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Showing 1–24 of 40 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Change in inspiratory flow Clear all
Completed Phase 1Phase 2 Interventional Results available

Cough and Swallow Rehab Following Stroke

NCT01907321
View directory record Official record
Conditions
Ischemic Stroke
Interventions
Expiratory muscle strength training, Placebo expiratory training, Measures performed on all subjects, Pulmonary function test, Fluoroscopic swallow study
Behavioral · Drug · Radiation
Lead sponsor
University of Florida
Other
Eligibility
50 Years to 85 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
2
States / cities
Gainesville, Florida • Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 26, 2017 · Synced Sep 24, 2026, 2:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

MusculRA: The Effects of Rheumatoid Arthritis on Skeletal Muscle Biomechanics

NCT04226131
View directory record Official record
Conditions
Rheumatoid Arthritis, Healthy Controls
Interventions
Blood Draw, Disease Activity (DAS-28) Assessment, Skeletal Muscle Mitochondrial Respiratory Capacity, Muscle Biopsy, Body Composition, Cardiopulmonary Exercise Test (CPET), Strength Testing, Questionnaires, Skeletal Muscle Biomechanical Property Assessment
Other
Lead sponsor
Duke University
Other
Eligibility
25 Years to 75 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 12, 2023 · Synced Sep 24, 2026, 2:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Mechanisms of Altered Ventilatory Control in Heart Failure

NCT02421341
View directory record Official record
Conditions
Heart Failure
Interventions
Fentanyl, Catheters, Exercise, DEXA, Pulmonary Function Tests, Blood Draw, Chemosensitivity Test, Placebo
Drug · Procedure · Other + 1 more
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 90 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2019
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 15, 2021 · Synced Sep 24, 2026, 2:36 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Brain Blood Vessel Responses to Changes in Blood Flow: Younger Cohort

NCT06629090
View directory record Official record
Conditions
Magnetic Resonance Imaging, Cerebrovascular Circulation
Interventions
MRI, Prazosin, Placebo
Device · Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
20 Years to 40 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 24, 2026, 2:36 AM EDT
Completed Not applicable Interventional

Pilot Study of Physiological Effect of High-Flow Nasal Cannula on Respiratory Pattern and Work of Breathing

NCT02514798
View directory record Official record
Conditions
COPD
Interventions
Esophageal and gastric balloons, Respiratory Inductance Plethysmography (RIP) system, Sentec transcutaneous monitoring system, High-flow humidified nasal oxygen delivery system, CPAP (Positive Control)
Other · Device
Lead sponsor
Tufts Medical Center
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 9, 2022 · Synced Sep 24, 2026, 2:36 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Brain Blood Vessel Responses to Changes in Blood Flow

NCT06629077
View directory record Official record
Conditions
Magnetic Resonance Imaging, Cerebrovascular Circulation
Interventions
MRI, Prazosin, Placebo
Device · Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
55 Years to 69 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Sep 24, 2026, 2:36 AM EDT
Withdrawn Not applicable Interventional

Effectiveness of Jamboxx Respiratory Therapy Device: Study 1

NCT03533400
View directory record Official record
Conditions
Spinal Cord Injuries, Respiratory Complication
Interventions
Jamboxx Respiratory Therapy Device, Jamboxx Musical Device
Device
Lead sponsor
My Music Machines Inc.
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Albany, New York
Source: ClinicalTrials.gov public record
Updated May 12, 2020 · Synced Sep 24, 2026, 2:36 AM EDT
Active, not recruiting Not applicable Interventional

Brain, Emotions, and Mind-Wandering

NCT05345392
View directory record Official record
Conditions
Mood Disorders
Interventions
Mindfulness-Based Intervention (MBI), Health and Wellness Intervention (HWI)
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
11 Years to 14 Years
Enrollment
224 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 7, 2026 · Synced Sep 24, 2026, 2:36 AM EDT
Withdrawn Not applicable Interventional

Assessment of Occult Lung Stress During Lung Protective Mechanical Ventilation

NCT05675696
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome
Interventions
Esophageal Catheter
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 8, 2025 · Synced Sep 24, 2026, 2:36 AM EDT
Completed No phase listed Observational

Delineating Swallowing Impairment and Decline in ALS

NCT02962050
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis
Interventions
Videofluoroscopic Swallowing Study (VFSS), Voluntary Peak Cough Flow Testing, Iowa Oral Performance Instrument, Capsaicin Challenge, Pulmonary Function Testing, Eating Assessment Tool 10, The Center for Neurologic Study Bulbar Function Scale
Procedure · Device · Drug + 1 more
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 90 Years
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
2
States / cities
Gainesville, Florida • Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Sep 24, 2026, 2:36 AM EDT
Completed Early Phase 1 Interventional

Respiratory Strength Training in Persons With Amyotrophic Lateral Sclerosis (ALS)

NCT02710110
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis
Interventions
PowerLung trainer, Micro Mouth Pressure Meter, Pulmonary Function Testing, Videofluoroscopic swallowing study, Swallowing Quality of Life Questionnaire, Iowa Oral Pressure Instrument, Capsaicin
Device · Procedure · Other + 1 more
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 85 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 26, 2020 · Synced Sep 24, 2026, 2:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Yogic Breathing Changes Salivary Components

NCT02108769
View directory record Official record
Conditions
Alzheimer Disease, Neurodegenerative Diseases, Cancer
Interventions
Yogic Breathing, Attention Control
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 8, 2014 · Synced Sep 24, 2026, 2:36 AM EDT
Completed Not applicable Interventional Results available

Improved Patient Recovery After Anesthesia With Hypercapnia Hyperpnoea

NCT00708526
View directory record Official record
Conditions
Hypercapnia
Interventions
standard of care for phase one anesthesia care, Quick Emergence Device
Other · Device
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Nov 28, 2022 · Synced Sep 24, 2026, 2:36 AM EDT
Completed Not applicable Interventional

Mental Stress Ischemia: Biofeedback Study

NCT02657382
View directory record Official record
Conditions
Cardiovascular Disease, Coronary Artery Disease
Interventions
Heart Rate Variability (HRV) Biofeedback (BF), Mental Stress Protocol
Behavioral · Other
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
4
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 13, 2020 · Synced Sep 24, 2026, 2:36 AM EDT
Completed Not applicable Interventional Results available

HFNC Flow Titration and Effort of Breathing in the PICU

NCT02793674
View directory record Official record
Conditions
High Flow Nasal Cannula
Interventions
Fisher & Paykel high flow nasal cannula, Vapotherm high flow nasal cannula
Device
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
Up to 3 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 29, 2024 · Synced Sep 24, 2026, 2:36 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Hookah Smoking, Carbon Monoxide, and Coronary Endothelial Function

NCT03166787
View directory record Official record
Conditions
Smoking, Endothelial Dysfunction
Interventions
Charcoal hookah, E-coal hookah, Cigarette, Carbon Monoxide inhalation, Room Air inhalation, vitamin C, tadalafil
Other · Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
21 Years to 49 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 8, 2021 · Synced Sep 24, 2026, 2:36 AM EDT
Not yet recruiting Not applicable Interventional

Perioperative High-flow Nasal Oxygen in Patients Undergoing Robotic Surgery

NCT07591610
View directory record Official record
Conditions
Robotic Surgery
Interventions
High flow nasal oxygen
Device
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
190 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Sep 24, 2026, 2:36 AM EDT
Not yet recruiting Not applicable Interventional

Mechanical Ventilator Adjustments and Patient Dyspnea

NCT07701850
View directory record Official record
Conditions
Respiratory Failure, Dyspnea During Mechanical Ventilation, Mechanical Ventilation
Interventions
Change to VC/AC, Change in Tidal Volume, Change in inspiratory flow, Change in PEEP, Change to PSV
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Sep 24, 2026, 2:36 AM EDT
Completed Not applicable Interventional Results available

Sleep Disordered Breathing and Chronic Pain

NCT01457014
View directory record Official record
Conditions
Sleep Apnea Syndromes
Interventions
servo ventilation auto, Continuous positive airway pressure, servo ventilation manual
Device
Lead sponsor
Philips Respironics
Industry
Eligibility
21 Years to 70 Years
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
4
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Atlanta, Georgia + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 18, 2016 · Synced Sep 24, 2026, 2:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Clinical Evidence of pH Dependent ß2 Adrenergic Transport Mechanisms in the Airway

NCT01216748
View directory record Official record
Conditions
Healthy Volunteers
Interventions
quiet breathing, Hypocapnic Hyperventilation, Hypercapnic Hyperventilation, eucapnic hyperventilation
Other
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated May 26, 2016 · Synced Sep 24, 2026, 2:36 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Exercise and Carotid Artery Function in Metabolic Syndrome

NCT07430839
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
exercise, Diagnostics, Inhaled CO2-mixed air
Behavioral · Diagnostic Test · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 40 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 24, 2026 · Synced Sep 24, 2026, 2:36 AM EDT
Completed Not applicable Interventional Results available

RCT of Mesh Versus Jet Nebulizers on Clinical Outcomes During Mechanical Ventilation in the Intensive Care Unit

NCT02056119
View directory record Official record
Conditions
Respiratory Insufficiency
Interventions
Vibrating Mesh Nebulizer Arm, Jet Nebulizer Arm
Device
Lead sponsor
Rush University Medical Center
Other
Eligibility
1 Year and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 20, 2023 · Synced Sep 24, 2026, 2:36 AM EDT
Active, not recruiting No phase listed Observational

Clinical Markers of Dysphagia in Cardiac Surgical Patients

NCT05304416
View directory record Official record
Conditions
Cardiovascular Diseases, Dysphagia
Interventions
Fiberoptic Endoscopic Evaluation of Swallowing, Simultaneous FEES and Videofluoroscopy instrumental swallowing exam, Videofluoroscopy instrumental swallowing exam (VFSS), Voluntary Cough Peak Expiratory Flow (PEF) Testing, Reflex Cough Screen, Lingual Pressure Testing, Speech Testing
Diagnostic Test · Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 90 Years
Enrollment
347 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
2
States / cities
Gainesville, Florida • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Sep 24, 2026, 2:36 AM EDT
Recruiting Not applicable Interventional

End-Tidal Oxygen for Intubation in the Emergency Department

NCT06578468
View directory record Official record
Conditions
Critical Illness, Hypoxia, Respiratory Failure
Interventions
End-tidal oxygen monitor
Device
Lead sponsor
Sydney Local Health District
Government
Eligibility
18 Years and older
Enrollment
1,400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
3
States / cities
Minneapolis, Minnesota • Albuquerque, New Mexico • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 24, 2026, 2:36 AM EDT