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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 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 5, 2026 · Synced Jul 23, 2026, 1:30 AM 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 Jul 23, 2026, 1:30 AM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

Electrical Inhibition of Human Preterm Contractions

NCT02983240
View directory record Official record
Conditions
Preterm Labor, PreTerm Birth, Preterm Labor With Delivery Nos
Interventions
Electrical Uterine Pacemaker
Device
Lead sponsor
e-Bio Corp
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 3, 2024 · Synced Jul 23, 2026, 1:30 AM 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 17, 2018 · Synced Jul 23, 2026, 1:30 AM 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 Jul 23, 2026, 1:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of a Novel Stretching Technique on Shoulder Range of Motion and Voluntary Contraction in Overhead Athletes With Glenohumeral Internal Rotation Deficits "GIRD"

NCT03044236
View directory record Official record
Conditions
Glenohumeral Internal Rotation Deficits
Interventions
Stretching
Procedure
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years to 45 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Jun 10, 2019 · Synced Jul 23, 2026, 1:30 AM 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 Jul 23, 2026, 1:30 AM 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 7, 2017 · Synced Jul 23, 2026, 1:30 AM EDT
Completed Phase 4 Interventional Results available

DOACs for Stroke Prevention Post Ventricular Tachycardia Ablation

NCT02666742
View directory record Official record
Conditions
Ventricular Tachycardia, Premature Ventricular Contraction, Stroke
Interventions
DOAC, Aspirin
Drug
Lead sponsor
Kansas City Heart Rhythm Institute
Other
Eligibility
18 Years to 80 Years
Enrollment
246 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
4
States / cities
Kansas City, Kansas • Overland Park, Kansas • The Bronx, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2022 · Synced Jul 23, 2026, 1:30 AM EDT
Terminated No phase listed Observational

Examining Developmental Changes in Heart Contractions of Children With Congenital Heart Defects

NCT00860327
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome, Tetralogy of Fallot
Interventions
Not listed
Lead sponsor
Emory University
Other
Eligibility
1 Day to 1 Year
Enrollment
375 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2016
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 21, 2016 · Synced Jul 23, 2026, 1:30 AM EDT
Completed No phase listed Observational

Screening To Obviate Preterm Birth

NCT01868308
View directory record Official record
Conditions
Preterm Labor, Preterm Contractions, Abdominal Cramping, Back Pain, Vaginal Pressure, Vaginal Bleeding
Interventions
Not listed
Lead sponsor
University of Pennsylvania
Other
Eligibility
Female only
Enrollment
589 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 29, 2017 · Synced Jul 23, 2026, 1:30 AM EDT
Completed Not applicable Interventional

VIVO™ Accuracy Study

NCT03340142
View directory record Official record
Conditions
Premature Ventricular Contraction, Ventricular Tachycardia
Interventions
VIVO™
Device
Lead sponsor
Catheter Precision. Inc.
Industry
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
3
States / cities
Iowa City, Iowa • Baltimore, Maryland • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 14, 2018 · Synced Jul 23, 2026, 1:30 AM 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 Jul 23, 2026, 1:30 AM 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 3, 2025 · Synced Jul 23, 2026, 1:30 AM 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 Apr 30, 2018 · Synced Jul 23, 2026, 1:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Safety and Efficacy of the MyokinE100 (CL-EMS Alpha) Device in Inducing Visible Muscle Contraction in Healthy Volunteers

NCT06023511
View directory record Official record
Conditions
ICU Acquired Weakness
Interventions
Electrical muscle stimulation
Device
Lead sponsor
Health Discovery Labs
Industry
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Sep 25, 2023 · Synced Jul 23, 2026, 1:30 AM 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 23, 2015 · Synced Jul 23, 2026, 1:30 AM 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 17, 2021 · Synced Jul 23, 2026, 1:30 AM 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 25, 2016 · Synced Jul 23, 2026, 1:30 AM 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 Jul 23, 2026, 1:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Accuracy and Reliability of Fetal Heart Rate and Uterine Contraction Monitoring Method

NCT01280357
View directory record Official record
Conditions
Pregnancy; Habitual Aborter, Weeks of Gestation 37 or More
Interventions
Monica AN24 (K101081), Philips 50XM
Device
Lead sponsor
Monica Healthcare Ltd
Industry
Eligibility
15 Years to 40 Years · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
2
States / cities
New York, New York • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 20, 2013 · Synced Jul 23, 2026, 1:30 AM 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 Jul 23, 2026, 1:30 AM EDT
Completed No phase listed Observational Results available

EnSite Precision Observational Study

NCT03260244
View directory record Official record
Conditions
Cardiac Arrhythmia
Interventions
cardiac mapping and radiofrequency ablation procedure
Procedure
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,065 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
7
States / cities
Birmingham, Alabama • Jonesboro, Arkansas • Little Rock, Arkansas + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 7, 2024 · Synced Jul 23, 2026, 1:30 AM 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 11, 2011 · Synced Jul 23, 2026, 1:30 AM EDT