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Exploring the Feasibility and Effectiveness of a MIED-Based Adolescent Mindfulness Intervention Group for Youth With Emotional Distress

20. juli 2026 opdateret af: Xinghua Liu

Background: Adolescent emotional distress (anxiety and depressive symptoms) is rising globally. The detection rate of depression risk among Chinese middle and high school students reaches 24.6%, with anxiety risk at 18.1%. These conditions show high comorbidity, high recurrence, and high disability rates, seriously affecting adolescents' academic performance, social relationships, and quality of life. Mindfulness-Based Interventions (MBIs) have shown significant effects in children and adolescent populations; meta-analyses indicate a moderate effect size on adolescent internalizing problems (Hedges' g = 0.47). Group-based adolescent mindfulness interventions are feasible, as the group format improves efficiency, reduces costs, and provides social support. However, existing research still has limitations in cultural adaptation and systematic intervention design. The MIED (Mindfulness Intervention for Emotional Distress) systematic theory was developed by researcher Liu Xinghua based on MBSR/UP. Its core theory is the "Diamond Model" of emotional distress, identifying four core maintenance mechanisms: engagement in life, distress tolerance regulation, emotional behavior regulation, and cognitive flexibility enhancement. Adult studies on MIED have shown significant improvements in emotional distress symptoms, but no specialized research has been conducted in adolescent populations.

Methods: This study is a feasibility exploratory study employing a single-group pre-post design, planning to recruit 24-30 adolescents aged 12-18 years with emotional distress, to undergo an 8-week MIED adolescent mindfulness intervention group. Data will be collected at multiple time points: baseline, after session 4, after session 8, and at 1-month follow-up.

Objectives: The primary objective is to evaluate the feasibility of the MIED-based adolescent mindfulness intervention group (recruitment feasibility, retention feasibility, implementation feasibility, acceptability, and safety). The secondary objective is to preliminarily assess the intervention's effectiveness on outcomes such as anxiety, depression, and stress, estimate effect sizes, and provide methodological preparation for subsequent large-scale randomized controlled trials (RCTs).

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

40

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

  • Navn: Mei Yuan, M.S. in Psychology
  • Telefonnummer: +8618513356664
  • E-mail: bettyyuan8@163.com

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Barn
  • Voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

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 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).

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Adolescent Group

Adolescent Group Curriculum： An 8-week adolescent group curriculum adapted from the MIED adult 8-week program, incorporating the cognitive developmental characteristics, social needs, and preferences of adolescents. Curriculum content is based on the MIED Diamond Model modules: awareness and mindfulness, emotion recognition, engagement in life, distress tolerance regulation, emotional behavior regulation, cognitive flexibility enhancement, integration and daily practice, etc.

Parent Group Curriculum： The parent group setup references the approach of Pan et al. (2025) in including a parent group in the Chinese version of UP-A. Core objectives of the parent group include: enhancing parents' understanding of adolescent emotional distress; teaching parents strategies to support adolescent mindfulness practice and emotion regulation; improving parent-child communication; and improving parents' own MIED Diamond Model practice and stress management.
Andet: MIED-based Adolescent Mindfulness Intervention Group

Adolescent Group： Basic curriculum structure: 8 sessions, once per week, 90-120 minutes per session, 12-15 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.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Generalized Anxiety Disorder 7-item scale(GAD-7)
Tidsramme: 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)
Tidsramme: 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)
Tidsramme: 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)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
10-item Connor-Davidson Resilience Scale(CD-RISC-10)
Tidsramme: 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)
Tidsramme: 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)
Tidsramme: 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)
Tidsramme: 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)
Tidsramme: 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)

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Process indicator - attendance rate
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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)

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Xinghua Liu

Efterforskere

  • Ledende efterforsker: Xinghua Liu, PhD, Peking University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

20. juli 2026

Primær færdiggørelse (Anslået)

31. marts 2027

Studieafslutning (Anslået)

31. maj 2027

Datoer for studieregistrering

Først indsendt

1. juli 2026

Først indsendt, der opfyldte QC-kriterier

20. juli 2026

Først opslået (Faktiske)

21. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

21. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

20. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Andre undersøgelses-id-numre

  • E20260701

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

Deidentified individual participant data (IPD) underlying the results reported in the main publication will be available upon reasonable request after publication of the primary trial results. The shared data will include deidentified participant-level data used in the primary and secondary analyses, including baseline characteristics, group allocation, outcome measures, follow-up assessments, adherence indicators, and safety outcomes. Directly or indirectly identifiable information will not be shared. Access will be provided to qualified researchers with a methodologically sound proposal, subject to approval by the principal investigator and relevant ethics requirements, and after completion of a data use agreement.

IPD-deling Understøttende informationstype

  • STUDY_PROTOCOL
  • SAP
  • ICF
  • ANALYTIC_CODE
  • CSR

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