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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: air method Clear all
Terminated Not applicable Interventional Accepts healthy volunteers

Comparision of Air Versus CO2 for Distention During Sigmoidoscopy

NCT00771290
View directory record Official record
Conditions
Colorectal Surgery
Interventions
Air insufflation with standard endoscopy unit, CO2 insufflation for colonoscopy (special CO2 insufflation unit)
Procedure
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 30, 2024 · Synced Sep 5, 2026, 9:19 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Text-Based Messaging Strategies for Preventing Subsequent Problematic Alcohol Use

NCT06318975
View directory record Official record
Conditions
Alcohol Drinking, Binge Drinking, Text Messaging
Interventions
Brief Alcohol Intervention, Automated and Targeted Text Messages
Behavioral
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
7,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Sep 5, 2026, 9:19 PM EDT
Active, not recruiting Not applicable Interventional

Operating Room Air Filtration/Sterilization

NCT04610294
View directory record Official record
Conditions
Surgery
Interventions
Functioning Aerus air filtration/sterilization, Deactivated Aerus air filtration/sterilization
Device
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
66,273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Sep 5, 2026, 9:19 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Tubomanometry and EarPopper Devices for Eustachian Tube Function Testing

NCT03850197
View directory record Official record
Conditions
Eustachian Tube Dysfunction
Interventions
EarPopper, Tympanometry, Tubomanometry
Device
Lead sponsor
Cuneyt M. Alper
Other
Eligibility
5 Years to 60 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 12, 2020 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Awareness, Information, and Resources for Lung Cancer Screening Program for Community-Partnered Lung Cancer Screening

NCT04635761
View directory record Official record
Conditions
Lung Carcinoma
Interventions
Educational Intervention, Questionnaire Administration
Behavioral
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
292 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Sep 27, 2022 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Phase 2 Interventional

4-Dimensional CT Derived Ventilation Versus SPECT Aerosol Ventilation in Patients With Thoracic Malignancies

NCT00531180
View directory record Official record
Conditions
Esophageal Cancer, Lung Cancer
Interventions
4D CT scans, Lung Function Imaging
Procedure
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Not listed
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2018
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 24, 2018 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Normal Breathing and Swallowing in Healthy Volunteers

NCT03122145
View directory record Official record
Conditions
Healthy
Interventions
Capsaicin, Videofluoroscopic swallow study
Drug · Device
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 100 Years
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 13, 2021 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

DRIIVE (Data and Research on Interventions to Improve the Vehicular Environment)

NCT02381626
View directory record Official record
Conditions
Vehicular Environment
Interventions
HEPA air purifier, questionnaires, Log-book, Urine sample
Device · Behavioral · Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
21 Years to 90 Years · Male only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 4, 2021 · Synced Sep 5, 2026, 9:19 PM EDT
Terminated Early Phase 1 Interventional

19F MRI of Ventilation in Subjects With Cystic Fibrosis Undergoing Treatment for Pulmonary Exacerbation

NCT03497117
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Lung Clearance Index, MRI with PFP
Device · Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 99 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Clinical Investigation and Validation of a Self-fitted Air-conduction Hearing Aid

NCT06167161
View directory record Official record
Conditions
Hearing Loss
Interventions
Hearing aid
Device
Lead sponsor
Concha Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
2
States / cities
San Jose, California • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 17, 2023 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Treatment of Peri-implant Mucositis and Supportive Peri-implant Therapy

NCT06137846
View directory record Official record
Conditions
Peri-implant Mucositis
Interventions
Air-Polish, Ultrasonic
Device
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 85 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 23, 2025 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Three-Group Study to Examine the Efficacy of the Air up® Drinking System at Improving Hydration and Associated Health Outcomes

NCT06290479
View directory record Official record
Conditions
Water Intake
Interventions
Air Up® Peach Pod, Air Up® Orangeade Pod
Dietary Supplement
Lead sponsor
air up GmbH
Industry
Eligibility
18 Years to 50 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Jul 18, 2024 · Synced Sep 5, 2026, 9:19 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Epigenetic Regulation of Human Adipose Tissue Distribution

NCT02728635
View directory record Official record
Conditions
Obesity
Interventions
Dual-energy X-ray absorptiometry (DEXA)/ Magnetic resonance imaging (MRI) and Magnetic resonance spectroscopy (MRS), Adipose tissue biopsies, FSIGTT/ RMR
Other · Procedure
Lead sponsor
AdventHealth Translational Research Institute
Other
Eligibility
18 Years to 45 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2026
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Improving Resiliency in Air Force Personnel

NCT05460663
View directory record Official record
Conditions
Military Personnel, Health Promotion
Interventions
Stress Management and Resilience Training (SMART)
Behavioral
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Dayton, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 7, 2024 · Synced Sep 5, 2026, 9:19 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers

Cerebrovascular Reactivity Assessed With fNIRS as a Biomarker of TCVI After Acute Traumatic Brain Injury in Military

NCT04058132
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Sildenafil Citrate 50Mg Tab, functional Near-infrared Spectroscopy (fNIRS), Carbon Dioxide (CO2) 5%, Neuropsychological Assessments, Gadolinium contrast infusion, Blood sample collection for research purposes, Structural brain Magnetic Resonance Imaging (MRI
Drug · Device · Other + 1 more
Lead sponsor
Uniformed Services University of the Health Sciences
Federal
Eligibility
18 Years to 55 Years
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 27, 2024 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Phase 4 Interventional Results available

Behaviorally Enhanced Counseling on Nicotine Dependence (BEACON) Trial.

NCT00991081
View directory record Official record
Conditions
Smoking
Interventions
Counseling, Self-help guide, Pharmacotherapy, Genetic feedback, verbal, Genetic feedback, printed
Behavioral · Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
3
States / cities
Menlo Park, California • Stanford, California • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 18, 2012 · Synced Sep 5, 2026, 9:19 PM EDT
Terminated Phase 2 Interventional Results available

Photodynamic Therapy Using HPPH in Treating Patients With Advanced Non-Small Cell Lung Cancer That Blocks the Air Passages

NCT00528775
View directory record Official record
Conditions
Lung Cancer
Interventions
HPPH, endoscopic procedure
Drug · Procedure
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 9, 2014 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Not applicable Interventional Results available

Clinical Evaluation of Water Immersion Colonoscopy Insertion Technique

NCT00671177
View directory record Official record
Conditions
Colonoscopy, Digestive System, Endoscopy, Gastrointestinal Disease
Interventions
water immersion colonoscopy, standard air colonoscopy
Procedure
Lead sponsor
VA Palo Alto Health Care System
Federal
Eligibility
18 Years and older · Male only
Enrollment
229 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Apr 30, 2017 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Respiratory Motor Control and Blood Pressure Regulation After Spinal Cord Injury

NCT02396823
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
Respiratory Muscle Training
Behavioral
Lead sponsor
University of Louisville
Other
Eligibility
18 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2019
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Mar 6, 2025 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Not applicable Interventional

FLO2 for Recovery After SCI

NCT03833674
View directory record Official record
Conditions
Spinal Cord Injury (SCI)
Interventions
Daily AIH Block, Sham dAIH Block, Respiratory Strength Training Block, AIH + Strength Training Block
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 70 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated May 28, 2024 · Synced Sep 5, 2026, 9:19 PM EDT
Terminated Not applicable Interventional

Epidural Technique: Does it Really Matter to the Patient?

NCT03539796
View directory record Official record
Conditions
Anesthesia
Interventions
Dural puncture epidurals (DPE), Traditional epidurals (EPI), Combined-spinal epidural technique (CSE)
Procedure
Lead sponsor
Emory University
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 11, 2023 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Not applicable Interventional

Water-aided Colonoscopy vs Air Insufflation Colonoscopy in Colorectal Cancer Screening

NCT02041507
View directory record Official record
Conditions
Colorectal Cancer, Colorectal Adenomas, Colorectal Polyps, Pain
Interventions
Air insufflation method., Water Immersion method., Water Exchange method.
Other
Lead sponsor
Presidio Ospedaliero Santa Barbara
Other
Eligibility
50 Years to 70 Years
Enrollment
1,224 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 Apr 12, 2016 · Synced Sep 5, 2026, 9:19 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Health Research Participation: Experiences and Decisions of Military Members

NCT02518893
View directory record Official record
Conditions
Decision Making, Life Experiences
Interventions
Demographic Data, Interview
Other
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 80 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Sep 5, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Juice Types on the Responses to Air Pollution

NCT02027415
View directory record Official record
Conditions
Air Pollution
Interventions
Beet juice, Orange juice
Dietary Supplement
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 40 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Piscataway, New Jersey
Source: ClinicalTrials.gov public record
Updated Dec 12, 2017 · Synced Sep 5, 2026, 9:19 PM EDT