Clinical trials: Variability
HIV
Concentrations of Raltegravir in the Semen of HIV-Infected Men
The objective of this study is to determine if concentrations of raltegravir in semen exceed the 50% and 95% inhibitory concentrations of HIV during the dose interval.
- Trial name
- NCT01045265
- Testing
- Seminal plasma pharmacokinetics
- Where
- 2 sites in Canada
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Canadian Immunodeficiency Research Collaborative
Chronic Low Back Pain (CLBP), Chronic Neck Pain
Comparative Analysis of Heart Rate Variability in Patients with Cervical Pain, Lumbar Pain, and Healthy Controls
This is a cross-sectional study designed to evaluate potential differences in heart rate variability (HRV) indices based on the affected body region (cervical vs lumbar) in individuals with chronic pain.
- Conditions
- Chronic Low Back Pain (CLBP), Chronic Neck Pain, Heart Rate Variability, Autonomic Nervous System Dysfunction
- Trial name
- NCT06890793
- Where
- Spain
- Volunteers
- 93 people, healthy volunteers welcome
- Sponsor
- Universidad de Extremadura
Anxiety
Effects of Stress Ball Use on Heart Rate Variability, Anxiety, and Pain During Awake Hand Surgery: A Randomized Controlled Trial
Preoperative anxiety begins from the decision-making of surgery to entering the operating room and may intensify as the surgery date approaches.
- Trial name
- NCT06742814
- Testing
- stress ball
- Where
- 2 sites in Taiwan
- Volunteers
- 74 people, healthy volunteers welcome
- Sponsor
- National Taiwan University Hospital
Cardiac Autonomic Function, Hemodynamic Changes
Effects of Post-Match Foam Rolling, Static Stretching, and Passive Rest on Acute Cardiac-Autonomic, Hemodynamic, and Neuromuscular Recovery in National Wrestlers
This study looks at three common ways athletes recover after a wrestling match: foam rolling, static stretching, and resting. We want to learn which method helps the body recover better in the short time that athletes often have…
- Conditions
- Cardiac Autonomic Function, Hemodynamic Changes, Neuromuscular Adaptations, Exercise and Recovery
- Trial name
- NCT07305506
- Testing
- Foam Rolling, Static Stretching
- Where
- Turkey (Türkiye)
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Ali Kamil GÜNGÖR
Vitamin D Deficiency
The Variability of 25-hydroxyvitamin D Response From Crystalline 25-hydroxyvitamin D3
The investigators hypothesize that native vitamin D will have more variability in 25(OH)D dose response when compared to a given equipotent dose of 25-hydroxyvitamin D3.
- Trial name
- NCT01633658
- Testing
- cholecalciferol, 25(OH)D
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Creighton University
Nausea, Gastroparesis
Cereset Research For Chronic Nausea
This study will explore the use of Cereset Research for symptoms associated with refractory chronic nausea in patients with gastroparesis (GP) in a randomized, clinical trial.
- Conditions
- Nausea, Gastroparesis, Stress, Anxiety
- Trial name
- NCT05229107
- Testing
- Cereset Research
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Wake Forest University Health Sciences
T1DM, Sleep Disorders, Circadian Rhythm
Influence of Circadian Clock on Hormonal, Metabolic, Neurocognitive Markers in Adolescents With and Without Diabetes
Type 1 diabetes mellitus (T1DM), makes its appearance during childhood and youth, but management implications last till late adulthood.
- Conditions
- T1DM, Sleep Disorders, Circadian Rhythm, ADHD, Memory Impairment
- Trial name
- NCT04054934
- Testing
- Reversed Circadian Rhythm, Normal Circadian Rhythm
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Assaf-Harofeh Medical Center
Visual Perception
Studying the Effects of Natural Visual Scene Changes on Typical Adult Visual Perception
The natural visual environment is complex and rich with different stimuli and features. The visual system must constantly extract behaviorally relevant visual information from an abundance of irrelevant information in the visual…
- Trial name
- NCT05004649
- Testing
- Psychophysical task
- Where
- United States
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- University of Pennsylvania
Mental Stress
The Effect of Heart Rate Variability Biofeedback Training on Health of Intrapartum Women
In this study, the investigators examined the efficacy of heart rate variability biofeedback on physical and mental health problems in childbirth women.
- Trial name
- NCT04830111
- Testing
- heart rate variability biofeedback Application (Eureka iDestressor)
- Where
- Taiwan
- Volunteers
- 82 people, healthy volunteers welcome
- Sponsor
- National Taipei University of Nursing and Health Sciences
Diet Habits, Athlete
Legume-Enriched Mediterranean Diet and Cellular Hydration in Competitive Swimmers
This study investigates whether increasing legume consumption within a Mediterranean diet framework improves cellular hydration, autonomic regulation, and functional performance in competitive swimmers.
- Trial name
- LEGUMES-SWIM (NCT07315529)
- Testing
- Legume-enriched Mediterranean diet
- Where
- Italy
- Volunteers
- 39 people, healthy volunteers welcome
- Sponsor
- San Raffaele Telematic University
Healthy
Cranberry Flavan-3-ols Consumption and Gut Microbiota in Healthy Adults
Consumption of (poly)phenols is recognized to have beneficial effects on health. However, heterogeneous results are obtained in clinical trials due to high inter-individual variability.
- Trial name
- NCT05931237
- Testing
- Cranberry extract capsules
- Where
- Canada
- Volunteers
- 39 people, healthy volunteers welcome
- Sponsor
- Laval University
Gut Microbiome, Buffer
PRObing The Efficacy of Commercial Stage Storage Buffers and Evaluating Gut Metaproteome Variability Between Individuals
The study aims to assess the effectiveness of various commercial and non-hazardous buffers for the storage of human gut fecal samples over time.
- Conditions
- Gut Microbiome, Buffer, Methodology Study, Fecal Microbiota
- Trial name
- PROTEGI (NCT06423508)
- Where
- Austria
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- University of Vienna
Resident Wellness, Resident Burnout
Remote Physiologic Monitoring of Resident Wellness and Burnout
Resident wellness and physician burnout are under the spotlight more and more as data begins to show that there is a point of diminishing return on the number of hours in training.
- Conditions
- Resident Wellness, Resident Burnout, Sleep, Stress
- Trial name
- NCT04304703
- Testing
- WHOOP strap 3.0
- Where
- United States
- Volunteers
- 38 people, healthy volunteers welcome
- Sponsor
- Milton S. Hershey Medical Center
Cardiovascular Health During Prolonged Sitting
Effect of Chocolate Consumption Prior to Prolonged Sitting on Cardiovascular Health in Young Women
This randomized controlled crossover trial investigates the acute effects of consuming dark, milk, and white chocolate before prolonged sitting on cardiovascular health in healthy young women .
- Trial name
- CHOC-SIT (NCT07556627)
- Testing
- dark chocolate, Milk Chocolate, White Chocolate
- Where
- Saudi Arabia
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- King Saud University
Cervical Lordosis
Exploring Heart Rate Variability, EEG Pattern, and Corticomuscular Coherence After Cervical Sagittal Alignment Restoration
The goal of this Randomized clinical trial is to learn about how fixing neck curvature and head posture right away affects heart rate, brainwaves, and muscle coordination in college athletes.
- Trial name
- NCT06323746
- Testing
- Denneroll cervical traction orthodontic
- Where
- United Arab Emirates
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- University of Sharjah
Prediabetic State, Obesity
The PRE-D Trial: Effect of Dapagliflozin, Metformin and Physical Activity in Pre-diabetes
The overall objective is to compare the short-term (3 months) effectiveness of three glucose-lowering interventions (dapagliflozin, metformin and physical activity) on glucose variability, body composition, and cardiometabolic…
- Trial name
- NCT02695810
- Testing
- Dapagliflozin, Metformin, Exercise
- Where
- Denmark
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Steno Diabetes Center Copenhagen
Tai Chi Practitioner, Qigong Practitioner
The Relationship Between Cranial Near-InfraRed Oxygenation(NIRO) and Heart Rate Variability During Mental Exercise
The objective of this study is to investigate the effect of Tai Chi and Qigong practice on cranial oxyhaemoglobin level, blood pressures and autonomic nervous system responses.
- Trial name
- NCT01088113
- Where
- China
- Volunteers
- healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Sex
Baroreflex Sensitivity Response to Exercise
Males and females show distinct differences in cardiovascular function, especially during exercise. Evidence suggests that females generally have lower blood pressure due to hormonal influences that reduce blood vessel…
- Trial name
- PACE MAKERS (NCT06709560)
- Testing
- Moderate Intensity Continuous Exercise, Vigorous Intensity Continuous Exercise, Moderate Intensity Continuous Exercise Matched for Blood Pressure
- Where
- Portugal
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Egas Moniz - Cooperativa de Ensino Superior, CRL
Stress
The Impact of a Continuous Performance Task on the Stress Response
The goal of this clinical trial is to learn about the impact of taking a continuous performance attention test on the physiological stress response in college students.
- Trial name
- NCT06098352
- Testing
- PEBL Continuous Performance Task
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Redlands
Marfan Syndrome
Clinical Variability in Marfan Syndrome
Marfan syndrome is an autosomal dominant connective tissue disorder caused by mutations in the fibrillin-1 gene (FBN1). Penetrance of FBN1 mutations is complete but intra and inter familial clinical expressivity is extremely…
- Trial name
- Variarfan (NCT01707563)
- Testing
- skin punch biopsy and molecular biology, fibroblast culture and molecular biology
- Where
- France
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- Assistance Publique - Hôpitaux de Paris