Clinical trials: Chronotype
Healthy
The Effect of Chronotype on Motivation and Academic Achievement in Nursing Students Trained With a Flipped Learning Approach
The rapidly evolving world has influenced the sleep-wake cycles of nursing students, shifting them towards an evening chronotype. This shift has negatively impacted their daytime functionality, motivation, and academic success.
- Trial name
- NCT07391865
- Testing
- Flipped classroom approach
- Volunteers
- 111 people, healthy volunteers welcome
- Sponsor
- Trakya University
Sleep, Athletic Performance
Sleeping Habits on Performance Following Sleep Deprivation
The goal of this randomized crossover clinical trial is to determine if habitual sleeping habits can predict endurance performance following a night of partial sleep deprivation in healthy untrained, recreationally trained, and…
- Conditions
- Sleep, Athletic Performance, Hemodynamics
- Trial name
- NCT05942664
- Testing
- Sleep
- Where
- Canada
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- University of Guelph
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
Healthy
Effects of Reactive Hypoglycaemia on Cognition in Earlier or Later Chronotypes
Studies suggest a link between lower postprandial glycaemic response and better cognitive performance in children, adolescents, and young adults, though evidence remains inconclusive.
- Trial name
- GlyCoBrainI2 (NCT06941740)
- Testing
- immediate verbal memory after low glycemic index breakfast inducing no reactive hypoglycaemia, immediate verbal memory after low glycemic index breakfast causing reactive hypoglycaemia
- Where
- Germany
- Volunteers
- 177 people, healthy volunteers welcome
- Sponsor
- Anette Buyken
Sleep Quality, Chronotype
Sleep, Chronotype, and Prosocial Allocation Decisions
This observational behavioural study examines whether individual differences in sleep quality, sleep timing, and chronotype are associated with prosocial allocation decisions in adults.
- Conditions
- Sleep Quality, Chronotype, Prosocial Decision-Making, Circadian Timing
- Trial name
- SCPAD (NCT07697092)
- Testing
- Sleep, Circadian, and Prosocial Allocation Assessment
- Where
- 2 sites in Hong Kong
- Volunteers
- 128 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
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
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
Shift Work Type Circadian Rhythm Sleep Disorder, Chronobiology Disorders
Effects of Shift Work on Nurse Staff Health
Shift work deeply impacts on temporal organization leading to a circadian desynchronization, which translates into a worsening of the sleep quality and work ability during waking hours.
- Conditions
- Shift Work Type Circadian Rhythm Sleep Disorder, Chronobiology Disorders, Mood Swing, Physical Activity
- Trial name
- Turnisti (NCT03453398)
- Testing
- Shifts working hours with different schedules
- Where
- Italy
- Volunteers
- 71 people, healthy volunteers welcome
- Sponsor
- I.R.C.C.S Ospedale Galeazzi-Sant'Ambrogio
Healthy
Effects of Breakfast Glycaemic Index on Cognition in Earlier or Later Chronotypes.
High glycaemic index (GI) breakfasts 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
- GlyCoBrainIn1 (NCT06916039)
- Testing
- immediate verbal memory after high GI breakfast, immediate verbal memory after low glycemic index breakfast
- Where
- Germany
- Volunteers
- 177 people, healthy volunteers welcome
- Sponsor
- Anette Buyken
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
Healhty
Effect of Chronotype on Balance and Cognitive Function
Balance is the ability of an individual to maintain posture against gravity and sustain stability during movement; it depends on the coordinated functioning of the proprioceptive, visual, and vestibular systems, as well as the…
- Trial name
- NCT07691866
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Istanbul Gedik University
Gingivitis, Periodontitis
Circadian Clock Gene Expression in Periodontal Disease
This observational study aims to investigate whether periodontal inflammation is associated with alterations in the expression of circadian clock-related genes and proteins in gingival tissues.
- Trial name
- PERIOCLOCK (NCT07452783)
- Testing
- Gingival Tissue Biopsy
- Where
- Turkey (Türkiye)
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Inonu University
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
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
Exercise Induced Hypoalgesia, Circadian Rhythm
Pain Perception and Exercise-Induced Hypoalgesia Across Circadian Rhythms
The goal of this randomized crossover clinical trial is to investigate whether exercise-induced hypoalgesia (EIH) is influenced by circadian rhythm in healthy adults aged 18-40 years.
- Conditions
- Exercise Induced Hypoalgesia, Circadian Rhythm, Pain Perception, Healthy Participants
- Trial name
- NCT07290465
- Testing
- High-Intensity Functional Training (HIFT), Supervised Deep Breathing
- Where
- Turkey (Türkiye)
- Volunteers
- 56 people, healthy volunteers welcome
- Sponsor
- Medipol University
Gingivitis, Circadian Rhythm Disruption
Circadian Clock Proteins in Gingival Crevicular Fluid of Individuals With and Without Circadian Rhythm Disruption
This prospective cross-sectional clinical study aims to investigate the relationship between circadian rhythm disruption and periodontal inflammation by evaluating circadian clock protein levels, inflammatory (IL-1beta) and…
- Conditions
- Gingivitis, Circadian Rhythm Disruption, Periodontal Inflammation, Circadian Rhythm Sleep Disorder, Shift Work Type
- Trial name
- Nursma-CIRC-HG (NCT07592052)
- Testing
- Standard Periodontal Treatment
- Where
- Turkey (Türkiye)
- Volunteers
- 116 people, healthy volunteers welcome
- Sponsor
- Inonu University
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
Chronotype, Exercise
The Effect of Circadian Rhythm on Physical Performance in Healthy Male Individuals
Little is known about optimizing the timing of exercise periods to maximize the health benefits of exercise. Furthermore, exercise is a potent modulator of skeletal muscle metabolism and it is clear that skeletal muscle has a…
- Trial name
- NCT06311539
- Testing
- Theraband Strengthening Exercise Program
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Istanbul Bilgi University
Sleep, Depression
Behavioral and Sleep Hygiene Education With Mindfulness Intervention to Improve Sleep Regularity in Adolescents
Sleep plays a fundamental role in both mental- and physical-health, with good sleep health including adequate duration and quality, appropriate timing, regularity, and absence of sleep disorders.
- Conditions
- Sleep, Depression, Anxiety, Chronotype
- Trial name
- NCT06028997
- Testing
- Behavioral and Sleep Hygiene Education with Mindfulness Intervention
- Where
- 2 sites in Iceland
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Solveig Magnusdottir