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Modulating Locomotor-Respiratory Coupling Through Adaptive Exoskeleton Assistance in Patients With COPD

8 juli 2026 bijgewerkt door: Farahnaz Fallahtafti, University of Nebraska
1) Purpose: To improve pulmonary rehabilitation outcomes for individuals with COPD by evaluating the effectiveness of a hip-assisted exoskeleton during a single pulmonary rehabilitation session. 2) Eligibility criteria: Participants must be between 45-75 years old, any gender, but must have a BMI of less than 35 kg/m^2, free from co-morbidities that may affect walking patterns, and must have moderate to severe COPD with no other pulmonary or cardiac issues. (Eligible participants will undergo a screening process which includes 6-minute walking test, medical history exam, and spirometry evaluation.) 3) Intervention and evaluation: The experimental collection will be conducted at the Biomechanics Research Building at the University of Nebraska at Omaha. Participants are required to participate in two sessions on two separate days, both including a 30-minute walking session with one session wearing the hip exoskeleton and the other session without the device.

Studie Overzicht

Toestand

Nog niet aan het werven

Conditie

Interventie / Behandeling

Studietype

Ingrijpend

Inschrijving (Geschat)

10

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Volwassen
  • Oudere volwassene

Accepteert gezonde vrijwilligers

Nee

Beschrijving

Inclusion Criteria:

  • COPD Diagnosis & Severity: Documented FEV1/FVC ratio of < 0.7 and a post-bronchodilator FEV1% predicted between 30% and 80% (classifying as moderate to severe COPD).
  • Age Requirement: Must be between 45 and 75 years old.
  • Body Mass Index (BMI): Must have a BMI of less than 35 kg/m^2.
  • Medical Clearance & Screening: Must undergo post-bronchodilator spirometry, successfully pass the screening protocol, and receive formal clearance for participation from a physician.

Exclusion Criteria:

  • Failing to pass the initial spirometry test.
  • Not being formally cleared for participation by a physician.
  • Having a diagnosed pulmonary or cardiac issue that would pose a safety hazard during the laboratory treadmill exercise trials.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Toestel Haalbaarheid
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Opdracht voor een enkele groep
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Geen tussenkomst: Standard Walking (No Hip Exoskeleton)
Subjects will walk on a treadmill at a preferred speed.
Experimenteel: Hip Exoskeleton-Assisted Walking
Subjects will walk on a treadmill while wearing a hip exoskeleton providing them assistance.
Apparaat: Hip Exoskeleton-Assisted Walking
The intervention is a wearable hip exoskeleton designed to provide assistive torque during treadmill walking. During the assisted walking condition, participants will wear the exoskeleton secured around the waist and thighs. The device will provide powered assistance to the hip joints during walking to reduce the physical demand of locomotion. Participants will complete a 30-minute treadmill walking session at an individualized workload determined during an initial exercise calibration visit. The effects of hip exoskeleton assistance will be evaluated by comparing physiological, respiratory, biomechanical, and exercise tolerance outcomes with a standard walking condition performed without exoskeleton assistance.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Respiratory Rate and Timing
Tijdsspanne: Continuous assessment during the 30-minute treadmill walking bout within each single-day experimental session.
Measured continuously in real-time using Respiratory Inductance Plethysmography bands worn around the chest and abdomen.
Continuous assessment during the 30-minute treadmill walking bout within each single-day experimental session.
Locomotor-Respiratory Coupling (LRC) Ratios
Tijdsspanne: Continuous assessment during the 30-minute treadmill walking bout within each single-day experimental session.
Quantifies the frequency coupling and synchronization between breathing cycles (via RIP bands) and walking cycles (via an SMTEC footswitch system to detect heel strikes).
Continuous assessment during the 30-minute treadmill walking bout within each single-day experimental session.
Dyspnea (Perceived Breathlessness)
Tijdsspanne: Assessed at the end of each treadmill walking bout during the 30-minute exercise session.
Evaluated at the end of each exercise bout using the Modified Borg Scale, ranging from 0 (no breathlessness) to 10 (maximum breathlessness)
Assessed at the end of each treadmill walking bout during the 30-minute exercise session.
Dynamic Hyperinflation
Tijdsspanne: Measured via spirometry at baseline (pre-exercise) and immediately following the treadmill walking session.
Evaluated by monitoring the reduction in Inspiratory Capacity (the maximum volume of air inhaled after a regular, calm exhalation) via baseline and post-exercise spirometry.
Measured via spirometry at baseline (pre-exercise) and immediately following the treadmill walking session.
Walking Kinematics
Tijdsspanne: Continuously recorded during the active 30-minute treadmill walking period in each session.
Captured at 100 Hz using a 17-camera high-speed digital motion capture system with reflective anatomical markers placed on the lower limbs.
Continuously recorded during the active 30-minute treadmill walking period in each session.
Total Walking Time
Tijdsspanne: Recorded as the exact cumulative duration of all active walking bouts during the 30-minute session.
Measured precisely using digital stopwatches to record the exact duration of walking bouts during the 30-minute session.
Recorded as the exact cumulative duration of all active walking bouts during the 30-minute session.
Metabolic Cost / Metabolic Equivalents of Task (METs)
Tijdsspanne: Continuous assessment during the 30-minute treadmill walking bout within each single-day experimental session.
Determined by measuring net O2 consumption and CO2 production using indirect calorimetry.
Continuous assessment during the 30-minute treadmill walking bout within each single-day experimental session.

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

University of Nebraska

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

1 september 2026

Primaire voltooiing (Geschat)

1 september 2027

Studie voltooiing (Geschat)

1 september 2028

Studieregistratiedata

Eerst ingediend

8 juli 2026

Eerst ingediend dat voldeed aan de QC-criteria

8 juli 2026

Eerst geplaatst (Werkelijk)

14 juli 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

14 juli 2026

Laatste update ingediend die voldeed aan QC-criteria

8 juli 2026

Laatst geverifieerd

1 juli 2026

Meer informatie

Termen gerelateerd aan deze studie

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • COPD

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Beschrijving IPD-plan

As this is a pilot study intended to generate preliminary data and establish feasibility, individual participant data (IPD) will not be publicly shared at this stage. Data sharing will be re-evaluated during future, fully powered randomized clinical trials.

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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