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ClinicalTrials.gov public records Last synced Oct 30, 2026, 1:38 PM EDT

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Showing 25–48 of 90 matching trials from the live ClinicalTrials.gov search.
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 6, 2026 · Synced Oct 30, 2026, 1:38 PM EDT
Withdrawn Phase 1 Interventional

Pilot Study of Electronic Uterine Contraction Inhibitor

NCT00994058
View directory record Official record
Conditions
Prematurity
Interventions
Electrical Inhibition (EI) Uterine Pacemaker
Device
Lead sponsor
Winthrop University Hospital
Other
Eligibility
18 Years to 50 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Mineola, New York
Source: ClinicalTrials.gov public record
Updated Dec 24, 2015 · Synced Oct 30, 2026, 1:38 PM EDT
Completed Not applicable Interventional

Effect of TA Contraction on Gait in Patients With Knee OA

NCT03513094
View directory record Official record
Conditions
Osteoarthritis, Knee
Interventions
Transversus Abdominis Contraction
Other
Lead sponsor
Louisiana State University Health Sciences Center Shreveport
Other
Eligibility
21 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Shreveport, Louisiana
Source: ClinicalTrials.gov public record
Updated May 1, 2018 · Synced Oct 30, 2026, 1:38 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 9, 2024 · Synced Oct 30, 2026, 1:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Pain Inhibition With Neuromuscular Electrical Stimulation

NCT05280522
View directory record Official record
Conditions
Healthy Participants
Interventions
Volitional Contractions (VOL), Neuromuscular Electrical Stimulation (NMES), Noxious Electrical Stimulation (NXES)
Other · Device
Lead sponsor
University of New England
Other
Eligibility
18 Years to 30 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Portland, Maine
Source: ClinicalTrials.gov public record
Updated Mar 15, 2022 · Synced Oct 30, 2026, 1:38 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Impact of Prophylactic Ephedrine on Fetal Heart Tracing and Uterine Tetanic Contraction After CSE

NCT05873218
View directory record Official record
Conditions
Labor
Interventions
Ephedrine, Normal Saline Placebo
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Oct 30, 2026, 1:38 PM EDT
Not yet recruiting No phase listed Observational

Myocarditis Causing Premature Ventricular Contractions:Insights From the MAVERIC Registry

NCT05158751
View directory record Official record
Conditions
Myocarditis, Premature Ventricular Contractions, Ventricular Tachycardia (VT)
Interventions
Not listed
Lead sponsor
Kansas City Heart Rhythm Research Foundation
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 4, 2025 · Synced Oct 30, 2026, 1:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Aging and the Mitochondrial Response to Exercise Training, Measured by Noninvasive 31P Magnetic Resonance Spectroscopy

NCT04799171
View directory record Official record
Conditions
Physical Activity
Interventions
Isometric Contraction Exercise - Young Adults (Age group 18-39), Isometric Contraction Exercise - Middle Age Adults (Age group 40-59), Isometric Contraction Exercise - Old Adults (Age group >60)
Other
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years and older
Enrollment
352 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Aug 22, 2025 · Synced Oct 30, 2026, 1:38 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Mental Effort and Muscle Strength

NCT00059436
View directory record Official record
Conditions
Aging, Muscle Strength
Interventions
Mental effort in muscle strengthening
Behavioral
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
65 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 1999
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 26, 2016 · Synced Oct 30, 2026, 1:38 PM EDT
Recruiting Not applicable Interventional

Disrupted Sleep and Concurrent Ectopy or Atrial Fibrillation

NCT07220525
View directory record Official record
Conditions
Obstructive Sleep Apnea, Premature Ventricular Contraction (PVC), Atrial Fibrillation (AF), Premature Atrial Contraction
Interventions
HGNS Use Randomized Instructions
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 30, 2026, 1:38 PM EDT
Completed Not applicable Interventional Results available

Effect of Lubiprostone on Small Bowel Contractions in Female Patients With Constipation Irritable Bowel Syndrome (C-IBS)

NCT01085643
View directory record Official record
Conditions
Constipation-predominant Irritable Bowel Syndrome
Interventions
Lubiprostone, Placebo
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 12, 2011 · Synced Oct 30, 2026, 1:38 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 3, 2020 · Synced Oct 30, 2026, 1:38 PM EDT
Completed Not applicable Interventional Results available

Combined Application of Electrical Stimulation and Volitional Contractions for Muscle Strengthening and Knee Pain Inhibition (Seated Study)

NCT02802878
View directory record Official record
Conditions
Knee Osteoarthritis
Interventions
Hybrid Training using Electrodes and Joint Motion Sensors, Isokinetic Training with Isokinetic Dynamometer
Device
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
40 Years to 85 Years · Female only
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated May 18, 2018 · Synced Oct 30, 2026, 1:38 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 7, 2026 · Synced Oct 30, 2026, 1:38 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate Pharmacokinetics, Pharmacodynamics and Tissue Concentrations of Epelsiban

NCT02213029
View directory record Official record
Conditions
Embryo Transfer
Interventions
Epelsiban, Placebo, Oxytocin, Ortho-Cylcen (21)® tablet
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 35 Years · Female only
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
2
States / cities
Glendale, California • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 8, 2017 · Synced Oct 30, 2026, 1:38 PM EDT
Enrolling by invitation Not applicable Interventional

Computational Cardiac Imaging Analysis to Guide Ventricular Tachycardia Ablation Procedures (AI-VT)

NCT06964152
View directory record Official record
Conditions
Ventricular Tachycardia (VT), Premature Ventricular Contraction (PVC), Ventricular Fibrillation
Interventions
Computational electrocardiography and cardiac computed tomography mapping
Diagnostic Test
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 90 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2034
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated May 9, 2025 · Synced Oct 30, 2026, 1:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Manipulation Effects on Abdominal Muscles

NCT01745939
View directory record Official record
Conditions
Low Back Pain
Interventions
Lumbar Manipulation, Sham manipulation
Other
Lead sponsor
University of Nevada, Las Vegas
Other
Eligibility
18 Years to 70 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Nov 5, 2014 · Synced Oct 30, 2026, 1:38 PM EDT
Terminated Phase 2 Interventional Results available

Premature Ventricular Contractions (PVCs) and Blood Pressure Control

NCT01833455
View directory record Official record
Conditions
Ventricular Premature Complexes, Blood Pressure
Interventions
PVC Suppression using Flecainide, No PVC Suppression using Placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 22, 2019 · Synced Oct 30, 2026, 1:38 PM EDT
Terminated Not applicable Interventional Results available

Early Elimination of Premature Ventricular Contractions in Heart Failure

NCT01757067
View directory record Official record
Conditions
Premature Ventricular Contractions, Congestive Heart Failure
Interventions
PVC ablation
Device
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
7
States / cities
Los Angeles, California • Baltimore, Maryland • Boston, Massachusetts + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 18, 2021 · Synced Oct 30, 2026, 1:38 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Defecation Patterns in Constipated Patients

NCT04903470
View directory record Official record
Conditions
Constipation by Outlet Obstruction
Interventions
Bisacodyl, Atropin
Drug
Lead sponsor
The California Medical Innovations Institute, Inc.
Other
Eligibility
21 Years to 75 Years
Enrollment
130 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
2
States / cities
San Diego, California • Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 21, 2025 · Synced Oct 30, 2026, 1:38 PM EDT
Completed No phase listed Observational

Muscle Contraction in Patients With Focal Hand Dystonia

NCT00376753
View directory record Official record
Conditions
Focal Hand Dystonia
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 30, 2026, 1:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Spinal Reflexes in Motor Skill Learning

NCT00076583
View directory record Official record
Conditions
Healthy
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 30, 2026, 1:38 PM EDT
Completed No phase listed Observational

Noninvasive Monitoring of Uterine Activity and Fetal Heart Rate

NCT05782296
View directory record Official record
Conditions
Fetal Heart Rate or Rhythm Abnormality Affecting Newborn During Labor, Uterine Contractions, Obstetric Complication
Interventions
TrueLabor
Device
Lead sponsor
OB-Tools Ltd.
Industry
Eligibility
18 Years and older · Female only
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
2
States / cities
Hoffman Estates, Illinois • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Mar 27, 2025 · Synced Oct 30, 2026, 1:38 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Study to Support Fetal Heart Rate and Uterine Contraction for Preterm Labor in Singleton and Multiple Pregnancies

NCT01360905
View directory record Official record
Conditions
Pre Term Labor, Multiple Pregnancy
Interventions
Not listed
Lead sponsor
Monica Healthcare Ltd
Industry
Eligibility
17 Years and older · Female only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 20, 2014 · Synced Oct 30, 2026, 1:38 PM EDT