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A Preliminary Study on the Feasibility and Effects of a Mindfulness Intervention for Emotional Distress (MIED)-Based Group Intervention for Adolescents (Online Format)

5. November 2026 aktualisiert von: Xinghua Liu

Background: Emotional distress (anxiety and depressive symptoms) among adolescents is rising globally. In China, the detection rate of depression risk among secondary school students is 24.6%, and that of anxiety risk is 18.1%; comorbidity, relapse and disability rates are all high, seriously affecting adolescents' academic performance, social relationships and quality of life. Mindfulness-based interventions (MBIs) have shown substantial effects in children and adolescents, with meta-analyses reporting a moderate effect size for internalizing problems (Hedges' g = 0.47). Group-based mindfulness interventions for adolescents are feasible: the group format improves efficiency, reduces costs and provides social support. However, existing research remains limited in cultural adaptation and in the systematicity of intervention protocols. The MIED (Mindfulness Intervention for Emotional Distress) system, developed by Professor Liu Xinghua on the basis of MBSR and the Unified Protocol (UP), centres on the "diamond model" of emotional distress, which identifies four core maintaining mechanisms: engagement in life, tolerance of distress, emotional behaviours, and cognitive flexibility. Adult studies of MIED show significant improvement in emotional distress, yet no dedicated study has applied it to adolescents.

Methods: This is an exploratory feasibility study using a single-group pre-post design. It plans to recruit 26 adolescents aged 12-18 years with emotional distress for an 8-week online MIED group intervention for adolescents (two online groups, 12-13 participants per group, with an expected effective sample of 20-24). Data will be collected at multiple time points: baseline, after the 4th session, after the 8th session, and at 1-month follow-up.

Objectives: The primary objective is to evaluate the feasibility of the MIED-based adolescent mindfulness group intervention (recruitment feasibility, retention feasibility, implementation feasibility, acceptability, and safety). The secondary objective is to preliminarily evaluate the intervention's effects on anxiety, depression, stress and other outcomes, and to estimate effect sizes, thereby providing methodological preparation for a subsequent large-scale randomized controlled trial (RCT).

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Studientyp

Interventionell

Einschreibung (Geschätzt)

40

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

12 Jahre bis 18 Jahre (Kind, Erwachsene)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Beschreibung

Inclusion Criteria:

  • Age 12-18 years, minors (junior and senior high school level; special note: individuals who exceed the age criterion due to dropout or leave of absence but are still in junior or senior high school may be included if they meet all other inclusion criteria).

PHQ-9 total score 10-19 or GAD-7 total score 10-14 (either criterion is sufficient, indicating mild to moderate depressive or anxiety symptoms).

Informed consent from both the participant and their parent/legal guardian

Exclusion Criteria:

  • PHQ-9 total score ≥20 or GAD-7 total score ≥15, or clinical diagnosis of severe anxiety or depressive disorder (if severe depression or anxiety, referral to individual therapy is recommended).

PHQ-9 item 9 score ≥2 and clinical interview confirming active suicidal ideation or plan.

Presence of psychotic symptoms, bipolar disorder, or severe self-harm behaviors (requiring medical treatment).

Currently receiving other systematic psychotherapy. Severe cognitive or developmental disorders that prevent understanding of group content.

Unable to use a smartphone (affecting use of AI-assisted tools)

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: N / A
  • Interventionsmodell: Einzelgruppenzuweisung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Adolescent Group(online)

Adolescent Group Curriculum:8-week online group curriculum adapted from the adult MIED course for adolescents' cognitive development, social needs and preferences. 8 weekly sessions, 90-120 min each, via video conferencing; 2-3 groups of 9-13 participants (27-30 recruited, expected effective sample 20-24). Based on the MIED diamond model: engagement in life, tolerance of distress, emotional behaviours, cognitive flexibility. Interactive design and AI-assisted tools boost participation and practice adherence; modules refined per prior evidence.

Parent Group Curriculum:Based on the parent group approach in the Chinese UP-A (Pan et al., 2025). Aims: improve parents' understanding of adolescent emotional distress; teach strategies supporting adolescents' mindfulness practice and emotion regulation; improve parent-child communication; support parents' own MIED practice and stress management. 4 sessions, every 2 weeks, 120 min each, online, parallel with the adolescent group.

Adolescent Group: Basic curriculum structure: 8 sessions, once per week, 90-120 minutes per session, 12-20 participants per group. Parent Group Curriculum:Number of sessions: 4 (or 8, synchronized with the adolescent group), once every 2 weeks (or once per week), 120 minutes per session.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Generalized Anxiety Disorder 7-item scale(GAD-7)
Zeitfenster: Screening phase(Pre-enrollment screening,T0), Baseline assessment(1 day before session 1,T1), Week4(After session 4,T2) ,Week8(After session 8,T3), and 1 month(post-intervention follow-up,T4)

Anxiety symptoms: Generalized Anxiety Disorder 7-item scale (GAD-7). Scores range from 0 to 21, with higher scores indicating worse outcome (more severe anxiety symptoms)

Screening phase(Pre-enrollment screening,T0), Baseline assessment(1 day before session 1,T1), Week4(After session 4,T2) ,Week8(After session 8,T3), and 1 month(post-intervention follow-up,T4)
Patient Health Questionnaire-9(PHQ-9)
Zeitfenster: Screening phase(Pre-enrollment screening,T0), Baseline assessment(1 day before session 1,T1), Week4(After session 4,T2) ,Week8(After session 8,T3), and 1 month(post-intervention follow-up,T4)

Depressive symptoms:Patient Health Questionnaire-9, 9 items, self-report;Scores range from 0 to 27, with higher scores indicating worse outcome.

Screening phase(Pre-enrollment screening,T0), Baseline assessment(1 day before session 1,T1), Week4(After session 4,T2) ,Week8(After session 8,T3), and 1 month(post-intervention follow-up,T4)
Perceived Stress Scale(PSS-10)
Zeitfenster: Screening phase(Pre-enrollment screening,T0), Baseline assessment(1 day before session 1,T1), Week4(After session 4,T2) ,Week8(After session 8,T3), and 1 month(post-intervention follow-up,T4)

Perceived stress:Perceived Stress Scale, 10 items, self-report;Scores range from 0 to 40, with higher scores indicating worse outcome.

Screening phase(Pre-enrollment screening,T0), Baseline assessment(1 day before session 1,T1), Week4(After session 4,T2) ,Week8(After session 8,T3), and 1 month(post-intervention follow-up,T4)

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
10-item Connor-Davidson Resilience Scale(CD-RISC-10)
Zeitfenster: Baseline assessment(1 day before session 1,T1), Week4(After session 4,T2) ,Week8(After session 8,T3), and 1 month(post-intervention follow-up,T4)

Resilience :Connor-Davidson Resilience Scale-10, 10 items, self-report;Scores range from 0 to 40, with higher scores indicating better outcome

Baseline assessment(1 day before session 1,T1), Week4(After session 4,T2) ,Week8(After session 8,T3), and 1 month(post-intervention follow-up,T4)
Difficulties in Emotion Regulation Scale-Short Form(DERS-16)
Zeitfenster: Baseline assessment(1 day before session 1,T1), Week4(After session 4,T2) ,Week8(After session 8,T3), and 1 month(post-intervention follow-up,T4)

Difficulties in emotion regulation:Difficulties in Emotion Regulation Scale-Brief, 16 items, self-report;Scores range from 16 to 80, with higher scores indicating worse outcome

Baseline assessment(1 day before session 1,T1), Week4(After session 4,T2) ,Week8(After session 8,T3), and 1 month(post-intervention follow-up,T4)
Overall Anxiety Severity and Impairment Scale (OASIS)
Zeitfenster: Baseline (T1), Weeks 1, 2, 3, 4 (T2), 5, 6, 7 (during intervention), Week 8 immediately post-intervention (T3), and 1 month(post-intervention follow-up,T4)

The OASIS is a 5-item self-report measure designed to assess the frequency and severity of anxiety symptoms, as well as the extent of anxiety-related functional impairment and avoidance, over the past week. Each item is rated on a 5-point scale from 0 to 4, with total scores ranging from 0 to 20. Higher scores indicate greater overall anxiety severity and impairment. The OASIS has demonstrated good reliability and validity in both clinical and nonclinical samples (Norman et al., 2006).

Baseline (T1), Weeks 1, 2, 3, 4 (T2), 5, 6, 7 (during intervention), Week 8 immediately post-intervention (T3), and 1 month(post-intervention follow-up,T4)
Overall Depression Severity and Impairment Scale (ODSIS)
Zeitfenster: Baseline (T1), Weeks 1, 2, 3, 4 (T2), 5, 6, 7 (during intervention), Week 8 immediately post-intervention (T3), and 1 month(post-intervention follow-up,T4)

The ODSIS is a 5-item self-report measure designed to assess the frequency and severity of depressive symptoms, as well as depression-related functional impairment and avoidance, over the past week. Each item is rated on a 5-point scale from 0 to 4, with total scores ranging from 0 to 20. Higher scores indicate greater overall depression severity and impairment. The ODSIS has demonstrated good reliability and validity in both clinical and nonclinical samples (Bentley et al., 2014).

Baseline (T1), Weeks 1, 2, 3, 4 (T2), 5, 6, 7 (during intervention), Week 8 immediately post-intervention (T3), and 1 month(post-intervention follow-up,T4)
Five Facet Mindfulness Questionnaire-Short Form(FFMQ-SF)
Zeitfenster: Baseline assessment(1 day before session 1,T1), Week4(After session 4,T2) ,Week8(After session 8,T3), and 1 month(post-intervention follow-up,T4)

Mindfulness level:Five Facet Mindfulness Questionnaire-Short Form, 20 items, self-report; Scores range from 0 to 5 for average item scores and 24-120 for total scores, with higher scores indicating better outcome

Baseline assessment(1 day before session 1,T1), Week4(After session 4,T2) ,Week8(After session 8,T3), and 1 month(post-intervention follow-up,T4)

Andere Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Process indicator - attendance rate
Zeitfenster: Week 8 (immediately after session 8,T3)

attendance rate. Scores range from 0% to 100%, with higher scores indicating better outcome.

Week 8 (immediately after session 8,T3)
Process indicator -homework completion rate
Zeitfenster: Week 8 (immediately after session 8,T3)

Scores range from 0% to 100%, with higher scores indicating better outcome

Week 8 (immediately after session 8,T3)
Process indicator - dropout rate and reasons
Zeitfenster: Week 8 (immediately after session 8,T3)

dropout rate and reasons: Scores range from 0% to 100%, with higher scores indicating worse outcome

Week 8 (immediately after session 8,T3)
Acceptability
Zeitfenster: Week 8 (immediately after session 8,T3)

self-developed acceptability and satisfaction scale (adolescent/parent version, 1-5 Likert scale).with higher scores indicating better outcome

Week 8 (immediately after session 8,T3)
Adverse Event Records
Zeitfenster: Baseline (T1); Week4 (T2) during the intervention; immediately post-intervention at Week 8(T3); and1 month(post-intervention follow-up,T4)

adverse event records (emotional deterioration, self-harm reports, number of crisis triggers);with more records indicating worse outcome

Baseline (T1); Week4 (T2) during the intervention; immediately post-intervention at Week 8(T3); and1 month(post-intervention follow-up,T4)

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Ermittler

  • Hauptermittler: Xinghua Liu, Peking University

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

6. November 2026

Primärer Abschluss (Geschätzt)

31. März 2027

Studienabschluss (Geschätzt)

31. März 2027

Studienanmeldedaten

Zuerst eingereicht

4. November 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

5. November 2026

Zuerst gepostet (Tatsächlich)

12. November 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

12. November 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

5. November 2026

Zuletzt verifiziert

1. November 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • E20261018

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  • SAFT
  • ICF
  • ANALYTIC_CODE
  • CSR

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Nein

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