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

Non-invasive Brain Stimulation and Injury Risk Biomechanics

NCT06093295
View directory record Official record
Conditions
Concussion, Mild
Interventions
Repetitive Transcranial Magnetic Stimulation (Theta Burst Stimulation)
Device
Lead sponsor
University of Georgia
Other
Eligibility
18 Years to 35 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 8, 2025 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Exercise-Induced Rates of Fat Oxidation with and Without Ingestion of a Caffeine-Based Energy Drink

NCT06308731
View directory record Official record
Conditions
Substrate Oxidation, Energy Expenditure, Reaction Time, Cognition, Exercise Performance
Interventions
Caffeine-Based Energy Drink, Placebo
Dietary Supplement · Other
Lead sponsor
Lindenwood University
Other
Eligibility
18 Years to 50 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 16, 2024 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of a Double-Blind, Single Dose of PER977 Administered Alone, and Following a Single Dose of Edoxaban

NCT01826266
View directory record Official record
Conditions
Anticoagulant Reversal, Reversal of Edoxaban Induced Anticoagulation
Interventions
PER977, Placebo
Drug
Lead sponsor
Perosphere Pharmaceuticals Inc, a wholly owned subsidiary of AMAG Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 45 Years
Enrollment
83 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 27, 2020 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study to Examine the Effects of ATP Supplementation on Muscle Excitability and Reaction Time During and Following a Repeated Sprint Bout

NCT02093611
View directory record Official record
Conditions
Muscle Fatigue Caused by Repetitive Muscle Exercise
Interventions
Placebo, ATP
Dietary Supplement
Lead sponsor
Metabolic Technologies Inc.
Industry
Eligibility
18 Years to 30 Years · Male only
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Sep 27, 2015 · Synced Jul 21, 2026, 7:29 PM EDT
Withdrawn No phase listed Observational

Adenovirus and Fungal Load in Pediatric Stem Cell Transplant Patients

NCT00448994
View directory record Official record
Conditions
Adenovirus, Other Mycoses
Interventions
Not listed
Lead sponsor
Steven B. Kleiboeker
Industry
Eligibility
2 Years to 17 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
2
States / cities
Kansas City, Missouri • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Dec 8, 2014 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

The Impact and Detection of Driving Impairments Associated With Acute Cannabis Smoking

NCT02849587
View directory record Official record
Conditions
Cannabis Intoxication
Interventions
Cannabis
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 55 Years
Enrollment
199 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 3, 2022 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Not applicable Interventional Results available

Assessment of Chiropractic Treatment Using Reaction and Response Times in Members of the Special Operation Forces (ACT2)

NCT02168153
View directory record Official record
Conditions
Physiological Measurements of Response and Reaction Times
Interventions
Chiropractic Manipulative Therapy, Wait-list
Other
Lead sponsor
RAND
Other
Eligibility
20 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Fort Campbell North, Kentucky
Source: ClinicalTrials.gov public record
Updated Apr 18, 2019 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Acute and Residual Effects of Caffeinated Beer

NCT00515294
View directory record Official record
Conditions
Neurobehavioral Manifestations, Drug Related Sleep Disturbance, Alcohol Intoxication
Interventions
Caffeinated Alcoholic Beer, Non-Caffeinated Alcoholic Beer, Caffeinated Non-Alcoholic Beer, Non-Caffeinated, Non-Alcoholic Beer
Drug · Other
Lead sponsor
Boston University
Other
Eligibility
21 Years to 30 Years
Enrollment
154 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 27, 2017 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Influence of Spinal Manipulative Therapy Upon Stroop Task Performance

NCT00335426
View directory record Official record
Conditions
Motor Response Time
Interventions
Spinal manipulative therapy
Procedure
Lead sponsor
Logan College of Chiropractic
Other
Eligibility
18 Years to 35 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Chesterfield, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 31, 2009 · Synced Jul 21, 2026, 7:29 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Assessment of Oculomotor, Vestibular and Reaction Time Response Following a Concussive Event

NCT01832714
View directory record Official record
Conditions
Concussion, Mild, Concussion, Intermediate, Concussion, Severe
Interventions
Not listed
Lead sponsor
Neurolign
Industry
Eligibility
19 Years to 45 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
2
States / cities
San Diego, California • Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jul 18, 2019 · Synced Jul 21, 2026, 7:29 PM EDT
Not yet recruiting Not applicable Interventional

Acute Effect of Capsimax on Resistance Exercise Performance, Muscle Oxygenation, Nitric Oxide Release, Resting Energy Expenditure and Reaction Time

NCT06612658
View directory record Official record
Conditions
None Volunteer
Interventions
A novel, proprietary encapsulated form of Capsicum extract in beadlet form standardized to 2% capsaicinoids
Dietary Supplement
Lead sponsor
Hofstra University
Other
Eligibility
18 Years to 35 Years · Male only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Hempstead, New York
Source: ClinicalTrials.gov public record
Updated Sep 24, 2024 · Synced Jul 21, 2026, 7:29 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Vagus Nerve Stimulation for Reaction Time

NCT07528742
View directory record Official record
Conditions
Healthy Subjects (HS)
Interventions
vagus nerve stimulation
Device
Lead sponsor
Youngstown State University
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Youngstown, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Jul 21, 2026, 7:29 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Caffeine on Chess Performance and Cognitive Function in Professional Chess Players

NCT07641335
View directory record Official record
Conditions
Cognitive Performance, Attention, Reaction Time, Caffeine
Interventions
Caffeinated Coffee, Decaffeinated Coffee Placebo
Dietary Supplement
Lead sponsor
St. Louis University
Other
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of A-GPC on Reaction Time and Cognitive Function

NCT03903250
View directory record Official record
Conditions
Cognitive Change, Reaction Time
Interventions
A-GPC, Sugar
Dietary Supplement
Lead sponsor
University of Mary Hardin-Baylor
Other
Eligibility
18 Years to 35 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Belton, Texas
Source: ClinicalTrials.gov public record
Updated Nov 11, 2020 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of PeakATP on Mood, Reaction Time and Cognition

NCT05100589
View directory record Official record
Conditions
Cognitive Change, Mood
Interventions
PeakATP, Placebo
Dietary Supplement
Lead sponsor
University of Central Florida
Other
Eligibility
18 Years to 40 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Aug 7, 2022 · Synced Jul 21, 2026, 7:29 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Brain Function in Primary Lateral Sclerosis

NCT00071435
View directory record Official record
Conditions
Motor Neuron Disease
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2006
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jul 21, 2026, 7:29 PM EDT
Completed No phase listed Observational

Assessment of Attentional Functioning in Children With HIV-1 Infection

NCT00001497
View directory record Official record
Conditions
Attention Deficit Disorder With Hyperactivity, HIV Infections, Paralysis
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Not listed
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1995 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Inspiratory Muscle Training in Postmenopausal Women

NCT06459674
View directory record Official record
Conditions
Postmenopausal Symptoms, Aging, Obesity
Interventions
PrO2 Fit (IMT Trainer)
Device
Lead sponsor
Indiana University
Other
Eligibility
50 Years to 75 Years · Female only
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Bloomington, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Randomized Study to Examine the Ability of a Caffeine-Based Energy Drink to Impact Energy Expenditure, Fat Oxidation, Reaction Time, and Other Perceptual Indicators

NCT05998096
View directory record Official record
Conditions
Energy Expenditure, Cognition, Reaction Time
Interventions
Caffeine-Based Energy Drink, Placebo
Dietary Supplement
Lead sponsor
Lindenwood University
Other
Eligibility
18 Years to 50 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 10, 2024 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Not applicable Interventional Results available

Clinical Utility of a PCR Compared to Culture and Sensitivity Testing for the Management of cUTI in Adults.

NCT06996301
View directory record Official record
Conditions
Urinary Tract Infection Complicated, Urinary Tract Infection (cUTI), Urinary Tract Infection (Diagnosis)
Interventions
Treatment guided by the PCR results, Treatment guided by the C&S results
Diagnostic Test
Lead sponsor
Doc Lab Inc
Industry
Eligibility
18 Years and older
Enrollment
773 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
6
States / cities
San Jose, California • Albany, Georgia • Evans, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 10, 2025 · Synced Jul 21, 2026, 7:29 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

A Study to Investigate if Long Acting Cabotegravir (CAB) and Lenacapavir (LEN) Injections Are Tolerable and Acceptable When Administered to Healthy Adults Without HIV

NCT06970223
View directory record Official record
Conditions
HIV Infections
Interventions
Cabotegravir long-acting, Lenacapavir long-acting
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Long Beach, California
Source: ClinicalTrials.gov public record
Updated Nov 27, 2025 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nutrition21 Study 1

NCT04828278
View directory record Official record
Conditions
Nutritional Supplementation
Interventions
Arginine, Placebo
Dietary Supplement
Lead sponsor
Texas A&M University
Other
Eligibility
18 Years to 40 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Apr 9, 2025 · Synced Jul 21, 2026, 7:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Consumption of 4D Dietary Supplement on Perceptual-Cognitive and Visual-Motor Performance

NCT04988919
View directory record Official record
Conditions
Dietary Supplementation
Interventions
4D, placebo
Dietary Supplement
Lead sponsor
University of Central Florida
Other
Eligibility
18 Years to 40 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Oct 7, 2021 · Synced Jul 21, 2026, 7:29 PM EDT
Completed No phase listed Observational

Investigating Reaction Time Among Children Who Snore

NCT02053012
View directory record Official record
Conditions
Snoring
Interventions
PVT-192
Device
Lead sponsor
Vidya Raman
Other
Eligibility
6 Years to 18 Years
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 9, 2018 · Synced Jul 21, 2026, 7:29 PM EDT