Clinical trials: Chronotype
Chronotype, Pregnancy Complications
Examining The Effect of Chronotype Differences on Sleep Quality and Pregnancy Symptoms in Pregnant Women
Purpose: The aim of this study was to examine the effect of chronotype differences on sleep quality and pregnancy symptoms in pregnant women. Methods: Eighty-five pregnant women in the second trimester were included in the study.
- Trial name
- NCT06413784
- Testing
- Morning chronotype, Intermediate chronotype, Evening chronotype
- Where
- Turkey (Türkiye)
- Volunteers
- 85 people, healthy volunteers welcome
- Sponsor
- Istanbul Medipol University Hospital
PreDiabetes, Overweight
Night Owl Metabolism
The proposed study uses a novel and rigorous randomized cross-over study design in youth (18-23y) with late and non-late chronotype (n=35 per group) to assess the glycemic effect of "aligning" an oral glucose tolerance test…
- Conditions
- PreDiabetes, Overweight, Impaired Glucose Tolerance
- Trial name
- NCT06507722
- Testing
- Timing of OGTT, Timing of Standardized Meal
- Where
- United States
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins University
Athletic Performance, Sports Performance
Effects of Afternoon Napping, Caffeine, and Standardised Active Recovery on Evening Athletic Performance
This study evaluated whether afternoon napping, caffeine ingestion, and a standardised active recovery and nutritional protocol could influence evening physical and cognitive performance in healthy university athletes.
- Conditions
- Athletic Performance, Sports Performance, Exercise Performance, Circadian Rhythm
- Trial name
- NAP-CAF-REC (NCT07652424)
- Testing
- Afternoon Nap, Caffeine, Standardised Active Recovery and Nutritional Protocol
- Where
- Tunisia
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- The Higher Institute of Sport and Physical Education of Sfax
Healthy, Adult
GlyCoBrain Observational Study
Breakfasts with a high glycaemic index (GI) resulting in sharp rises in blood glucose may adversely affect memory and attention, particularly in the late postprandial phase (i.e., 120-180 minutes after breakfast).
- Trial name
- GlyCoBrainOb (NCT06679088)
- Where
- Germany
- Volunteers
- 350 people, healthy volunteers welcome
- Sponsor
- Paderborn University
Chronotype
Investigation of the Effects of Chronotype Differences on Balance and Muscle Strength in Young Adults
The aim of this study is to investigate the effects of chronotype differences on balance and muscle strength in young adults. Chronotypes of all participants will be determined using the Morningness-Eveningness Questionnaire.
- Trial name
- Chronotype (NCT06949371)
- Testing
- Morning chronotype, Evening chronotype
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Istanbul Medipol University Hospital
Colour Perception, Color Perception
Visual Perception, Binocular Rivalry, and Fatigue-Related Individual Differences in Colour and Illumination Judgement
This observational study aims to characterise individual differences in colour perception and binocular rivalry. Participants will complete computer-based visual perception tasks, including a colour perception task and a…
- Conditions
- Colour Perception, Color Perception, Binocular Rivalry
- Trial name
- NCT07671144
- Testing
- Computer-Based Visual Perception Tasks
- Where
- 2 sites in Hong Kong
- Volunteers
- 128 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Circadian Rhythms
Real-World Use of an iPad-Based Light Therapy App, With Optional Biomarker Collection
This study looks at how adults use an iPad-based light app in everyday life. Light is the main signal that sets the body's internal clock, which controls daily rhythms in sleep, alertness, and many other body systems.
- Trial name
- NCT07744711
- Testing
- Circadian OS iPad-based light app
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Circadian OS, Inc
Endurance Performance, Reaction Time
The Influence of Light Exposure on Exercise Performance Dependent on Chronotype.
The purpose of this study is to determine if an exposure to light in the evening has a positive influence on physical performance regarding endurance, strength and reaction time.
- Conditions
- Endurance Performance, Reaction Time, Muscle Strength
- Trial name
- EX-Light (NCT02203539)
- Testing
- exposure to normal light, exposure to bright light, exposure to blue-enriched light
- Where
- Switzerland
- Volunteers
- 74 people, healthy volunteers welcome
- Sponsor
- University of Basel
Attention Deficit Disorder With Hyperactivity, Sleep Disorders, Circadian Rhythm
Sleep Disorders, Chronotype, and Functional Impairment in the Restrictive ADHD Phenotype
This study aims to explore chronotype and sleep disturbances in ADHD subtypes and their relation to functional impairment.
- Conditions
- Attention Deficit Disorder With Hyperactivity, Sleep Disorders, Circadian Rhythm, Quality of Life, Morningness Eveningness Preference
- Trial name
- NCT06970418
- Where
- Turkey (Türkiye)
- Volunteers
- 104 people, healthy volunteers welcome
- Sponsor
- Dr. Behcet Uz Children's Hospital
Obesity
CHRONOtype-adjusted DIET on Weight Loss
BACKGROUND: Several reports have observed that the alteration of normal biological rhythms is associated with obesity development.
- Trial name
- CHRONO-DIET (NCT03755674)
- Testing
- CHRONOTYPE-ADJUSTED DIET
- Volunteers
- 96 people, healthy volunteers welcome
- Sponsor
- Universidad Católica San Antonio de Murcia
Chronotype, Circadian Rhythm
Chronotype Alignment and Time Perception
People differ in chronotype - whether they function best in the morning ("larks") or the evening ("owls"). This study asks whether the match or mismatch between a person's chronotype and the time of day at which they are tested…
- Conditions
- Chronotype, Circadian Rhythm, Sleep, Time Perception
- Trial name
- NCT07677111
- Testing
- Morning test session (about 08:00), Evening test session (about 22:00)
- Where
- Hong Kong
- Volunteers
- 240 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Overweight and Obesity
Chronotype-adapted Diet and Weight Loss
In humans, prolonged alterations in the circadian rhythm have been linked to cognitive impairments, premature ageing, and oncological and metabolic disorders such as diabetes and obesity.
- Trial name
- CHRONODIET (NCT05941871)
- Testing
- Dietary intervention - intervention group, Dietary intervention - control group
- Where
- Italy
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Azienda Ospedaliero-Universitaria Careggi
Conditionally Healthy Persons, Persons With a High Body Mass Index
Medico-ecological Monitoring ((CSM, MCTQ, SPAQ, PSQI, HRV, Spirometry; Anthropometry, BP) of the Different Population Groups (Students, Schoolchildren, Volunteers) in North Caucasus
Observational Clinical Trial of the chronotype, sleep quality, seasonal pattern, behavioral time preferences, the functional state of the body's regulatory systems and respiratory systems in individuals of different age groups…
- Trial name
- NCT04851080
- Testing
- Heart Rate Variability, Spirometry, Testing of psycho-physiological functions using four questionnaires
- Where
- Russia
- Volunteers
- 370 people, healthy volunteers welcome
- Sponsor
- Vladikavkaz Scientific Center of the Russian Academy of Sciences
Premature Ejaculation
Chronotype and Premature Ejaculation
Chronotype (or circadian preference) has previously been shown to be associated with sexual attitudes and behaviors and is an important factor affecting sexual satisfaction.
- Trial name
- NCT04841395
- Testing
- Intravaginal ejaculatory latency time (IELT), Arabic Index of Premature Ejaculation (AIPE), Morningness-Eveningness Questionnaire (MEQ)
- Where
- Turkey (Türkiye)
- Volunteers
- 217 people, healthy volunteers welcome
- Sponsor
- Bursa Yuksek Ihtisas Training and Research Hospital
Healthy
Nutrition Trial on the Glycaemic Response to High GI Meals Consumed at Morning vs. Evening-The ChroNu Study
Several studies suggest that meal timing plays an important role in the development of obesity and metabolic diseases. Especially in the evening, a high consumption of carbohydrates, which greatly increase blood glucose levels…
- Trial name
- ChroNu (NCT04298645)
- Testing
- Glycaemic response to high GI carbohydrates consumed at morning versus evening meals.
- Where
- Germany
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Paderborn University
Depression, Anxiety, Chronotype
Effects of Exercıse on Chronotype, Sleep Qualıty and Depressıon Symptom Level in Unıversıty Students
The aimed this study is to determine the effect of regular exercise program on mood, chronotype and sleep quality in university students.
- Conditions
- Depression, Anxiety, Chronotype, Physical Activity
- Trial name
- NCT06981702
- Testing
- Exercise
- Where
- Turkey (Türkiye)
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Aydin Adnan Menderes University
Migraine Disorders
Temporal, Environmental, and Genetic Factors Regulating Exercise and Migraine
Chronic pain, of which migraine is among the most common, affects 100 million US adults and costs between $560 to $635 billion dollars annually.
- Trial name
- NCT04553445
- Testing
- Chronotype, Green exercise
- Where
- United States
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- University of Nevada, Las Vegas