Clinical trials: Variability
Glaucoma
Variability in Perimetry Study
Improved Assessment of Visual Field Change is a trial aimed at investigating mechanisms of visual field testing variability. The investigators have found using larger stimulus size substantially lowers short-term variability.
- Trial name
- VIPII (NCT01051739)
- Testing
- Comparison of four visual field testing strategies
- Where
- United States
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
Cancer, Chronic Stress
Can You Breathe Your Way To Better Health?
The purpose of this clinical trial is to explore the effects of either a 2-week high-intensity interval training (HIIT) or breath training intervention on measures of overall health, circulating biomarkers of stress, and immune…
- Conditions
- Cancer, Chronic Stress, Autonomic Dysfunction
- Trial name
- NCT06829836
- Testing
- Hight intensity interval training, Cyclic Hyperventilation with Retention
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- University of Northern Colorado
Healthy, Autonomic Nervous System
Cardiovascular and Cerebrovascular Control in Healthy Subjects
The aim of the study is to evaluate autonomic function and cerebrovascular control in 60 healthy subjects by means of noninvasive analysis of time series variability.
- Conditions
- Healthy, Autonomic Nervous System, Cerebral Autoregulation
- Trial name
- CardioSan (NCT05706532)
- Testing
- active standing
- Where
- Italy
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- IRCCS Policlinico S. Donato
Gingivitis, Oral Disease
Individual Variability of Experimental Gingivitis Response
The study aims to investigate the genetic cause of the variability between individuals seen in the development of the gum disease, gingivitis.
- Trial name
- NCT05656417
- Testing
- Temporary cessation of all oral hygiene
- Where
- United Kingdom
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- King's College London
Autism Spectrum Disorder With Intellectual Deficiency
Recording Stress Biomarkers in Autism Spectrum Disorders
The goal of this observational study is to learn how stress affects children and young people with autism spectrum disorder (ASD).
- Trial name
- STRESSDEFIS (NCT07535801)
- Where
- France
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Universite Cote d'Azur
Heart Rate Variability, Body Fat
The Impact of Re-training Following Detraining on Greco-Roman Wrestlers
The aim of this study is to analyse the alterations in the physical, physiological, and performance characteristics of the elite Greco-Roman wrestlers who experienced a prolonged period of detraining (14 weeks) as a result of the…
- Conditions
- Heart Rate Variability, Body Fat, Wrestling, Fitness Testing
- Trial name
- NCT06606977
- Testing
- Training
- Where
- Turkey (Türkiye)
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Tuba Melekoğlu
Healthy Volunteers
An Analysis of Healthy Caucasian Knees
In current literature, databases of healthy knee anatomy and function are confined to small sample sizes or singular imaging modalities.
- Trial name
- PC-CT KNEE (NCT07470671)
- Testing
- CT scan images of the knee, EOS scan of full leg, Ultrasound-based gap analysis
- Where
- Belgium
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
CYP2D6 Polymorphism
Effects of Retinoids on CYP2D6 Activity During Pregnancy
Prospective drug interaction study during pregnancy.
- Trial name
- NCT03117660
- Testing
- Vitamin A
- Where
- United States
- Volunteers
- 82 people, healthy volunteers welcome
- Sponsor
- University of Washington
Healthy Subject, Heart Rate Variability
Osteopathic Manipulative Treatment Effects on High Frequency Parameters in Healthy Subjects
The aim of the present study is to determine the extend to which osteopathic manipulative treatment (OMT) is effective on a sample of healthy subjects in changing high frequency (HF) parameters.
- Trial name
- NCT01908920
- Testing
- Osteopathic manipulative treatment, CONTROL
- Where
- Italy
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- European Institute for Evidence Based Osteopathic Medicine
Asthma in Children, Lung Function Decreased
Lung Function Variability in Children and Adolescents
Long-term variability analysis of peak expiratory flow (PEF) and forced expiratory volume in 1 s (FEV1) has been successfully used in research to predict the exacerbation of the disease in adult individuals with asthma.
- Trial name
- LUV (NCT04163146)
- Testing
- Measurements of PEF and FEV1
- Where
- Greece
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- University of Patras
Healthy, Swimming
EFFECTS OF FOAM ROLLING ON HRV IN ELITE SWIMMERS
The present study aimed to evaluate the effects of foam rolling (FR) on recovery by examining selected time-domain and frequency-domain heart rate variability (HRV) parameters in elite swimmers following intensive interval sprint…
- Conditions
- Healthy, Swimming, Autonomic Nervous System Function, Recovery
- Trial name
- HRV-SWIMMING (NCT07641062)
- Testing
- Swimming+FoamRollingRecovery, SwimmingRecovery
- Where
- Turkey (Türkiye)
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Uludag University
Stress, Physiological, Sport Injury
Immediate Effect of Non-invasive Auricular Acupoint Stimulation for the Performance and the Meridian Activities of Archery Athletes
In our hypothesis, auricular acupoint stimulation might improve the attention and heart rate variability in archery athletes. The meridian activities regarding the attention and action in Chinese medicine systems might be…
- Trial name
- NCT04637607
- Testing
- Auricular acupoints stimulation
- Where
- Taiwan
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- Chang Gung Memorial Hospital
Stress Related Disorder, Sophrology
WELL-being Improvement Following a SOphrology Intervention in Hospital Staff
Work stress and psychosocial risks are a major public health problem. Health-care workers (HCW) are particularly at risk. Moreover, non-HCW staff of hospitals can also be at risk, with working environment described as the main…
- Conditions
- Stress Related Disorder, Sophrology, Neurolinguistic Programming
- Trial name
- So-Well (NCT05425511)
- Testing
- sophrology / neurolinguistic programming intervention
- Where
- France
- Volunteers
- 103 people, healthy volunteers welcome
- Sponsor
- University Hospital, Clermont-Ferrand
Restless Leg Syndrome
The Suggested Immobilization Test With Exploratory Heart Rate Variability Analysis for Diagnosis of Restless Legs Syndrome
Restless leg syndrome (RLS) is not uncommon and can also affect people's health and quality of life. Mainly, RLS is diagnosed based on clinical criteria subjectively.
- Trial name
- NCT07110961
- Testing
- A suggested immobilization test (SIT)
- Where
- Thailand
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- Siriraj Hospital
Intermittent Fasting
Glycemic Variability in Intermittent Fasting
The aim was to test the difference in glycemic variability after meal consumption during intermittent fasting and the usual diet.
- Trial name
- GLUInterm (NCT05806489)
- Testing
- Intermittent Fasting, Control Diet
- Where
- Croatia
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Josip Juraj Strossmayer University of Osijek
Overweight
Diurnal Variability in the Regulation of Beta-cell Function and Insulin Sensitivity in Overweight People
The purpose of this research study is to learn more about how our body produces sugar, breaks down fat for fuel, and makes insulin (the major hormone that controls the production of blood sugar and fat breakdown) during a 24-hour…
- Trial name
- 24Hr (NCT02011581)
- Where
- United States
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Washington University School of Medicine
Exercise
Correlation Between HRV and Performance in Eccentric Resistance Training Associated With Partial Blood Flow Restriction
Studies on resistance training (RT) associated with blood flow restriction (BFR) is an alternative method of gaining strength and hypertrophy muscle.
- Trial name
- NCT04422301
- Testing
- Blood flow restriction
- Where
- Brazil
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Franciele Marques Vanderle
Exercise, Healthy Participants
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
The goal of this clinical trial is to investigate if blood glucose responses are similar between and within individuals in response to standardized exercise in adults with and without Type 1 diabetes.
- Conditions
- Exercise, Healthy Participants, Glucose Variability, Type 1 Diabetes (T1D)
- Trial name
- NCT07209930
- Testing
- Exercise, Rest
- Where
- Ireland
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- University College Dublin
Athletic Performance, Mental Toughness
Effects of Imagery and Breathing Exercises on Swimmers' Performance, Mental Toughness, and Heart-Mind Coherence
This randomized controlled trial aimed to investigate the effects of a 10-week imagery and breathing exercise intervention on 200-meter freestyle swimming performance, mental toughness, and heart-mind coherence in swimmers.
- Conditions
- Athletic Performance, Mental Toughness, Coherence (Heart-Mind Synchronization)
- Trial name
- NCT06920875
- Testing
- Imagery and Breathing Exercises
- Where
- Turkey (Türkiye)
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- Ankara Yildirim Beyazıt University
Parkinson Disease(PD)
AR Stimulation Effects on Gait, Anxiety, and Brain Connectivity in Parkinson's Disease
A project aims at addressing gait impairments and non-motor symptoms such as anxiety and stress in Parkinson's disease (PD) patients through a novel approach involving heart rate variability (HRV) feedback and Augmented Reality…
- Trial name
- NCT06367101
- Testing
- AR training with gait and HRV feedback
- Where
- Taiwan
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Chang Gung University