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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Firefighters Clear all
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Nutritional Supplementation on Occupational Performance in Firefighters

NCT06172543
View directory record Official record
Conditions
Fatigue
Interventions
Creatine Monohydrate, Control
Dietary Supplement
Lead sponsor
Ward Dobbs
Other
Eligibility
18 Years to 55 Years · Male only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
La Crosse, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 14, 2023 · Synced Sep 12, 2026, 9:12 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Occupational Exposures Among Firefighters

NCT06173843
View directory record Official record
Conditions
Cancer
Interventions
PFAS / heavy metal testing, exposures
Other
Lead sponsor
Vincere Cancer Center
Other
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2029
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 13, 2024 · Synced Sep 12, 2026, 9:12 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

R2P Field Test of the EMS LiftKit: Validating Usability, Usefulness, Desirability, and Effects on Musculoskeletal Injuries in EMS Providers

NCT05551143
View directory record Official record
Conditions
Musculoskeletal Disorder
Interventions
LiftKit
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 65 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 21, 2022 · Synced Sep 12, 2026, 9:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Total Worker Health for Wildland Firefighters

NCT05753358
View directory record Official record
Conditions
Health Behavior, Total Worker Health, Occupational Health
Interventions
Total Worker Health for Wildland Firefighters
Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Sep 12, 2026, 9:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Worksite Exercise Interventions for Low Back Injury Prevention in Firefighters

NCT02362243
View directory record Official record
Conditions
Low Back Pain
Interventions
Experimental Intervention, Placebo Comparator
Other
Lead sponsor
University of South Florida
Other
Eligibility
18 Years and older
Enrollment
264 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jul 1, 2018 · Synced Sep 12, 2026, 9:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Exercise & Diet Effects on CV Risk in Firefighters

NCT03344198
View directory record Official record
Conditions
Cardiovascular Risk Factor, Blood Pressure, Exercise, Diet Modification, Health Promotion
Interventions
Circuit Training exercise & Modified Mediterranean diet
Behavioral
Lead sponsor
University of New Hampshire
Other
Eligibility
18 Years to 70 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
San Marcos, California
Source: ClinicalTrials.gov public record
Updated Aug 6, 2023 · Synced Sep 12, 2026, 9:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Implementing Good Nutrition to Improve, Transform, and Enhance (IGNITE) Firefighters' Health

NCT06567561
View directory record Official record
Conditions
Cancer, Inflammation, Microbiome, Immune Function
Interventions
Whole Foods Plant-Based Diet, Usual Firehouse Diet
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Apr 7, 2026 · Synced Sep 12, 2026, 9:12 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Pre-malignant States to Hematologic Malignancies in Firefighters

NCT06870760
View directory record Official record
Conditions
Clonal Hematopoiesis of Indeterminate Potential, Monoclonal Gammopathy, Non Hodgkin Lymphoma, Leukemia, Multiple Myeloma, Plasma Cell Disorder
Interventions
Monoclonal Gammopathy, Complete Blood Count with differential (CBC w/ diff), Clonal hematopoiesis (CHIP)
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
40 Years to 49 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Sep 12, 2026, 9:12 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Observational Study of Exposure to Environmental Toxicants Among Firefighters

NCT05643014
View directory record Official record
Conditions
Healthy
Interventions
Sample collection
Other
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Sep 12, 2026, 9:12 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

The Impact of Self-assessment on Hydration

NCT06954909
View directory record Official record
Conditions
Hydration Status
Interventions
Hydration education and self-assessment
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 65 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Sep 12, 2026, 9:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Fire Fighter Fatigue Management Program: Operation Fight Fatigue

NCT01672502
View directory record Official record
Conditions
Shift-Work Sleep Disorder, Insomnia, Restless Leg Syndrome, Obstructive Sleep Apnea, Impaired Driving
Interventions
Sleep health education provided via a web-based program, Sleep disorder detection and treatment, Optimization of Sleep in Fire Station
Behavioral · Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
620 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 16, 2016 · Synced Sep 12, 2026, 9:12 AM EDT
Recruiting Phase 1Phase 2 Interventional

Examining a Novel Gastrointestinal Intervention to Negate Environmental Toxicants (ENGINE)

NCT07226440
View directory record Official record
Conditions
Toxicant Exposure, Firefighter, Occupational Exposure to Chemicals
Interventions
Colesevelam, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older · Male only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Sep 12, 2026, 9:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Enhanced Firefighter Rehab Trial: The Role of Aspirin in Preventing Heat Stress Induced Platelet Activation

NCT01066923
View directory record Official record
Conditions
Heat Stress Disorders
Interventions
Daily aspirin (ASA), Active cooling, Acute aspirin (ASA), Passive cooling, Daily placebo, Acute placebo
Drug · Other
Lead sponsor
Dave Hostler
Other
Eligibility
18 Years to 49 Years
Enrollment
124 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 12, 2017 · Synced Sep 12, 2026, 9:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Fire Fighter Fatigue Management Program: Operation Healthy Sleep

NCT01988129
View directory record Official record
Conditions
Shift-Work Sleep Disorder, Insomnia, Restless Leg Syndrome, Obstructive Sleep Apnea, Impaired Driving, Injuries
Interventions
Sleep disorders education and screening
Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
1,189 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 15, 2017 · Synced Sep 12, 2026, 9:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Healthy Heroes Study

NCT03533023
View directory record Official record
Conditions
Shift Workers' Health, Time Restricted Eating, Fasting
Interventions
Time Restricted Eating + Standard of Care, Standard of Care
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 65 Years
Enrollment
153 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Aug 3, 2021 · Synced Sep 12, 2026, 9:12 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Will Hydroxychloroquine Impede or Prevent COVID-19

NCT04341441
View directory record Official record
Conditions
COVID-19, Coronavirus, Coronavirus Infections, SARS-CoV 2
Interventions
Hydroxychloroquine - Daily Dosing, Hydroxychloroquine - Weekly Dosing, Placebo oral tablet, Monitoring Visit - Baseline, Monitoring Visit - Week 4, Monitoring Visit - Week 8, Weekly Assessment
Drug · Other · Diagnostic Test
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years to 75 Years
Enrollment
624 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 20, 2022 · Synced Sep 12, 2026, 9:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Rapid Heat Stress on Firefighters Musculoskeletal Injury Risk

NCT06442956
View directory record Official record
Conditions
Occupational Injuries, Heat Stress, Leg Injury, Back Injuries
Interventions
Rapid Heat Condition, Gradual Heat Condition
Other
Lead sponsor
Louisiana State University Health Sciences Center Shreveport
Other
Eligibility
18 Years to 57 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Shreveport, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 29, 2026 · Synced Sep 12, 2026, 9:12 AM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

Evaluation of Broccoli Seed and Sprout Extract for Detoxification of Carcinogens in Firefighters

NCT06009926
View directory record Official record
Conditions
Hematopoietic and Lymphatic System Neoplasm, Malignant Solid Neoplasm, Occupational Malignant Neoplasm
Interventions
Acetaminophen, Biospecimen Collection, Broccoli Sprout/Broccoli Seed Extract Supplement, Placebo Administration, Questionnaire Administration, Training
Drug · Procedure · Dietary Supplement + 1 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 12, 2026, 9:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Sequencing on Outcome Measures

NCT06445491
View directory record Official record
Conditions
Muscle Weakness
Interventions
Control order, Randomized sequence
Other
Lead sponsor
Louisiana State University Health Sciences Center Shreveport
Other
Eligibility
18 Years to 57 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Shreveport, Louisiana
Source: ClinicalTrials.gov public record
Updated Dec 12, 2024 · Synced Sep 12, 2026, 9:12 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Behavior and Risk Awareness Through Video Education for Firefighters

NCT07494617
View directory record Official record
Conditions
Cancer Prevention, Firefighters
Interventions
Video 1, Video 2, Video 3, Video 4, Video 5
Other
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced Sep 12, 2026, 9:12 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Influence of a Corrective Exercise Training Program on Measures of Functional Movement Among Active-Duty Firefighters

NCT02672735
View directory record Official record
Conditions
Functional Movement Quality
Interventions
Corrective Exercise Programming
Other
Lead sponsor
University of Wisconsin, Milwaukee
Other
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 14, 2016 · Synced Sep 12, 2026, 9:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Pilot Study of Cognitive Behavioral Therapy - Insomnia (CBT-I) Among Professional Firefighters

NCT05087121
View directory record Official record
Conditions
Insomnia, Shift-Work Related Sleep Disturbance
Interventions
Cognitive Behavioral Therapy for Insomnia for Firefighters (CBT-I-F), Fitbit Inspire HR Wrist Worn Device (NCT04176926)
Behavioral · Device
Lead sponsor
Pacific University
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Forest Grove, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 30, 2022 · Synced Sep 12, 2026, 9:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Feasibility of a Train-the-Trainer Delivered Exercise Intervention in Firefighters

NCT05287594
View directory record Official record
Conditions
Firefighter, High Intensity Interval Training
Interventions
Integrated Exercise Program
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 60 Years
Enrollment
55 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 Dec 18, 2025 · Synced Sep 12, 2026, 9:12 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Multi-Cancer Early Detection (MCED) of Firefighters

NCT05780957
View directory record Official record
Conditions
Cancer
Interventions
MCED
Other
Lead sponsor
Vincere Cancer Center
Other
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2030
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced Sep 12, 2026, 9:12 AM EDT