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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Pulmonary Function Testing Clear all
Completed No phase listed Observational

Evaluating Deep Breathing in Health Participants Using a Device Called Impulse Oscillometry

NCT05085795
View directory record Official record
Conditions
Breathing, Mouth, Lung Function Decreased
Interventions
Impulse Oscillometer
Device
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
20 participants
Timeline
2021 – 2023
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 14, 2023 · Synced Sep 9, 2026, 2:15 AM EDT
Enrolling by invitation Phase 3 Interventional

A Study Evaluating the Long-Term Efficacy and Safety of Ralinepag in Subjects With PAH Via an Open-Label Extension

NCT03683186
View directory record Official record
Conditions
PAH, Pulmonary Hypertension, Pulmonary Arterial Hypertension, Hypertension, Connective Tissue Diseases, Familial Primary Pulmonary Hypertension, Vascular Diseases, Cardiovascular Diseases, Hypertension, Pulmonary, Lung Diseases, Respiratory Tract Disease
Interventions
Ralinepag
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
48
States / cities
Phoenix, Arizona • Tucson, Arizona • La Jolla, California + 38 more
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Not applicable Interventional

Incentive Spirometry Prehabilitation Study

NCT03994848
View directory record Official record
Conditions
Pulmonary Disease
Interventions
Spirometry Group
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Dec 29, 2021 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Not applicable Interventional

Exercise Training Study for Patients With Cystic Fibrosis

NCT00609050
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Self-Regulated Exercise with Telephone Reinforcement, Standard Treatment, Qualitative Approach
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
10 Years to 18 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 18, 2016 · Synced Sep 9, 2026, 2:15 AM EDT
Recruiting No phase listed Observational

Detection of Unsuspected Small Airways Obstruction in Cystic Fibrosis

NCT03839992
View directory record Official record
Conditions
Cystic Fibrosis in Children
Interventions
spirometry
Diagnostic Test
Lead sponsor
Gelb, Arthur F., M.D.
Individual
Eligibility
5 Years to 40 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
2
States / cities
Lakewood, California • Long Beach, California
Source: ClinicalTrials.gov public record
Updated Oct 25, 2023 · Synced Sep 9, 2026, 2:15 AM EDT
Terminated Phase 3 Interventional Results available

Simvastatin Therapy for Moderate and Severe COPD

NCT01061671
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
simvastatin, Placebo
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
40 Years to 80 Years
Enrollment
885 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
35
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 26 more
Source: ClinicalTrials.gov public record
Updated Jan 1, 2018 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Phase 2 Interventional Results available

Improving Ventilatory Capacity in Those With Chronic High Level SCI

NCT05041322
View directory record Official record
Conditions
Spinal Cord Injuries
Interventions
Buspirone, Placebo
Drug
Lead sponsor
Spaulding Rehabilitation Hospital
Other
Eligibility
18 Years to 50 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 17, 2025 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Not applicable Interventional Results available

Remote Pulmonary Function Testing and Nurse Coaching in ALS

NCT04490148
View directory record Official record
Conditions
ALS
Interventions
remote pulmonary function testing, standard pulmonary function testing, Nurse Respiratory Health Coaching (NRHC)
Device · Behavioral
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 23, 2024 · Synced Sep 9, 2026, 2:15 AM EDT
Not listed No phase listed Observational

Respiratory Monitoring System Safety and Performance Study

NCT05812378
View directory record Official record
Conditions
Pulmonary Function Test, Tidal Volume, Respiratory Rate, Ventilators, Breathing Sounds
Interventions
Not listed
Lead sponsor
RTM Vital Signs, LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
50 participants
Timeline
2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 12, 2023 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Not applicable Interventional Results available

SPECT/CT in Measuring Lung Function in Patients With Cancer Undergoing Radiation Therapy

NCT01982123
View directory record Official record
Conditions
Lung Carcinoma, Malignant Neoplasm
Interventions
SPECT/CT, Single Photon Emission Computed Tomography, Technetium Tc-99m Albumin Aggregated, Technetium Tc-99m DTPA
Diagnostic Test · Procedure · Radiation + 1 more
Lead sponsor
University of Washington
Other
Eligibility
19 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
2
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 12, 2018 · Synced Sep 9, 2026, 2:15 AM EDT
Recruiting No phase listed Observational

Cardiopulmonary Exercise Testing and Oscillometry for the Evaluation of Dyspnea

NCT06554353
View directory record Official record
Conditions
Breathing, Mouth, Lung Function Decreased, Dyspnea, Shortness of Breath
Interventions
Oscillometer
Device
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
50 participants
Timeline
2024 – 2026
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 9, 2026, 2:15 AM EDT
Terminated Phase 2 Interventional

PRIMEx - A Study of 2 Doses of Oral CXA-10 in Pulmonary Arterial Hypertension (PAH)

NCT03449524
View directory record Official record
Conditions
PAH
Interventions
75mg CXA-10, 150mg CXA-10, Placebo
Drug · Other
Lead sponsor
Complexa, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
40
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 34 more
Source: ClinicalTrials.gov public record
Updated Aug 9, 2020 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Phase 2 Interventional

A Study to Test Whether BI 1819479 Improves Lung Function in People With Idiopathic Pulmonary Fibrosis (IPF)

NCT06335303
View directory record Official record
Conditions
Idiopathic Pulmonary Fibrosis
Interventions
BI 1819479, Placebo matching BI 1819479
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
40 Years and older
Enrollment
322 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
15
States / cities
Birmingham, Alabama • Lakewood, Colorado • Kissimmee, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Jul 26, 2026 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nitrate Supplementation During Final Examination Stress

NCT03159273
View directory record Official record
Conditions
Airway Disease
Interventions
Beetroot Juice Group
Dietary Supplement
Lead sponsor
Southern Methodist University
Other
Eligibility
18 Years to 50 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated May 22, 2018 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Phase 4 Interventional Results available

A Randomized Study, Comparing Fluticasone Furoate/Umeclidinium/Vilanterol (FF/UMEC /VI) Single Inhaler Triple Therapy, Versus Multiple Inhaler Therapy (Budesonide/Formoterol Plus Tiotropium) in Subjects With Chronic Obstructive Pulmonary Disease (COPD)

NCT03478696
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
budesonide/formoterol, albuterol/salbutamol, FF/UMEC/VI, Placebo to match budesonide/formoterol, tiotropium, Placebo to match FF/UMEC/VI, placebo to match tiotropium, ELLIPTA, MDI, HandiHaler
Drug · Device
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
40 Years and older
Enrollment
732 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
42
States / cities
Mobile, Alabama • Bakersfield, California • Sacramento, California + 35 more
Source: ClinicalTrials.gov public record
Updated Oct 27, 2020 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Nitric Oxide Bioavailability in Chronic Obstructive Pulmonary Disease (COPD)

NCT01398943
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Tetrahydrobiopterin (BH4), Antioxidant Cocktail
Drug · Dietary Supplement
Lead sponsor
Augusta University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 10, 2017 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Phase 2 Interventional

Study of TNFR:Fc (Enbrel) in the Treatment of Asthma

NCT00001893
View directory record Official record
Conditions
Asthma
Interventions
TNFR:Fc
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1999
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 9, 2026, 2:15 AM EDT
Completed No phase listed Observational

Study of Lung Function in Children Who Have Undergone Bone Marrow Transplantation

NCT00009711
View directory record Official record
Conditions
Long-term Effects Secondary to Cancer Therapy in Children, Pulmonary Complications
Interventions
management of therapy complications
Procedure
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
Up to 17 Years
Enrollment
280 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2005
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 30, 2013 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Phase 1Phase 2 Interventional

Safety, Pk and Anti-inflammatory Effects of CC10 Protein in Premature Infants With Respiratory Distress Syndrome (RDS)

NCT01473264
View directory record Official record
Conditions
Respiratory Distress Syndrome in Premature Infant, Bronchopulmonary Dysplasia
Interventions
recombinant human CC10 (rhCC10), placebo
Drug
Lead sponsor
Clarassance, Inc.
Industry
Eligibility
24 Weeks to 29 Weeks
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2003
U.S. locations
4
States / cities
Wilmington, Delaware • Baltimore, Maryland • Mineola, New York
Source: ClinicalTrials.gov public record
Updated Nov 16, 2011 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Onset of Effect and Time Course of Change in Lung Function With Benralizumab in Severe, Uncontrolled Asthma Patients With Eosinophilic Inflammation

NCT02869438
View directory record Official record
Conditions
Asthma
Interventions
Benralizumab, Placebo
Drug · Other
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 75 Years
Enrollment
233 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
16
States / cities
Scottsboro, Alabama • Gilbert, Arizona • Denver, Colorado + 13 more
Source: ClinicalTrials.gov public record
Updated Oct 28, 2019 · Synced Sep 9, 2026, 2:15 AM EDT
Completed No phase listed Observational

Validation of Chronic Obstructive Pulmonary Disease (COPD) Algorithm

NCT07223749
View directory record Official record
Conditions
COPD (Chronic Obstructive Pulmonary Disease)
Interventions
Not listed
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
40 Years and older
Enrollment
425 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 9, 2026, 2:15 AM EDT
Withdrawn No phase listed Observational

Transfer Impedance in Cystic Fibrosis

NCT00743158
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Not listed
Lead sponsor
Boston Children's Hospital
Other
Eligibility
2 Years to 25 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 14, 2023 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Phase 4 Interventional Results available

Phase 4 COPD and Suboptimal Inspiratory Flow Rate

NCT05165485
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Revefenacin, Tiotropium, Revefenacin Placebo, Tiotropium Placebo
Drug
Lead sponsor
Theravance Biopharma
Industry
Eligibility
40 Years and older
Enrollment
404 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
76
States / cities
Jasper, Alabama • Phoenix, Arizona • Tucson, Arizona + 67 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2024 · Synced Sep 9, 2026, 2:15 AM EDT
Completed Phase 3 Interventional Results available

A Phase III Parallel Group Study, Comparing the Efficacy, Safety and Tolerability of the Fixed Dose Combination (FDC) of Fluticasone Furoate+Umeclidinium Bromide+Vilanterol (FF/UMEC/VI) With the FDC of FF/VI in Subjects With Inadequately Controlled Asthma

NCT02924688
View directory record Official record
Conditions
Asthma
Interventions
FF/UMEC/VI (100/31.25/25) mcg, FF/UMEC/VI (100/62.5/25) mcg, FF/UMEC/VI (200/31.25/25) mcg, FF/UMEC/VI (200/62.5/25) mcg, FF/VI (100/25) mcg, FF/VI (200/25) mcg, Fluticasone/salmeterol (FSC), Albuterol/salbutamol, ELLIPTA DPI, DISKUS DPI, METERED-DOSE INHALER (MDI)
Drug · Device
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
2,436 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
99
States / cities
Birmingham, Alabama • Mobile, Alabama • Montgomery, Alabama + 89 more
Source: ClinicalTrials.gov public record
Updated Mar 25, 2021 · Synced Sep 9, 2026, 2:15 AM EDT