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Showing 1–24 of 105 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Healthy Young Adults Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Noninvasive Vagus Nerve Stimulation (VNS) for Neuromotor Adaptations

NCT03628976
View directory record Official record
Conditions
Healthy Young Adults
Interventions
tVNS, Motor training
Other
Lead sponsor
Georgia Institute of Technology
Other
Eligibility
18 Years to 39 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 28, 2022 · Synced Jun 26, 2026, 7:21 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Vaccination Responses in Young and Older Adults

NCT02654704
View directory record Official record
Conditions
Individuality, Healthy, Asthma, Immune System and Related Disorders
Interventions
Pneumococcal Vaccination
Biological
Lead sponsor
Michigan State University
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
1
States / cities
East Lansing, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 28, 2020 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Human Papillomavirus Vaccine Immunogenicity and Safety Trial in Young Adult Women With GSK Biologicals Novel HPV Vaccine

NCT00359619
View directory record Official record
Conditions
Infections, Papillomavirus, Papillomavirus Vaccines
Interventions
CervarixTM, HPV investigational vaccine GSK568893A, different formulations
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 25 Years · Female only
Enrollment
383 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
4
States / cities
Denver, Colorado • Golden, Colorado • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 1, 2020 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Young Adult Influenza Vaccine Immunogenicity Substudy

NCT00170508
View directory record Official record
Conditions
Influenza
Interventions
Fluzone®
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 22, 2013 · Synced Jun 26, 2026, 7:21 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Empowering Young Parents: Building Healthy Relationships Study

NCT06576193
View directory record Official record
Conditions
Gender-based Violence, Intimate Partner Violence
Interventions
Safe Dates for Young Parents (SDYP)
Behavioral
Lead sponsor
RTI International
Other
Eligibility
14 Years to 21 Years · Female only
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
12
States / cities
Camden, Delaware • Georgetown, Delaware • Washington D.C., District of Columbia + 9 more
Source: ClinicalTrials.gov public record
Updated Oct 29, 2025 · Synced Jun 26, 2026, 7:21 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Food Frequency Questionnaires in Estimating Food Nutrient Intake in Healthy Young Adults

NCT02610023
View directory record Official record
Conditions
Healthy Subject
Interventions
Questionnaire Administration, Laboratory Biomarker Analysis, Spectroscopy
Other · Device
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
20 Years to 50 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Effect of Number of Remote Limb Ischemic Conditioning Cycles on Learning Enhancement

NCT03512041
View directory record Official record
Conditions
Healthy, Young Adults
Interventions
RLIC - 5 cycles, RLIC - 4 Cycles, RLIC - 3 Cycles, Sham conditioning, Balance training, Arm training, Sequence production training
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 40 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 25, 2019 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Reward and Drug Effects on Mood and Brain Response

NCT04512365
View directory record Official record
Conditions
Cannabis Use, Healthy
Interventions
Placebo oral capsule, THC
Drug
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 25 Years
Enrollment
141 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 20, 2025 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Post-Exercise Cardiovascular Responses Following Energy Drink Consumption

NCT03418077
View directory record Official record
Conditions
QTc Interval
Interventions
Energy Drink, Placebo-control
Dietary Supplement
Lead sponsor
David Grant U.S. Air Force Medical Center
Federal
Eligibility
18 Years to 40 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Travis Air Force Base, California
Source: ClinicalTrials.gov public record
Updated Apr 16, 2020 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Remote Limb Ischemic Conditioning to Enhance Learning and Muscle Strength in Healthy Young Adults

NCT03512028
View directory record Official record
Conditions
Healthy, Young Adults
Interventions
RLIC, Sham conditioning, Muscle strength training, Driving training, Balance training
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 40 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Jun 26, 2026, 7:21 AM EDT
Terminated Phase 1 Interventional Results available

A Phase I Study of Quadrivalent Human Papilloma Virus (HPV) (Types 6, 11, 16, 18) Recombinant Vaccine in HIV-Infected and HIV-Negative Pre-Adolescents, Adolescents, and Young Adults

NCT00798265
View directory record Official record
Conditions
Human Immunodeficiency Virus, Human Papillomavirus- 6, 11, 16, 18, Adolescent, Papillomavirus Vaccines
Interventions
Gardasil, Survey
Biological · Behavioral
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
12 Years to 26 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 19, 2024 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Writing Activities and Emotions

NCT04539756
View directory record Official record
Conditions
Healthy
Interventions
positive psychological intervention, Active control condition
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 1, 2021 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A/H5N1 Virus-Like Particle Antigen Dose Ranging Study With Adjuvant 1

NCT01594320
View directory record Official record
Conditions
Influenza (Pandemic)
Interventions
Monovalent Avian Influenza VLP (H5N1), Monovalent Avian Influenza VLP (H5N1); Adjuvant, Saline placebo
Biological
Lead sponsor
Novavax
Industry
Eligibility
18 Years to 49 Years
Enrollment
333 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
5
States / cities
Anaheim, California • Miami, Florida • Pembroke Pines, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2014 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Human Papilloma Virus Vaccine Immunogenicity and Safety Trial in Young Adult Women With GSK Bio's Novel HPV Vaccine.

NCT00231413
View directory record Official record
Conditions
Infections, Papillomavirus
Interventions
HPV 16/18 L1 AS04, HPV-16/18/31/45 L1 AS04 Formulation 1, HPV-16/18/31/45 L1 AS04 Formulation 2, HPV-16/18/31/45 L1 AS04 Formulation 3, HPV-16/18/31/45 L1 AS04 Formulation 4, HPV-16/18/31/45 L1 AS04 Formulation 5, HPV-16/18/31/45 L1 AS04 Formulation 6
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 25 Years · Female only
Enrollment
383 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
5
States / cities
Aurora, Colorado • Golden, Colorado • Kingston, Rhode Island + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 11, 2019 · Synced Jun 26, 2026, 7:21 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Support Your Heart, Phase 1

NCT07623733
View directory record Official record
Conditions
Cardio Vascular Disease, Obesity & Overweight, Physical Activity, Sleep, Diet, Healthy, Nicotine
Interventions
Support Your Heart
Behavioral
Lead sponsor
George Washington University
Other
Eligibility
18 Years to 39 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Jun 26, 2026, 7:21 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Recognition of Second Language Spoken Words, Signs, and Characters Via Perception and Production in Adults

NCT05587218
View directory record Official record
Conditions
Second Language Acquisition in Healthy Young Adults
Interventions
Self-production
Behavioral
Lead sponsor
University of Alabama, Tuscaloosa
Other
Eligibility
18 Years to 35 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Tuscaloosa, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 19, 2022 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Kettlebell Swings & Low Back Pressure Pain Threshold

NCT03696615
View directory record Official record
Conditions
Low Back Pain
Interventions
Tabata Kettlebell Swing Workout, Control
Other
Lead sponsor
University of Central Florida
Other
Eligibility
18 Years to 45 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Oct 3, 2018 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluation of Bacillus Subtilis R0179 in Healthy Young Adults

NCT01802151
View directory record Official record
Conditions
Healthy
Interventions
B. subtilis R0179, Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 50 Years
Enrollment
83 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 16, 2015 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

QA102 Phase 1 Study in Healthy Young and Older Adult Subjects

NCT04894071
View directory record Official record
Conditions
Age-related Macular Degeneration
Interventions
QA102, Placebo
Drug
Lead sponsor
Smilebiotek Zhuhai Limited
Industry
Eligibility
18 Years to 75 Years
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 13, 2022 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cortical Activation and Cognitive-Motor Learning

NCT04666181
View directory record Official record
Conditions
Dual-task, Healthy Adults
Interventions
Dual-task training
Behavioral
Lead sponsor
East Carolina University
Other
Eligibility
18 Years to 40 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Greenville, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 18, 2022 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Staying Healthy With Follow-up Care: A Mobile Chatbot Feasibility Study for AYA Cancer Survivors

NCT05863702
View directory record Official record
Conditions
Survivorship
Interventions
Penny
Behavioral
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years and older
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Jun 26, 2026, 7:21 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Exercise and Heat Stress on Acute Cardiometabolic Adaptations in Healthy Young Adults

NCT06872762
View directory record Official record
Conditions
Exercise, Heat Strain, Control Condition
Interventions
Exercise, Heat strain
Behavioral
Lead sponsor
Northern Arizona University
Other
Eligibility
18 Years to 50 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Flagstaff, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 11, 2025 · Synced Jun 26, 2026, 7:21 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Pulmonary and Inflammatory Responses Following Exposure to a Low Concentration of Ozone or Clean Air at Rest

NCT06943989
View directory record Official record
Conditions
Lung Inflammation, Experimental Lung Inflammation
Interventions
Ozone Exposure, Clean air (0.0 ppm ozone)
Other
Lead sponsor
Environmental Protection Agency (EPA)
Federal
Eligibility
18 Years to 35 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 26, 2025 · Synced Jun 26, 2026, 7:21 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study to Assess the Effect of Ofatumumab in Treatment Naïve, Very Early RRMS Patients Benchmarked Against Healthy Controls.

NCT05084638
View directory record Official record
Conditions
Relapse Remitting Multiple Sclerosis
Interventions
Ofatumumab
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 35 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
35
States / cities
Chandler, Arizona • Phoenix, Arizona • Los Angeles, California + 31 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Jun 26, 2026, 7:21 AM EDT