Clinical trials: Variability
Sleep, Heart Rate
A Digital Mindfulness Intervention to Improve Sleep Efficiency and Heart Rate Variability in Healthy Adults
This study tested whether a 10-day smartphone app-based mindfulness program can improve sleep and reduce physiological stress in healthy adults.
- Trial name
- NCT07469644
- Testing
- App-based mindfulness program (Headspace via Ōura app)
- Where
- Denmark
- Volunteers
- 91 people, healthy volunteers welcome
- Sponsor
- University of Southern Denmark
Alzheimer Disease
ADDIA Chronobiological Study
The present single center clinical chronobiological study on 24 subjects (12 patients with mild to moderate form of Alzheimer's disease and 12 Healthy subjects) aims at characterizing the ADDIA biomarkers: a) blood cell-based…
- Trial name
- NCT02973971
- Testing
- volumeric MRI
- Where
- France
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Amoneta Diagnostics SAS
Cardiovascular Morbidity
Experimental Exposure to Air Pollutants and Sympathetic Nerve Activity in Human Subjects
The primary hypothesis of the study is that in healthy elderly subjects experimental exposure to air pollutants increases sympathetic nervous system activity compared with sham (clean air) exposure.
- Trial name
- Particles (NCT01914783)
- Testing
- ultrafine particles, ultrafine particles and ozone, clean air
- Where
- Germany
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Hannover Medical School
Motor Activity
Variability of Healthy People and People After Stroke Results in the Box and Block Test
Main aim of the study is to find out how many attempts of each subtest in the Box and Block Test should be done in clinical practice during testing people after stroke who are 20-64 years old.
- Trial name
- NCT05925231
- Testing
- Box and Block Test
- Where
- 2 sites in Czechia
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Charles University, Czech Republic
Temporal Lobe Epilepsy
Autonomic Dysfunction in Temporal Lobe Epilepsy and SUDEP
The study aimed at detection of autonomic dysfunction among cases with temporal lobe epilepsy; using different electrophysiological techniques.
- Trial name
- NCT06269822
- Testing
- Sympathetic skin response, heart rate variability test, quantitative EEG
- Where
- Egypt
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Cairo University
Reactive Hyperemia, Micro RNA
Effect on Markers of Cardiovascular, Reproductive and Cancer Risk From Firefighting Training
Epidemiological studies based on Danish registries have observed that Danish male firefighters have more cardiovascular disease, infertility diagnose and a trend to increased risk of cancer than other Danish employed males.
- Conditions
- Reactive Hyperemia, Micro RNA, Heart Rate Variability, DNA Strand Breaks
- Trial name
- BIOBRAND3 (NCT05753254)
- Testing
- Firefighting training exercises with no fire, Firefighting training exercises under wood fire, Firefighting training exercises under gas fire
- Where
- 2 sites in Denmark
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- National Research Centre for the Working Environment, Denmark
Restenosis or Adverse Cardiovascular Event
Endothelial Function and Heart Rate Variability After Stenting
The objective of this study is to evaluate whether impaired endothelial function and low heart rate variability are associated with clinical restenosis after percutaneous coronary intervention with stent implantation in patients…
- Trial name
- FUNKIS (NCT00999323)
- Testing
- stent implantation in coronary artery
- Where
- Norway
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Helse Stavanger HF
Cognitive Reserve, BIS
Use of Sevoflurane to Test Concept of Cognitive Reserve
Previous pilot study had demonstrated a correlation between cognitive reserve and BIS variability during steady state of anesthesia.
- Trial name
- NCT06490588
- Testing
- sevoflurane
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Los Angeles General Medical Center
Exercise-Induced Fatigue
Muscle Oxygenation and Autonomic Recovery After Repeated Sprint in Competitive Soccer Players
This study evaluates the acute and short-term recovery responses to repeated sprint exercise in competitive male soccer players.
- Trial name
- NCT07742163
- Testing
- 8 x 30 m Repeated Sprint Exercise
- Where
- Turkey (Türkiye)
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Pamukkale University
Stress, Relaxation
Decreasing Stress Via Virtual Reality and Binaural Beats in Non-Clinical Adults
This study is a non-clinical substudy conducted within the DESTRESS research program (NCT05036538), which investigates the effects of relaxation interventions on physiological and psychological parameters.
- Conditions
- Stress, Relaxation, Virtual Reality, Binaural Beats
- Trial name
- DESTUD (NCT07387107)
- Testing
- Virtual Reality-Based Natural Environment, Binaural Auditory Stimulation, Control Condition (No Relaxation Intervention)
- Where
- Germany
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- Heart and Brain Research Group, Germany
Healhty
Autonomic and Peripheral Neurochemical Responses to Maximal Rowing Exercise
The goal of this observational study is to characterize autonomic, neuroendocrine, and peripheral neurochemical responses to maximal rowing exercise and early recovery in highly trained male athletes.
- Trial name
- NCT07661953
- Testing
- Maximal 6,000-m rowing ergometer test
- Where
- Poland
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Poznan University of Physical Education
Blood Pressure, Heart Rate Variability
The Cardiovascular Benefits of Reducing Personal Exposure to Air Pollution
Exposure to air pollution is an important risk factor for cardiovascular morbidity and mortality, and is associated with increased blood pressure, reduced heart rate variability, endothelial dysfunction and myocardial ischaemia.
- Trial name
- NCT00809432
- Testing
- Face mask (Dust Respirator), No Face mask
- Where
- China
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- University of Edinburgh
Effects of; Serum, Urine Marking
Biological Variability in Cartilage Specific Biomarkers in Healthy Volunteers.
The purposes of the study are to assess intra individual biological variability of serum and urinary cartilage specific biomarkers and define the best standardized conditions for blood and urine sampling in the frame of…
- Trial name
- COVAR (NCT02348944)
- Testing
- serum and urine sample
- Where
- Belgium
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Artialis
Benign Paroxysmal Positional Vertigo, Vertigo
The Cardiac Autonomic Control System Response to Vestibular Stimulation in Subjects With and Without BPPV
The vestibular system in the inner year is an important system in the body which is responsible for balance. In addition, there is evidence that the vestibular system plays a role in maintaining blood pressure while changing body…
- Conditions
- Benign Paroxysmal Positional Vertigo, Vertigo, Autonomic Nervous System
- Trial name
- NCT03867019
- Testing
- Heart rate variability parameters monitoring
- Where
- Israel
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Clalit Health Services
BPPV, Stress and Anxiety
Heart Rate Variability in Benign Paroxysmal Positional Vertigo
Benign paroxysmal positional vertigo (BPPV) is the most common peripheral vestibular disorder. Although the pathophysiology of BPPV is mainly attributed to the displacement of otoconia within the semicircular canals, recent…
- Trial name
- BPPV-HRV (NCT07472998)
- Testing
- Short-term HRV measurement
- Where
- Turkey (Türkiye)
- Volunteers
- 104 people, healthy volunteers welcome
- Sponsor
- Istanbul Aydın University
Intraocular Pressure
Intra-observer and Inter-observer Variability With Dynamic Contour Tonometry.
The aim of the protocol is to document intra-observer and inter-observer variability with dynamic contour tonometry, and will also test the theory that pulse amplitude, as measured by dynamic contour tonometry, is correlated with…
- Trial name
- NCT00818233
- Testing
- Dynamic contour tonometry
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Yale University
Chronic Pain Due to Injury
Effects of Intramuscular (IM) Oxytocin on Pupil Diameter and Heart Rate Variability (HRV)
The goal of this study is to test the effects of oxytocin on heart rate variability and pupil diameter, both of which have subtle effects on the activity rate of the autonomic nervous system.
- Trial name
- NCT04105998
- Testing
- Oxytocin
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Wake Forest University Health Sciences
Prediabetes (Insulin Resistance, Impaired Glucose Tolerance), Artificial Intelligence Mobile Application
Food-i-Sense Analytics: Integrating AI Into Continuous Glucose Monitoring Data Analysis for Precision Nutrition.
This study aims to improve how we understand and manage blood sugar responses in adults without diabetes. Even in people who appear healthy, blood sugar levels after meals can behave in different ways.
- Trial name
- Food_i Sense (NCT07626658)
- Testing
- Continuous glucose monitoring using a wearable sensor (flash interstitial glucose monitor)
- Volunteers
- 471 people, healthy volunteers welcome
- Sponsor
- IMDEA Food
Memory Lapse
Mindful Attention to Variability in Everyday Memory
Forgetfulness is a common complaint among middle and older adults, with the vast majority of these complaints not rooted in established causes or diagnoses.
- Trial name
- NCT03949868
- Testing
- High Mindfulness, Low Mindfulness, Active control
- Where
- United States
- Volunteers
- 188 people, healthy volunteers welcome
- Sponsor
- Harvard University
Motor Activity
Variability of Healthy People and People After Stroke Results in the Nine Hole Peg Test
Main aim of the study is to find out how many attempts of each subtest in the Nine Hole Peg Test should be done in clinical practice during testing people after stroke who are 20-64 years old.
- Trial name
- NCT06395597
- Testing
- Nine Hole Peg Test
- Where
- 2 sites in Czechia
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Charles University, Czech Republic