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ClinicalTrials.gov public records Last synced Oct 21, 2026, 2:46 PM EDT

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Showing 1–24 of 349 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Normal Breathing Clear all
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

The Role of Breathing Perception in Respiratory Control

NCT07470099
View directory record Official record
Conditions
Work of Breathing
Interventions
Ambient Noise, Increased Auditory Feedback, Noise Distraction
Other
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 40 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027 – 2028
U.S. locations
1
States / cities
Bloomington, Indiana
Source: ClinicalTrials.gov public record
Updated Mar 13, 2026 · Synced Oct 21, 2026, 2:46 PM EDT
Completed Not applicable Interventional Results available

Use of Novel Sinusonic Device for Prevention of Community Acquired Upper Respiratory Infection (URI)

NCT04468204
View directory record Official record
Conditions
Upper Respiratory Infection
Interventions
SinuSonic Device, Sham SinuSonic Device
Device
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Dec 20, 2022 · Synced Oct 21, 2026, 2:46 PM EDT
Completed Not applicable Interventional Results available

Role of Endorphins in Perception of Dyspnea With Resistive Loading in Chronic Obstructive Pulmonary Disease (COPD)

NCT00958919
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
naloxone, normal saline
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
50 Years to 90 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Apr 11, 2013 · Synced Oct 21, 2026, 2:46 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Heart Transplantation - Renewal

NCT05521399
View directory record Official record
Conditions
Transplant, Heart, Magnetic Resonance Imaging
Interventions
MRI Sequencing, MRI Testing (pediatric), MRI Testing
Diagnostic Test
Lead sponsor
Northwestern University
Other
Eligibility
Not listed
Enrollment
247 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2030
U.S. locations
2
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 24, 2026 · Synced Oct 21, 2026, 2:46 PM EDT
Completed Not applicable Interventional

Comparison of Mask Ventilation Techniques in Patients Requiring General Anesthesia

NCT02580526
View directory record Official record
Conditions
Apnea
Interventions
V-E mask ventilation for one minute, C-E mask ventilation for one minute
Procedure
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 11, 2017 · Synced Oct 21, 2026, 2:46 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Nebulized Hypertonic Saline for Bronchiolitis

NCT00619918
View directory record Official record
Conditions
Bronchiolitis
Interventions
Nebulized 3% saline, Nebulized 0.9% saline
Drug
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
Up to 24 Months
Enrollment
447 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
2
States / cities
Los Angeles, California • Oakland, California
Source: ClinicalTrials.gov public record
Updated Nov 5, 2024 · Synced Oct 21, 2026, 2:46 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

OSA in Pregnant Women With Chronic HTN

NCT03230110
View directory record Official record
Conditions
Sleep Apnea, Obstructive, Pregnancy, Hypertension
Interventions
WP200U home sleep study device
Diagnostic Test
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
2
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 24, 2019 · Synced Oct 21, 2026, 2:46 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of Inhalation of 20,000 EU CCRE in Normal Volunteers Compared to Allergic Asthmatic Individuals

NCT00839124
View directory record Official record
Conditions
Asthma, Hypersensitivity
Interventions
Clinical Center Reference Endotoxin (CCRE)
Biological
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 50 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 5, 2012 · Synced Oct 21, 2026, 2:46 PM EDT
Recruiting Not applicable Interventional

Patient-reported Outcomes of Donor Site Healing Using Different Palatal Protection Techniques

NCT06892496
View directory record Official record
Conditions
Mucosal Erosion, Gingival Recession
Interventions
Visual Analog scale (VAS) questionnaire, Vacuum-formed retainer (VFR) technique, 3-D printed acrylic resin stent (3DS) technique, Flowable resin composite stent (FRC) technique, Photographs of the patient's palate, Measuring graft dimensions, Chairside Polymer Stent
Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Oct 21, 2026, 2:46 PM EDT
Completed No phase listed Observational

Tissue-specific Insulin Resistance in Obstructive Sleep Apnea: Role of Hypoxia

NCT03695315
View directory record Official record
Conditions
Obstructive Sleep Apnea, Hypoxia, Insulin Resistance
Interventions
Continuous Positive Airway Pressure
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
19 Years to 100 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 13, 2026 · Synced Oct 21, 2026, 2:46 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

The Measurement of Intraocular Pressure in Normal Children Under General Anesthesia With and Without Nitrous Oxide and Anesthetic Eye Drops

NCT01925391
View directory record Official record
Conditions
Glaucoma, Intraocular Pressure, Anesthesia
Interventions
Tono-pen XL Applanation tonometer + Ocu-film +
Drug
Lead sponsor
University of Miami
Other
Eligibility
1 Year to 18 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
2
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jun 16, 2014 · Synced Oct 21, 2026, 2:46 PM EDT
Completed Not applicable Interventional Results available

Non-Contrast 4DCT to Detect Pulmonary Thromboembolic Events

NCT03183063
View directory record Official record
Conditions
Pulmonary Thromboembolisms, Pulmonary Embolism
Interventions
4DCT and SPECT/CT, 4DCT with BiPAP and SPECT/CT, 4DCT with CTA in suspected PE
Device
Lead sponsor
Thomas Guerrero
Other
Eligibility
18 Years and older
Enrollment
139 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 5, 2020 · Synced Oct 21, 2026, 2:46 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Measuring the Neurological Benefits of Intermittent Hypoxia Therapy With MRI

NCT05183113
View directory record Official record
Conditions
Spinal Cord Injuries
Interventions
Acute Intermittent Hypoxia
Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 60 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Oct 21, 2026, 2:46 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Photobiomodulation for Myofascial Pelvic Pain

NCT05926752
View directory record Official record
Conditions
Pelvic Pain, Levator Ani Syndrome, Spastic Pelvic Floor Syndrome, Chronic Pelvic Pain Syndrome, Myalgia of Pelvic Floor
Interventions
SoLá therapy, Pelvic floor physical therapy
Device · Other
Lead sponsor
Orlando VA Medical Center
Federal
Eligibility
18 Years and older · Female only
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Jul 3, 2023 · Synced Oct 21, 2026, 2:46 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Quantifying Body Composition and Liver Disease in Children Using Free-Breathing MRI and MRE

NCT04591106
View directory record Official record
Conditions
NAFLD, NASH - Nonalcoholic Steatohepatitis
Interventions
Magnetic resonance imaging (MRI), Magnetic resonance elastography (MRE), Prototype MRE soft flexible passive transducer paddle
Diagnostic Test · Device
Lead sponsor
University of California, Los Angeles
Other
Eligibility
1 Week to 40 Years
Enrollment
135 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Oct 21, 2026, 2:46 PM EDT
Withdrawn Not applicable Interventional

Titration of PEEP During Mechanical Ventilation in Patients With ARDS Using Electrical Impedance Tomography.

NCT02596178
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome
Interventions
Electrical Impedance Tomography
Device
Lead sponsor
Boston Children's Hospital
Other
Eligibility
2 Years to 35 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 5, 2019 · Synced Oct 21, 2026, 2:46 PM EDT
Recruiting Not applicable Interventional

Hypoxia Pathways for Early Recovery After Spinal Cord Injury

NCT07002437
View directory record Official record
Conditions
Spinal Cord Injuries (SCI)
Interventions
Augmented Acute Intermittent Hypoxia (aAIH), Acute Intermittent Hypercapnic-Hypoxia (AIHH), Sham AIH
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 70 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 3, 2025 · Synced Oct 21, 2026, 2:46 PM EDT
Not yet recruiting No phase listed Observational Accepts healthy volunteers

Hand Perfusion and Pulse Oximetry Performance

NCT06925646
View directory record Official record
Conditions
Oxygen Saturation
Interventions
Finger hyperperfusion via adenosine, Finger hypoperfusion via by norepinephrine, Baseline hypoxic test
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 13, 2026 · Synced Oct 21, 2026, 2:46 PM EDT
Not yet recruiting Not applicable Interventional

KPAP Adherence Crossover Study

NCT06413134
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
KPAP, APAP
Device
Lead sponsor
SleepRes Inc.
Industry
Eligibility
20 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Murfreesboro, Tennessee
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Oct 21, 2026, 2:46 PM EDT
Completed Phase 4 Interventional Results available

Isopropyl Alcohol vs Ondansetron for Nausea in the Emergency Department

NCT02760069
View directory record Official record
Conditions
Nausea
Interventions
Inhaled isopropyl alcohol, Oral ondansetron, Inhaled normal saline, Oral placebo
Drug
Lead sponsor
Brooke Army Medical Center
Federal
Eligibility
18 Years and older
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jul 23, 2020 · Synced Oct 21, 2026, 2:46 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cough Reflex Sensitivity and Bronchial Hyper-responsiveness

NCT01777867
View directory record Official record
Conditions
Gastroesophageal Reflux Disease, Chronic Cough, Broncho-hyperreactivity
Interventions
Cough Reflex Sensitivity, Methacholine Challenge
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 60 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 17, 2017 · Synced Oct 21, 2026, 2:46 PM EDT
Enrolling by invitation Not applicable Interventional

App-based Breathing Program for Migraine Relief

NCT07297901
View directory record Official record
Conditions
Migraine, Heart Rate Variability (HRV), Autonomic Nervous System, Headache (Migraine), Headache, Chronic Pain, mHealth, Breathing
Interventions
Baseline Survey, Heart rate variability biofeedback, Sham Control Group
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Oct 21, 2026, 2:46 PM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Chronic Lung Allograft Dysfunction MRI Study

NCT06406777
View directory record Official record
Conditions
Chronic Lung Allograft Dysfunction Lung MRI (CLAD)
Interventions
Spirometry, Contrast Lung Computed Tomography (CT) Scan, Oxygen enhanced magnetic resonance imaging (OE-MRI) Scan, 129Xe MRI scans
Diagnostic Test · Drug
Lead sponsor
Sean Fain
Other
Eligibility
18 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Oct 21, 2026, 2:46 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Examine the Effects of Meditation on Daily Psychological Stress Responses in Woman With a History of Child Adversity

NCT04606199
View directory record Official record
Conditions
Stress, Psychological Stress, Child Maltreatment, Depressive Symptoms, Signs and Symptoms, Psychological Distress, Psychological
Interventions
Mindfulness-based intervention, up to 5 minutes 0-3 times/day
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
30 Years to 60 Years · Female only
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 4, 2025 · Synced Oct 21, 2026, 2:46 PM EDT