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ClinicalTrials.gov public records Last synced Oct 24, 2026, 3:09 PM EDT

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Showing 97–120 of 303 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Breath Testing Clear all
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

Antibiotic Treatment and Long-term Outcomes of Patients With Pseudomyxoma Peritonei of Appendiceal Origin

NCT02387203
View directory record Official record
Conditions
Pseudomyxoma Peritonei, Appendiceal Neoplasms
Interventions
PrevPac (Prevacid, Amoxicillin, Clarithromycin)
Drug
Lead sponsor
Mercy Medical Center
Other
Eligibility
21 Years and older
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 19, 2024 · Synced Oct 24, 2026, 3:09 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Submaximal Cardiopulmonary Exercise Testing for Detection of Myocardial Injury After Noncardiac Surgery

NCT06474754
View directory record Official record
Conditions
Myocardial Injury After Non-cardiac Surgery, Submaximal Exercise Performance, Preoperative Period
Interventions
High-sensitivity troponin, serum, Submaximal Cardiopulmonary Exercise Testing, Duke Activity Status Index
Diagnostic Test
Lead sponsor
Yale University
Other
Eligibility
45 Years and older
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 22, 2026 · Synced Oct 24, 2026, 3:09 PM EDT
Not listed No phase listed Observational

Breath Test for Biomarkers in Humans Receiving Total Body Irradiation

NCT02152722
View directory record Official record
Conditions
Radiation Injury
Interventions
Not listed
Lead sponsor
Menssana Research, Inc.
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
3
States / cities
Atlanta, Georgia • Hackensack, New Jersey • New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 7, 2015 · Synced Oct 24, 2026, 3:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Psychophysiological Effects of Controlled Respiration and Mindfulness

NCT05304000
View directory record Official record
Conditions
Stress, Physiological, Stress, Emotional, Insomnia
Interventions
Mindfulness Meditation, Cyclic Sighing Breathing, Box Breathing, Cyclic Hyperventilation with Retention
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
2
States / cities
Palo Alto, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated May 6, 2022 · Synced Oct 24, 2026, 3:09 PM EDT
Terminated Phase 2 Interventional

BreathID Multi-center HCV Liver Breath Test Study

NCT00350714
View directory record Official record
Conditions
Hepatitis C
Interventions
MBT and BreathID
Other
Lead sponsor
Meridian Bioscience, Inc.
Industry
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
4
States / cities
New York, New York • Houston, Texas • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Dec 20, 2022 · Synced Oct 24, 2026, 3:09 PM EDT
Active, not recruiting Not applicable Interventional

Impact of Diaphragmatic Breathing Coaching on Deep Inspiration Breath Hold Reproducibility and Organ Protection

NCT06747533
View directory record Official record
Conditions
Breathing, Mouth
Interventions
CT simulation
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 22, 2026 · Synced Oct 24, 2026, 3:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Establishing Clinical Utility for a New Diagnostic Test for Patients With Shortness of Breath

NCT04693793
View directory record Official record
Conditions
Dyspnea, Unexplained Chronic Dyspnea
Interventions
Education Materials and Janssen Test
Other
Lead sponsor
Qure Healthcare, LLC
Industry
Eligibility
Not listed
Enrollment
219 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Dec 7, 2023 · Synced Oct 24, 2026, 3:09 PM EDT
Not yet recruiting Not applicable Interventional

Self-Managed Exercise in Chronic Stroke

NCT07799987
View directory record Official record
Conditions
Stroke
Interventions
Exercise, Behavioral Management Program
Behavioral
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 89 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Oct 24, 2026, 3:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Breathing on Cognitive Performance and Stress

NCT06986135
View directory record Official record
Conditions
Stress, Acute Stress Reaction, Breathing Techniques, Cognitive Performance
Interventions
Box Breathing, Prolonged Exhalation, Normal Breathing
Other
Lead sponsor
Texas State University
Other
Eligibility
18 Years to 39 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
San Marcos, Texas
Source: ClinicalTrials.gov public record
Updated May 22, 2025 · Synced Oct 24, 2026, 3:09 PM EDT
Completed No phase listed Observational

Adiposity and Airway Inflammation in HIV-Associated Airway Disease

NCT02975258
View directory record Official record
Conditions
Asthma, HIV, Adiposity
Interventions
Blood draw, Questionnaires, Spirometry, Methacholine challenge test, Quantitative CT scans, Urine pregnancy test, Adipose biopsy, Exhaled nitric oxide measurement
Procedure · Other · Radiation
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 80 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 13, 2017 · Synced Oct 24, 2026, 3:09 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Novel vs. Usual Brand Menthol Cigarettes on Abuse Liability

NCT07564648
View directory record Official record
Conditions
Cigarette Addiction, Tobacco Use Disorder
Interventions
Biospecimen Collection, Questionnaire Administration, Cigarette Purchase Task, Cross-Price Elasticity Task, Daily Diary Surveys, Progressive Ratio Task
Behavioral
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years and older
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 14, 2026 · Synced Oct 24, 2026, 3:09 PM EDT
Completed Not applicable Interventional Results available

Rifaximin for the Treatment of Persistent Symptoms in Patients With Celiac Disease

NCT01137955
View directory record Official record
Conditions
Celiac Disease
Interventions
Rifaximin, Placebo
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 29, 2022 · Synced Oct 24, 2026, 3:09 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Longitudinal, Observational Study of Primary Ciliary Dyskinesia in Adults

NCT05685186
View directory record Official record
Conditions
Primary Ciliary Dyskinesia
Interventions
Spirometry, Multiple Breath Washout (MBW), Mucociliary Clearance (MCC), CT of the chest, MRI of the chest
Diagnostic Test
Lead sponsor
ReCode Therapeutics
Industry
Eligibility
18 Years to 60 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Oct 24, 2026, 3:09 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 24, 2026, 3:09 PM EDT
Completed Not applicable Interventional

Study to Evaluate NA-NOSE for Monitoring and Detecting Recurrence in Early Stage Lung Cancer

NCT01840150
View directory record Official record
Conditions
Stage IA Non-small Cell Lung Cancer, Stage IB Non-small Cell Lung Cancer, Stage IIA Non-small Cell Lung Cancer, Stage IIB Non-small Cell Lung Cancer
Interventions
breath test, laboratory biomarker analysis
Procedure · Other
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 13, 2023 · Synced Oct 24, 2026, 3:09 PM EDT
Completed Not applicable Interventional

Stress Reduction Program in Patients With Malignant Brain Tumors and Their Family Caregivers

NCT00376818
View directory record Official record
Conditions
Brain and Central Nervous System Tumors, Psychosocial Effects of Cancer and Its Treatment
Interventions
exercise intervention, educational intervention, physiologic testing, management of therapy complications, mind-body intervention procedure, Measurement of stress-related hormones
Behavioral · Other · Procedure
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 4, 2012 · Synced Oct 24, 2026, 3:09 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

MagniXene MRI Use in Patients With Asthma and COPD to Assess Regional Lung Function by Delineating Ventilation Defects

NCT01833390
View directory record Official record
Conditions
Asthma, COPD, Healthy
Interventions
HXe MRI lung ventilation
Drug
Lead sponsor
Xemed LLC
Industry
Eligibility
21 Years to 75 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 11, 2015 · Synced Oct 24, 2026, 3:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Stress-motivated Alcohol Use as a Value-based Decision-making Process

NCT06264791
View directory record Official record
Conditions
Psychological Stress, Alcohol Intoxication
Interventions
Stress, Alcohol
Other
Lead sponsor
University of Washington
Other
Eligibility
21 Years to 50 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 30, 2026 · Synced Oct 24, 2026, 3:09 PM EDT
Completed Not applicable Interventional

Technological Innovations in Behavioral Treatments for Cigarette Smoking

NCT00926939
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Reinforcement for the abstinence of smoking, Reinforcement for submission of videos with CO sample
Behavioral
Lead sponsor
National Development and Research Institutes, Inc.
Other
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 14, 2015 · Synced Oct 24, 2026, 3:09 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Mapping Brain Glutamate in Humans: Sex Differences in Cigarette Smokers

NCT05279053
View directory record Official record
Conditions
Sex, Cigarette Smoking
Interventions
Abstinence and Smoking
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 45 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 20, 2026 · Synced Oct 24, 2026, 3:09 PM EDT
Completed No phase listed Observational

Exploratory Study of Volatile Organic Compounds in Alveolar Breath

NCT03451994
View directory record Official record
Conditions
Nutritional and Metabolic Diseases
Interventions
Breath test
Other
Lead sponsor
Mebo Research, Inc.
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2020
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 14, 2020 · Synced Oct 24, 2026, 3:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Smartphone-based Financial Incentives

NCT03922360
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Smartphone-based Financial Incentives, Best Practices
Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older · Female only
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Oct 24, 2026, 3:09 PM EDT
Completed Early Phase 1 Interventional

Accurate Screening Tools for Dysphagia in Amyotrophic Lateral Sclerosis (ALS)

NCT02710162
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis
Interventions
Micro Mouth Pressure Meter, Iowa Oral Performance Instrument, Electrical Impedance Myography, Capsaicin, Videofluoroscopic Swallowing Study, Pulmonary Function Testing, Swallowing Related Quality of Life Questionnaire, Functional Oral Intake Scale, Amyotrophic Lateral Sclerosis Functional Rating Scale-Revised, Eating Assessment Tool-10, Communicative Effectiveness Survey, The Center for Neurologic Studies Bulbar Function Scale
Device · Drug · Procedure + 1 more
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 85 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 21, 2017 · Synced Oct 24, 2026, 3:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Influence of Lifestyle Factors on Neutrophil Migration Pilot Study

NCT02411318
View directory record Official record
Conditions
Neutrophil Chemotactic Response
Interventions
Exercise, ProLab 200mg caffeine capsule, Ethanol ingestion, Glucose Tolerance Drink
Behavioral · Drug · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
21 Years to 60 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 17, 2020 · Synced Oct 24, 2026, 3:09 PM EDT