)

15 gennaio 2027

Completamento primario (Stimato)

1 settembre 2027

Completamento dello studio (Stimato)

1 settembre 2027

Date di iscrizione allo studio

Primo inviato

29 ottobre 2026

Primo inviato che soddisfa i criteri di controllo qualità

29 ottobre 2026

Primo Inserito (Effettivo)

4 novembre 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

4 novembre 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

29 ottobre 2026

Ultimo verificato

1 ottobre 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

  • STUDY00008061

Piano per i dati dei singoli partecipanti (IPD)

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SÌ

Descrizione del piano IPD

IPD may be shared with qualified individuals upon request.

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 .