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Cross-System Effects of Acute Intermittent Hypercapnia-Based Interventions in PD

23. Juni 2026 aktualisiert von: University of Florida

A Pilot Study of Acute Intermittent Hypercapnia-Based Interventions on Upper Airway and Axial Motor Function in Parkinson's Disease

Parkinsonism impairs upper airway and axial motor control, leading to disordered breathing, reduced speech volume, and ineffective cough. Symptoms are poorly addressed by current therapies. This randomized pilot trial tests whether a single session of acute intermittent hypercapnic hypoxia (AIHH) or hypercapnic normoxia (AIHN) improves upper airway and axial motor function in Parkinsonism, and explores biomarker correlates of intervention responsiveness.

Studienübersicht

Status

Rekrutierung

Bedingungen

Intervention / Behandlung

Studientyp

Interventionell

Einschreibung (Geschätzt)

32

Phase

  • Unzutreffend

Kontakte und Standorte

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

Studienkontakt

Studieren Sie die Kontaktsicherung

  • Name: Alysha Bogard, PhD
  • Telefonnummer: 3038279875
  • E-Mail: abogard@ufl.edu

Studienorte

  • Vereinigte Staaten
    • Florida
      • Gainesville, Florida, Vereinigte Staaten, 32610
        • Rekrutierung
        • University of Florida
        • Kontakt:
        • Kontakt:
        • Hauptermittler:
          • Michela Mir, CCC-SLP
        • Hauptermittler:
          • Alysha Bogard, PhD
      • Gainesville, Florida, Vereinigte Staaten, 80303-2181
        • Rekrutierung
        • Norman Fixel Institute for Neurological Diseases
        • Kontakt:
        • Hauptermittler:
          • Michela Mir, CCC-SLP
        • Hauptermittler:
          • Alysha Bogard, PhD
        • 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
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Inclusion Criteria:

  1. adults 40 to 75 years of age (the latter to reduce the likelihood of cardiovascular disease)
  2. diagnosis of idiopathic Parkinsonism with Hoehn and Yahr stages 2-4
  3. medically stable with physician clearance
  4. ability to ambulate at least 10 feet with/without assistance
  5. ability to follow directions
  6. willing to abstain from blood donation for the duration of the study

Exclusion Criteria:

  1. additional neurologic conditions
  2. severe illness or infection, including respiratory/cardiovascular/lung disease, or uncontrolled hypertension
  3. inspiratory stridor
  4. pregnancy due to unknown tAIH effects on a fetus, although females of childbearing age will not be excluded*
  5. cigarette smoking or vaping within 5 years
  6. history of head/neck/lung cancer with the exception of basal cell carcinoma
  7. is currently participating in another research study that could influence the results from this study
  8. has deep brain stimulation electrodes implanted or has a history of deep brain stimulation

  9. faints or becomes lightheaded at the sight of blood

    • If a female of childbearing potential indicates there is a chance she could be pregnant, she will be provided a pregnancy test and allowed to continue in the study if negative. This is because the fetal risks associated with intermittent hypoxia are unknown.

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
Experimental: Group 1: Acute Intermittent Hypercapnic Hypoxia
Each participant randomly allocated to this arm will breathe brief bouts of mild acute intermittent hypercapnic hypoxia as the intervention, with PRE and POST testing of upper airway, axial function, and blood-based biomarkers.
Sonstiges: Acute intermittent hypercapnic hypoxia (AIHH)
Participants randomized to Group 1 will breathe brief bouts of AIHH, involving 15, 1.5-min exposures to 9-10% O2 and 4-5% CO2, alternated with 1 minute of 21% O2 (room air).
Aktiver Komparator: Group 2: Acute Intermittent Hypercapnic Normoxia
Each participant randomly allocated to this arm will breathe brief bouts of mild acute intermittent hypercapnic normoxia as the intervention, with PRE and POST testing of upper airway, axial function, and blood-based biomarkers.
Sonstiges: Acute intermittent hypercapnic normoxia (AIHN)
Participants randomized to Group 2 will breathe brief bouts of AIHN, involving 15, 1.5-min exposures to 21% O2 and 4-5% CO2, alternated with 1 minute of 21% O2 (room air).

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Change in speech loudness
Zeitfenster: baseline and 60 minutes post-intervention
Within-subject differences in sound pressure level (decibels) pre/post intervention and differences between intervention groups (AIHH vs. AIHN) during sustained phonation and connected speech.
baseline and 60 minutes post-intervention
Change in maximum phonation duration
Zeitfenster: baseline and 60-minutes post-intervention
Within-subject differences in duration (s) of sustained "ah" pre/post intervention and differences in duration between intervention groups (AIHH vs. AIHN).
baseline and 60-minutes post-intervention
Change in peak expiratory flow rate during voluntary cough
Zeitfenster: baseline and 60 minutes post-intervention
Within-subject differences in peak expiratory flow rate (L/s) produced during maximal volitional cough production, pre/post intervention, and between group (AIHH vs. AIHN) differences in peak expiratory flow rate.
baseline and 60 minutes post-intervention
Change in Five-Times Sit-to-Stand performance
Zeitfenster: baseline and 60 minutes post-intervention
Within-subject differences in average time (s) to complete 5 times sit-to-stand task, pre/post intervention, and differences between intervention groups (AIHH vs. AIHN).
baseline and 60 minutes post-intervention
Change in Timed Up and Go performance
Zeitfenster: baseline and 60 minutes post-intervention
Within-subject differences in duration (s) of Timed Up and Go performance, pre/post intervention. This includes duration of time participants take to stand, walk 3m, turn, walk back 3m, and sit. Differences in duration will also be compared between intervention groups (AIHH vs. AIHN).
baseline and 60 minutes post-intervention
Change in fast walking speed
Zeitfenster: baseline and 60 minutes post-intervention
Within-subject differences in duration (s) of 10M walk test, pre/post intervention. Differences in duration will also be compared between intervention groups (AIHH vs. AIHN)
baseline and 60 minutes post-intervention
Correlation between blood-based biomarkers and functional outcomes
Zeitfenster: Baseline and 60 minutes post-intervention; genotype assessed at baseline only
Relationship between baseline biomarkers (APOE and BDNF genotype, inflammatory cytokines, serum urate, and circulating α-synuclein) and differences in speech loudness (dB), phonation duration (s), TUG (s), 5x sit-to-stand, and 10M walk test, pre/post intervention in both AIHH and AIHN intervention groups.
Baseline and 60 minutes post-intervention; genotype assessed at baseline only

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Change in words per breath during connected speech
Zeitfenster: baseline and 60 minutes post-intervention
Within-subject differences in the total number of words produced per breath while reading aloud Grandfather Passage, pre/post intervention. Words per breath will also be measured and compared between intervention groups (AIHH vs. AIHN).
baseline and 60 minutes post-intervention
Change in cough volume acceleration during voluntary cough
Zeitfenster: Baseline and 60 minutes post-intervention
Within-subject differences in cough volume acceleration (L/s²) during maximal volitional cough production, pre/post intervention, and between groups (AIHH vs. AIHN). Cough volume acceleration is calculated as peak expiratory flow divided by peak expiratory flow rise time.
Baseline and 60 minutes post-intervention
Change in airway occlusion pressure
Zeitfenster: Baseline and 60 minutes post-intervention
Within-subject differences in mouth occlusion pressure (P0.1) measured in cmH2O, pre/post intervention, and between group differences (AIHH vs. AIHN). P0.1 is the pressure generated at the mouth during the first 0.1 seconds of inspiration against an occluded airway.
Baseline and 60 minutes post-intervention
Change in quiet breathing minute ventilation
Zeitfenster: Baseline and 60 minutes post-intervention
Within-subject differences in minute-ventilation (L/min ), pre/post intervention, and between group differences (AIHH vs. AIHN) measured during 20 minutes of quiet breathing. Minute ventilation is the calculated using breathing frequency (breaths per minute) x tidal volume (L).
Baseline and 60 minutes post-intervention
Association between sleep characteristics and functional outcomes
Zeitfenster: Overnight sleep assessment between acclimation and testing visit; functional outcomes measured at baseline and 60 minutes post-intervention
Relationship between sleep-related metrics (apnea-hypopnea index, oxygen saturation index, and sleep fragmentation) and differences in speech loudness (dB), phonation duration (s), TUG (s), 5x sit-to-stand, and 10M walk test, pre/post intervention in both AIHH and AIHN intervention groups. AHI is calculated by dividing total number of apneas/hypopneas by total hours of sleep. ODI is calculated by dividing the number of times %oxygen drops below baseline by total hours of sleep.
Overnight sleep assessment between acclimation and testing visit; functional outcomes measured at baseline and 60 minutes post-intervention

Mitarbeiter und Ermittler

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

Sponsor

University of Florida

Ermittler

  • Hauptermittler: Michela Mir, CCC-SLP, University of Florida
  • Hauptermittler: Alysha Bogard, PhD, University of Florida

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)

20. Juni 2026

Primärer Abschluss (Geschätzt)

31. Dezember 2028

Studienabschluss (Geschätzt)

31. Dezember 2028

Studienanmeldedaten

Zuerst eingereicht

16. Juni 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

23. Juni 2026

Zuerst gepostet (Tatsächlich)

29. Juni 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

29. Juni 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

23. Juni 2026

Zuletzt verifiziert

1. Juni 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Schlüsselwörter

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • IRB202600117

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

JA

Beschreibung des IPD-Plans

De-identified individual participant data may be made available upon reasonable request following publication of the primary study results and with approval of the study investigators and University of Florida.

IPD-Sharing-Zeitrahmen

Available Starting:

12 months after publication of the primary study results.

Available Ending:

5 years after publication of the primary study results.

IPD-Sharing-Zugriffskriterien

De-identified individual participant data (IPD) that underlie the results reported in published manuscripts will be available beginning 12 months following publication of the primary study results and ending 5 years thereafter. Shared data may include demographic characteristics, intervention assignment, speech outcomes, cough outcomes, respiratory outcomes, mobility outcomes, sleep metrics, blood-based biomarker measures, and associated data dictionaries. Investigators who provide a methodologically sound proposal for secondary analyses may request access. Requests will be reviewed by the study investigators and the University of Florida as applicable. Approved investigators will receive access to de-identified datasets and supporting documentation through a secure data-sharing mechanism following execution of any required data use agreements and institutional approvals.

Art der unterstützenden IPD-Freigabeinformationen

  • STUDIENPROTOKOLL
  • SAFT
  • ANALYTIC_CODE

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .

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