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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Contraction Clear all
Recruiting No phase listed Observational

Defining the Risk of Ventricular Tachycardia in Genetic Cardiomyopathies

NCT06575881
View directory record Official record
Conditions
Atrial Fibrillation, Ventricular Tachycardia, Premature Ventricular Contraction
Interventions
Not listed
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Sep 10, 2026, 7:42 PM EDT
Completed No phase listed Observational

Multi-Reader Multi-Case Study to Identify Uterine Contractions Recorded From Laboring and Nonlaboring Patients by Practicing Clinicians

NCT01730963
View directory record Official record
Conditions
Pregnancy
Interventions
Not listed
Lead sponsor
Reproductive Research Technologies, LP
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
5
States / cities
Phoenix, Arizona • Philadelphia, Pennsylvania • Beaumont, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 21, 2012 · Synced Sep 10, 2026, 7:42 PM EDT
Completed Not applicable Interventional

Evaluating the Impact of Focused Muscle Contraction Therapy in Retire APF Players

NCT04822311
View directory record Official record
Conditions
Chronic Pain Due to Injury, Acute Pain, Depression, Brain Injuries
Interventions
Experimental: Investigate the effects of an exercise intervention on retired APF players
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older · Male only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 8, 2023 · Synced Sep 10, 2026, 7:42 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Uterine Contractions Under Blue Light

NCT03691740
View directory record Official record
Conditions
Preterm Contractions
Interventions
Ocular light
Device
Lead sponsor
University of South Florida
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Oct 1, 2018 · Synced Sep 10, 2026, 7:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Cueing on Gluteus Maximus Recruitment

NCT02645188
View directory record Official record
Conditions
Muscle Contraction
Interventions
Cueing
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 13, 2016 · Synced Sep 10, 2026, 7:42 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Treatment of Forehead/Glabellar Rhytide Complex With Botulinum Toxin A Injection

NCT01688076
View directory record Official record
Conditions
Forehead Rhytid Complex, Glabellar Rhytid Complex
Interventions
Botulinum Toxin A
Procedure
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Sep 10, 2026, 7:42 PM EDT
Active, not recruiting Not applicable Interventional

Task Practice and Spinal Cord Stimulation

NCT06494020
View directory record Official record
Conditions
Spinal Cord Injury Cervical, Spastic
Interventions
Task Practice combined with Transcutaneous Spinal Cord Stimulation( TcSCS)
Other
Lead sponsor
University of Miami
Other
Eligibility
22 Years to 70 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
2
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 10, 2026, 7:42 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Magnesium Supplementation for the Prevention of Supraventricular Arrhythmias

NCT02837328
View directory record Official record
Conditions
Premature Atrial Contraction
Interventions
Oral Magnesium Supplement, Placebo
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
55 Years and older
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 31, 2019 · Synced Sep 10, 2026, 7:42 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Acute Cryotherapy on Musculoskeletal Function and Biomarkers

NCT07211412
View directory record Official record
Conditions
Exercise Induced Muscle Damage, Cryotherapy
Interventions
Cryotherapy, Eccentric exercise-induced muscle damage
Other
Lead sponsor
University of Texas, El Paso
Other
Eligibility
18 Years to 30 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Sep 10, 2026, 7:42 PM EDT
Completed Not applicable Interventional

Sustained Auricular Nerve Stimulation for PVC Suppression

NCT07093034
View directory record Official record
Conditions
Premature Ventricular Complexes, PVC - Premature Ventricular Contraction, Auricular Vagus Nerve Stimulation
Interventions
Extended nocturnal use of auricular vagus nerve stimulator device
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Sep 10, 2026, 7:42 PM EDT
Recruiting No phase listed Observational

Role of Novel ILR in the Management of PVCs

NCT06060548
View directory record Official record
Conditions
PVC - Premature Ventricular Contraction, Myocarditis
Interventions
Monitoring of patients presenting with PVCs
Other
Lead sponsor
Kansas City Heart Rhythm Research Foundation
Other
Eligibility
18 Years and older
Enrollment
50 participants
Timeline
2022 – 2025
U.S. locations
6
States / cities
Overland Park, Kansas • Independence, Missouri • Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 27, 2025 · Synced Sep 10, 2026, 7:42 PM EDT
Enrolling by invitation Not applicable Interventional

Treatment of Focal Ventricular Tachycardias Using a Pulsed Field Ablation From a Point Ablation Catheter Short Title FOCUS-PFA

NCT06747013
View directory record Official record
Conditions
Focal Ventricular Arrhythmias, Premature Ventricular Contractions, Ventricular Tachycardias
Interventions
Point Ablation Catheter
Device
Lead sponsor
Vivek Reddy
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Sep 10, 2026, 7:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Transseptal vs Retrograde Aortic Ventricular Entry to Reduce Systemic Emboli

NCT03946072
View directory record Official record
Conditions
Neurocognitive Dysfunction
Interventions
Transseptal Aortic Approach Catheter Ablation Procedure, Retrograde Aortic Approach Catheter Ablation Procedure
Procedure
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
153 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
20
States / cities
Phoenix, Arizona • Los Angeles, California • Palo Alto, California + 14 more
Source: ClinicalTrials.gov public record
Updated Dec 25, 2023 · Synced Sep 10, 2026, 7:42 PM EDT
Withdrawn Early Phase 1 Interventional Accepts healthy volunteers

Intravenous Versus Intramuscular Administration of Methylergonovine for Uterine Contraction in Cesarean Sections

NCT03303235
View directory record Official record
Conditions
Uterine Atony, Uterine Tone Disorders, Postpartum Hemorrhage
Interventions
Methylergonovine
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 2, 2020 · Synced Sep 10, 2026, 7:42 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Influence of Fast and Slow Imagined Muscle Contractions on Muscle Function or Central Nervous System Properties

NCT06627491
View directory record Official record
Conditions
Healthy
Interventions
Imagined muscle contractions
Behavioral
Lead sponsor
Kennesaw State University
Other
Eligibility
18 Years to 30 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Kennesaw, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 8, 2024 · Synced Sep 10, 2026, 7:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The MARY-JANE Cannabis and Heart Rhythm Trial

NCT06021613
View directory record Official record
Conditions
Premature Atrial Contractions, Premature Ventricular Contractions
Interventions
Randomized instructions
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years and older
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Sep 10, 2026, 7:42 PM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

Electrical Inhibition (EI): A Preliminary Study To Inhibit Preterm Labor And Preterm Birth

NCT02569216
View directory record Official record
Conditions
Premature Birth, Premature Labor
Interventions
Electrical Inhibition (EI)
Device
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 55 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Manhattan, New York
Source: ClinicalTrials.gov public record
Updated Nov 8, 2017 · Synced Sep 10, 2026, 7:42 PM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

Evaluation of Muscle Oxygen With MRI

NCT07638384
View directory record Official record
Conditions
Muscle Oxygenation
Interventions
Compression and Contraction
Procedure
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
20 Years to 64 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 7, 2026 · Synced Sep 10, 2026, 7:42 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Calcium Carbonate to Augment Labor Contractions

NCT06580782
View directory record Official record
Conditions
Labor Dystocia, Labor Induction, Labor Augmentation
Interventions
Calcium Carbonate 500 MG, Standard Dose Synthetic Pitocin
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 22, 2025 · Synced Sep 10, 2026, 7:42 PM EDT
Not listed Phase 4 Interventional

Prospective Assessment of Premature Ventricular Contractions Suppression in Cardiomyopathy(PAPS)

NCT03228823
View directory record Official record
Conditions
Ventricular Premature Beats, Contractions, or Systoles, Cardiomyopathies
Interventions
Radiofrequency ablation, Amiodarone (Antiarrhythmic drug)
Procedure · Drug
Lead sponsor
Hunter Holmes Mcguire Veteran Affairs Medical Center
Federal
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
10
States / cities
Los Angeles, California • San Francisco, California • Tampa, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2021 · Synced Sep 10, 2026, 7:42 PM EDT
Active, not recruiting Not applicable Interventional

Calcium Carbonate on Labor Induction

NCT06352775
View directory record Official record
Conditions
Pregnancy, Uterine Contraction
Interventions
Calcium Carbonate
Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older · Female only
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 20, 2025 · Synced Sep 10, 2026, 7:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Measuring Renuvion Soft Tissue Contraction Using Ultrasound

NCT05968495
View directory record Official record
Conditions
Skin Laxity
Interventions
Renuvion APR Handpiece
Device
Lead sponsor
Apyx Medical
Industry
Eligibility
18 Years to 65 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Olympia, Washington
Source: ClinicalTrials.gov public record
Updated Feb 2, 2025 · Synced Sep 10, 2026, 7:42 PM EDT
Completed No phase listed Observational Results available

Multi-Reader Multi-Case Study to Identify Uterine Contractions Recorded From Laboring Patients by Practicing Clinicians

NCT01282723
View directory record Official record
Conditions
Pregnancy - Labor Monitoring
Interventions
Not listed
Lead sponsor
Reproductive Research Technologies, LP
Industry
Eligibility
15 Years to 40 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
3
States / cities
Phoenix, Arizona • Philadelphia, Pennsylvania • Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 14, 2011 · Synced Sep 10, 2026, 7:42 PM EDT
Completed Not applicable Interventional

Non-invasive Vagal Stimulation for Frequent Premature Ventricular Complexes

NCT05341544
View directory record Official record
Conditions
Premature Ventricular Contraction
Interventions
Parasym device, Sham device
Device
Lead sponsor
Northwell Health
Other
Eligibility
18 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
2
States / cities
New York, New York • Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Sep 10, 2026, 7:42 PM EDT