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Different Pressure Tissue Flossing Combined With Exercise for Chronic Ankle Instability (CAI-FLOSS)

21. Juni 2026 aktualisiert von: Wei-yang Zhang, Chengdu Sport University

Effects of Different Tissue Flossing Pressures Combined With Exercise Training on Ankle Function in Patients With Chronic Ankle Instability: A Three-Arm Randomized Controlled Trial

This study will evaluate whether tissue flossing with different pressure levels, when combined with exercise training, improves ankle function in young adults with chronic ankle instability. Forty-eight participants will be randomly assigned to one of three groups: a control exercise group, a 150 mmHg tissue flossing plus exercise group, or a 200 mmHg tissue flossing plus exercise group. All groups will complete the same 6-week rehabilitation program, three times per week. Outcomes will be assessed at baseline and after the intervention, and long-term follow-up data will also be collected.

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

Chronic ankle instability is characterized by recurrent ankle sprains, a feeling of giving way, pain, swelling, reduced function, and impaired balance control. Exercise-based rehabilitation is a cornerstone of nonoperative management, but adjunctive strategies that may enhance recovery remain of interest.

Tissue flossing is a compression-based intervention in which an elastic band is wrapped around the target joint or limb segment during exercise. It may influence mobility, neuromuscular control, proprioception, and symptom perception. However, the optimal pressure level for long-term rehabilitation in chronic ankle instability remains unclear.

This single-center, assessor-blinded, three-arm parallel randomized controlled trial will be conducted at Chengdu Sport University. A total of 48 young adults with chronic ankle instability will be allocated in a 1:1:1 ratio to a control exercise group, a 150 mmHg tissue flossing plus exercise group, or a 200 mmHg tissue flossing plus exercise group. All participants will complete the same 6-week rehabilitation program, with 3 sessions per week and 18 sessions in total. The two tissue flossing groups will receive pressure-calibrated flossing during the main training phase, while the control group will perform the same exercises without compression.

The primary outcome will be the change in Foot and Ankle Ability Measure Activities of Daily Living score from baseline to 6 weeks. Secondary outcomes will include sport-related foot and ankle function, functional movement screening, ankle range of motion, ankle isometric strength, Biodex balance-related measures, pain, long-term follow-up outcomes, adherence, and adverse events.

Studientyp

Interventionell

Einschreibung (Geschätzt)

48

Phase

  • Unzutreffend

Kontakte und Standorte

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

Studienkontakt

Studienorte

    • Sichuan
      • Chengdu, Sichuan, China
        • Chengdu Sport University
        • Kontakt:

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

  • Erwachsene

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Inclusion Criteria:

  • Young adults aged 18 to 30 years.
  • History of at least one recurrent ankle sprain or repeated episodes of ankle giving way in the affected limb.
  • Subjective ankle instability, with or without pain, swelling, or activity limitation.
  • Reduced balance ability, movement ability, or foot and ankle function on screening assessment.
  • Symptoms lasting at least 6 months.
  • No recent structured ankle rehabilitation before enrollment.
  • No plan for vigorous additional exercise during the intervention period.
  • Willing to participate and able to provide informed consent.

Exclusion Criteria:

  • Latex allergy or intolerance to floss band material.
  • Previous ankle dislocation, fracture, complete ligament rupture, or other severe structural injury.
  • Most recent ankle sprain within 1 month before enrollment.
  • Recent ankle surgery or acute ankle injury.
  • Receipt of other ankle-related treatment, rehabilitation, or additional training during the study period.
  • Diabetes, hyperlipidemia, or other conditions that may affect vascular status.
  • Neurological disease, major musculoskeletal disease, vestibular disorder, visual disorder, or other lower-limb conditions that could affect assessment.
  • Determined by the study physician or investigator to be unsuitable for participation.

Studienplan

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

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Single

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Aktiver Komparator: Control Exercise Training
Participants will complete a 6-week ankle rehabilitation exercise program, 3 sessions per week, without tissue flossing compression.
All groups will perform the same supervised ankle rehabilitation program for 6 weeks, 3 sessions per week, 18 sessions in total, approximately 30 minutes per session. The program will include warm-up, forward lunge ankle mobility training, resistance exercises for dorsiflexion, plantarflexion, inversion, and eversion using an elastic band, double-leg vertical jumping, single-leg balance training, and cool-down. From week 4 onward, the balance task will be progressed to eyes-closed single-leg stance.
Experimental: 150 mmHg Tissue Flossing Plus Exercise Training
Participants will complete the same 6-week ankle rehabilitation exercise program as the control group, with tissue flossing applied to the affected ankle at 150 mmHg during the main training phase.
All groups will perform the same supervised ankle rehabilitation program for 6 weeks, 3 sessions per week, 18 sessions in total, approximately 30 minutes per session. The program will include warm-up, forward lunge ankle mobility training, resistance exercises for dorsiflexion, plantarflexion, inversion, and eversion using an elastic band, double-leg vertical jumping, single-leg balance training, and cool-down. From week 4 onward, the balance task will be progressed to eyes-closed single-leg stance.
During the main exercise phase, tissue flossing will be applied to the affected ankle using an elastic floss band calibrated with a pressure gauge to 150 mmHg. Wrapping will start distally over the dorsum of the foot and follow a figure-of-eight pattern covering the ankle joint region and extending to the distal lower leg. The floss band will be removed immediately after training. If numbness, severe pain, or pallor occur, the compression will be removed immediately.
Experimental: 200 mmHg Tissue Flossing Plus Exercise Training
Participants will complete the same 6-week ankle rehabilitation exercise program as the control group, with tissue flossing applied to the affected ankle at 200 mmHg during the main training phase.
All groups will perform the same supervised ankle rehabilitation program for 6 weeks, 3 sessions per week, 18 sessions in total, approximately 30 minutes per session. The program will include warm-up, forward lunge ankle mobility training, resistance exercises for dorsiflexion, plantarflexion, inversion, and eversion using an elastic band, double-leg vertical jumping, single-leg balance training, and cool-down. From week 4 onward, the balance task will be progressed to eyes-closed single-leg stance.
During the main exercise phase, tissue flossing will be applied to the affected ankle using an elastic floss band calibrated with a pressure gauge to 200 mmHg. Wrapping will start distally over the dorsum of the foot and follow a figure-of-eight pattern covering the ankle joint region and extending to the distal lower leg. The floss band will be removed immediately after training. If numbness, severe pain, or pallor occur, the compression will be removed immediately.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Biodex Limits of Stability Overall Directional Control Score
Zeitfenster: Baseline and 6 weeks
Dynamic postural control will be assessed using the Biodex Balance System SD Limits of Stability Test. Higher overall directional control scores indicate better balance control. Change is calculated as the Week 6 score minus the baseline score.
Baseline and 6 weeks

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Biodex Postural Stability Test Overall Stability Index
Zeitfenster: Baseline and 6 weeks
Static postural stability will be assessed using the Biodex Balance System SD Postural Stability Test under eyes-open and stable-platform conditions. Lower Overall Stability Index scores indicate better postural stability. Change is calculated as the Week 6 score minus the baseline score.
Baseline and 6 weeks
Biodex Fall Risk Test Overall Stability Index
Zeitfenster: Baseline and 6 weeks
Dynamic postural stability will be assessed using the Biodex Balance System SD Fall Risk Test. Lower Overall Stability Index scores indicate better stability and lower fall-related balance risk. Change is calculated as the Week 6 score minus the baseline score.
Baseline and 6 weeks
Biodex Athlete Single-Leg Stability Test Overall Stability Index
Zeitfenster: Baseline and 6 weeks
Dynamic single-leg postural stability will be assessed using the Biodex Balance System SD Athlete Single-Leg Stability Test. Lower Overall Stability Index scores indicate better single-leg stability. Change is calculated as the Week 6 score minus the baseline score.
Baseline and 6 weeks
Active Ankle Dorsiflexion Range of Motion
Zeitfenster: Baseline and 6 weeks
Active dorsiflexion range of motion of the involved ankle will be measured three times using a joint goniometer, and the mean value will be recorded in degrees. Change is calculated as the Week 6 value minus the baseline value.
Baseline and 6 weeks
Maximum Isometric Ankle Eversion Strength
Zeitfenster: Baseline and 6 weeks
Maximum isometric eversion strength of the involved ankle will be measured three times using a microFET3 handheld dynamometer, and the maximum value will be recorded in newtons. Higher values indicate greater muscle strength. Change is calculated as the Week 6 value minus the baseline value.
Baseline and 6 weeks
FAAM Activities of Daily Living Subscale Score
Zeitfenster: Baseline and 6 weeks
Daily foot and ankle function will be assessed using the Foot and Ankle Ability Measure Activities of Daily Living subscale. Scores are converted to a scale from 0 to 100, with higher scores indicating better function. Change is calculated as the Week 6 score minus the baseline score.
Baseline and 6 weeks
FAAM Sports Subscale Score
Zeitfenster: Baseline and 6 weeks
Sports-related foot and ankle function will be assessed using the Foot and Ankle Ability Measure Sports subscale. Scores are converted to a scale from 0 to 100, with higher scores indicating better sports function. Change is calculated as the Week 6 score minus the baseline score.
Baseline and 6 weeks

Andere Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Incidence of Adverse Events During the 6-Week Intervention
Zeitfenster: During the 6-week intervention
Adverse events occurring during the 6-week intervention will be recorded, including numbness, severe pain, pallor, swelling, increased pain, dizziness, shortness of breath, recurrent injury, and other unfavorable events. Results will be reported as the number and percentage of participants experiencing at least one adverse event.
During the 6-week intervention

Mitarbeiter und Ermittler

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

Sponsor

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)

1. Juli 2026

Primärer Abschluss (Geschätzt)

1. Dezember 2026

Studienabschluss (Geschätzt)

1. Mai 2027

Studienanmeldedaten

Zuerst eingereicht

6. Juni 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

21. Juni 2026

Zuerst gepostet (Tatsächlich)

25. Juni 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

25. Juni 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

21. Juni 2026

Zuletzt verifiziert

1. Juni 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • CSU-CAI-FLOSS-2025-01
  • 2025-128 (Andere Kennung: Chengdu Sport University Ethics Committee)

Plan für individuelle Teilnehmerdaten (IPD)

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NEIN

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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