Variability Clinical Trials

34 recruitingLast updated: July 25, 2026

There are 34 actively recruiting variability clinical trials across 18 countries. Studies span Not Applicable. Top locations include Chicago, Illinois, United States, Taipei, Taiwan, Parma, PR, Italy. Updated daily from ClinicalTrials.gov.


Variability Trials at a Glance

34 actively recruiting trials for variability are listed on ClinicalTrialsFinder across 6 cities in 18 countries. The largest study group is Not Applicable with 23 trials, with the heaviest enrollment activity in Chicago, Taipei, and Parma. Lead sponsors running variability studies include PepsiCo Global R&D, University Hospital, Clermont-Ferrand, and University of Parma.

Browse variability trials by phase

Treatments under study

About Variability Clinical Trials

Looking for clinical trials for Variability? There are currently 1 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new Variability trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about Variability clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 120 of 34 trials

Recruiting
Not Applicable

Vitamin B6 and Depression in Pregnant and Peri-partum Women

Heart Rate VariabilityPostpartum Depression
National Taiwan University Hospital150 enrolled1 locationNCT06445933
Recruiting

Heart Rate VAriability as a MaRker for tItrATing hIgh flOw Nasal Cannula Therapy

Respiratory FailureHigh-flow Nasal CannulaHeart Rate Variability (HRV)
University Health Network, Toronto20 enrolled1 locationNCT07518862
Recruiting
Not Applicable

Effects of Walking in Greenspace and the Built Environment in Adults With Prediabetes: A Randomized Crossover Trial

PrediabetesStress and AnxietyHeart Rate Variability (HRV)+1 more
University of Minnesota216 enrolled3 locationsNCT06365723
Recruiting
Not Applicable

JOB STRESS in OPHthalmology Physicians and Residents

StressHeart Rate Variability
University Hospital, Clermont-Ferrand30 enrolled1 locationNCT04959838
Recruiting
Not Applicable

Efficacy of Transcutaneous Auricular Vagus Nerve Stimulation on Alleviating Major Depressive Disorder in Patients With Acute Coronary Syndrome After Percutaneous Coronary Intervention:A Prospective, Double-Blind,Randomized Controlled Study

Depressive DisorderPercutaneous Coronary Intervention (PCI)Acute Coronary Syndrome (ACS)+5 more
Jing Han120 enrolled1 locationNCT07454070
Recruiting
Not Applicable

Predictive Value of Glycemic Parameters Measured With the FSL Pro iQ During ACS

Cardiovascular EventAcute Coronary SyndromeContinuous Glucose Measurement+1 more
University Hospital, Montpellier850 enrolled9 locationsNCT06014112
Recruiting

Blood Pressure Variability and Ischemic Stroke Outcome

Blood Pressure VariabilityAcute Ischemic Stroke
Yale University150 enrolled3 locationsNCT05756257
Recruiting
Not Applicable

Enjoying Affordable and Tasty Food Together

Depressive symptomatologyQuality of LifeBlood Pressure+7 more
University of Massachusetts, Lowell120 enrolled1 locationNCT07036757
Recruiting

BIS Variability and Change in Quality of Recovery After Surgery

Cholecystectomy, LaparoscopicBispectral Index Variability During General Anesthesia and Postoperative Recovery
Sakarya University126 enrolled1 locationNCT07454629
Recruiting

Heart Rate Variability and Anxiety as Predictors of Emergence Agitation After Septorhinoplasty

emergence agitationHeart Rate Variability (HRV)Septorhinoplasty
Konya City Hospital100 enrolled1 locationNCT07389135
Recruiting
Not Applicable

Impact of Training Load on the Gut miCrobiome And Its Relation to exeRcise Performance, mUscle Phenotype, and markerS of Overreaching in Healthy Men

Exercise performanceMetabolic HealthExercise+12 more
Stefan De Smet45 enrolled1 locationNCT07481578
Recruiting
Not Applicable

Restorative Neurophysiology: Backing up and Restoring the Brain (BandR)

Adults With Variability in Their Mood
University of Pittsburgh60 enrolled1 locationNCT07252011
Recruiting
Not Applicable

Where Wild Things Grow: Nature- and Activity-based Group Interventions for Neurodivergent Children and Youth

AutismTourette SyndromeADHD - Attention Deficit Disorder With Hyperactivity+3 more
Sorlandet Hospital HF240 enrolled2 locationsNCT07203469
Recruiting
Not Applicable

Inter- and Intraindividual Variability of the Acute Glucose Response to Exercise in Healthy Adults and People Living With Type 1 Diabetes: A Cross-over Replicate Trial

ExerciseHealthy ParticipantsType 1 Diabetes (T1D)+1 more
University College Dublin24 enrolled1 locationNCT07209930
Recruiting
Not Applicable

Virtual vs. Traditional CPR Training: Effects on Stress

Heart Rate Variability, Biomarker of StressStress and Anxiety
Oulu University Hospital60 enrolled1 locationNCT07147322
Recruiting
Not Applicable

Novel Mental Health Therapies to Improve Military Readiness

AnxietyHeart Rate VariabilityCognitive Behavioral Therapy+2 more
David Moss160 enrolled1 locationNCT05887713
Recruiting
Not Applicable

Auricular Vagus Stimulation and Heart Rate Variability

Vagus Nerve StimulationHeart Rate Variability
Bakulev Scientific Center of Cardiovascular Surgery600 enrolled3 locationsNCT05680337
Recruiting

Exploring the Relationship Between Heart Rate Variability (HRV), Training Load, and Endurance Performance

Heart Rate Variability
PepsiCo Global R&D200 enrolled1 locationNCT06964100
Recruiting

Mechanisms And Prognosis of Stroke-Heart Syndrome

Heart FailureStrokeMyocardial Injury+5 more
Chensheng Pan658 enrolled1 locationNCT06954103
Recruiting

Modulation of the Inflammatory Response in Bariatric Surgery

ObesityPostoperative PainInflammation+3 more
Hospital HM Nou Delfos90 enrolled1 locationNCT06915558