Clinical trials: Circadian Timing
Cardiometabolic Syndrome, Type 2 Diabetes
Circadian Intervention to Improve Cardiometabolic Health
The overall goal is to examine the efficacy of a circadian intervention in people with overweight and obesity and habitual short sleep duration (HSSD).
- Conditions
- Cardiometabolic Syndrome, Type 2 Diabetes, Sleep, Time Restricted Feeding
- Trial name
- TOCS (NCT05943626)
- Testing
- Circadian Intervention
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Utah
Chronobiology, Light
Light Timing Study
Chronic circadian misalignment and sleep restriction peak during late adolescence, and are associated with morning daytime sleepiness, poor academic performance, conduct problems, depressed mood, suicidal ideation, substance use…
- Conditions
- Chronobiology, Light, Sleep, Circadian Rhythm
- Trial name
- ALT (NCT04753190)
- Testing
- Baseline Sleep Satiation and Phase Stabilization, Gradually Shifted Sleep
- Where
- United States
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- Rush University Medical Center
Delayed Sleep Phase
Delayed Sleep Timing in Teens Study
This study will (1) comprehensively characterize the substance use disorder (SUD) risk profile associated with adolescent Delayed Sleep Phase (DSP), and (2) probe whether SUD risk is diminished by altering sleep/circadian timing.
- Trial name
- NCT03806296
- Testing
- Increase morning bright light, Decrease evening blue light, Sleep scheduling
- Where
- United States
- Volunteers
- 142 people, healthy volunteers welcome
- Sponsor
- University of Pittsburgh
Obesity
Daytime vs. Delayed Eating Among Obese Individuals
The randomized, cross-over design study is designed to determine how timing of eating affects weight, adiposity, energy metabolism, and gene expression.
- Trial name
- NCT03354169
- Testing
- Eating Condition, No Intervention; withdrawn before randomization
- Where
- United States
- Volunteers
- 38 people, healthy volunteers welcome
- Sponsor
- University of Pennsylvania
Light Exposure, Meal Timing
Role of Photic and Non-photic Time Cues in Resetting Circadian Rhythms
The aim of this study is to determine the principal time cue (light or meals) for resetting circadian rhythms in melatonin and metabolic outcomes.
- Trial name
- LipidPRC (NCT05276739)
- Testing
- Bright Light, Time-restricted eating, Dim light
- Where
- United States
- Volunteers
- 47 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
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
Sleep, Circadian Rhythm Disorders
Sleep Timing, Eating and Activity Measurement Study
There is strong reason to believe that sleep promotion during adolescence could yield long-term health rewards; the investigators' data show that, when they get more sleep, Morning Larks have impressively reduced intake of…
- Conditions
- Sleep, Circadian Rhythm Disorders, Dietary Habits
- Trial name
- STEAM (NCT04992611)
- Testing
- Sleep Extension (Early), Sleep Extension (Late)
- Where
- United States
- Volunteers
- 190 people, healthy volunteers welcome
- Sponsor
- Children's Hospital Medical Center, Cincinnati
Cluster Headache
Circadian Rhythm and Attack-timing in Episodic Cluster Headache Patients in- and Outside of Bout: an Actigraphic Study
The aim is to investigate circadian rhythm in episodic cluster headache using actigraphy.
- Trial name
- NCT02853487
- Testing
- Actigraphy, Diary
- Where
- Denmark
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Danish Headache Center
Obesity
Circadian Misalignment and Energy Balance
Preliminary findings from the investigators' lab suggest that circadian misalignment, occurring when meals and sleep are mistimed from one another, alters resting state neuronal processing in areas relevant to food reward and…
- Trial name
- CM (NCT03663530)
- Testing
- Meal times
- Where
- United States
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Columbia University
Obesity, Hypertension
Timing of Sodium Intake and Nocturnal Sodium Excretion and Blood Pressure in Obese African Americans
Experimental data have shown that timing of sodium intake impacts diurnal patterns of sodium excretion. The purpose of this study is to test the hypothesis that the time of day for salt intake impacts (1) blood pressure rhythms…
- Conditions
- Obesity, Hypertension, Circadian Dysregulation, Salt; Excess
- Trial name
- NCT04021355
- Testing
- Oral sodium supplementation
- Where
- United States
- Volunteers
- 61 people, healthy volunteers welcome
- Sponsor
- University of Alabama at Birmingham
Overweight and Obesity
Circadian Timing, Information Processing and Energy Balance Study
This study design will test biological and behavioral mechanisms in the cross-sectional analyses and determine the prospective effects of circadian alignment and sleep on changes in cardiometabolic risk factors.
- Trial name
- TIME (NCT04759755)
- Where
- United States
- Volunteers
- 139 people, healthy volunteers welcome
- Sponsor
- University of Utah
Meal Timing, Postprandial Glucose
Effect of Circadian Timing of a Standardized Meal on Postprandial Glucose Response in Healthy Adults
This randomized crossover study aims to investigate the effect of circadian timing of a standardized meal (morning versus evening consumption) on postprandial glucose response in healthy adults.
- Conditions
- Meal Timing, Postprandial Glucose, Glycemic Response to Feeding in Healthy Participants
- Trial name
- NCT07545330
- Testing
- Standardized Test Meal
- Where
- Saudi Arabia
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- King Faisal University
Shift Work Type Circadian Rhythm Sleep Disorder, Diabetes Mellitus, Type 2
Shift Work, Heredity, Insulin, and Food Timing Study
The purpose of this study is to determine whether night time eating that coincides with elevated endogenous melatonin impairs glucose tolerance, particularly in carriers of the MTNR1B risk allele.
- Conditions
- Shift Work Type Circadian Rhythm Sleep Disorder, Diabetes Mellitus, Type 2, Circadian Rhythm Sleep Disorder, Shift Work Type, Insulin Resistance
- Trial name
- SHIFT (NCT02997319)
- Where
- United States
- Volunteers
- 365 people, healthy volunteers welcome
- Sponsor
- Massachusetts General Hospital
Overweight, Obesity
Timing of Meals for Weight Loss
While eating the majority of energy earlier in the day appears to have a positive effect on weight and cardiometabolic outcomes, it is not clear how eating earlier in the day influences other behaviors that have a circadian…
- Conditions
- Overweight, Obesity, Weight Loss
- Trial name
- TIME (NCT02204735)
- Testing
- Eat majority of calories in the morning, Eat the majority of calories in the evening
- Where
- United States
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- The University of Tennessee, Knoxville
Dietary Intervention
Eating to Adjust the Timing System
The goal of this clinical trial is to test the effects of dietary composition on the rhythms of food intake, appetite regulation, and rhythms of energy expenditure.
- Trial name
- EATS (NCT05800990)
- Testing
- dietary intervention
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Insomnia, Circadian Rhythm Disorders
Older Adults Exercising On Time
There are indications from epidemiological cohort studies and animal experiments that timing of physical activity (also referred as "chronoactivity"), irrespective of intensity, impacts health and disease.
- Trial name
- ON TIME (NCT06613958)
- Testing
- Physical activity timing
- Where
- Netherlands
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Leiden University Medical Center
Liver Cirrhosis
Sleep Timing and Circadian Preferences in A Sample of Egyptian Patients With Hepatic Cirrhosis
Individuals with hepatic cirrhosis (n=50) and healthy controls (n=30) were recruited. Sleep quality, sleep timing parameters and circadian preference were evaluated using the Pittsburgh Sleep Quality Index (PSQI), Sleep Timing…
- Trial name
- NCT02710227
- Testing
- (PSQI), (STQ).
- Where
- Egypt
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Sherief Abd-Elsalam
Circadian Dysregulation
Development of Countermeasures Against Adverse Metabolic Effects of Shift Work
The goal of this application is to determine whether changing the timing of food intake prevents the adverse metabolic effects of circadian misalignment.
- Trial name
- NCT02291952
- Testing
- Meal schedule
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Circadian Timing - Exercise
Timed Exercise Study
The purpose of this study was to investigate the effect of timed exercise on human circadian rhythms. Subjects were randomized to 5 days of morning or evening treadmill exercise.
- Trial name
- NCT04097886
- Testing
- Morning Exercise, Evening Exercise
- Where
- United States
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- Julie Pendergast
Obesity, Chronobiology Disorders
Chronobiology and Childhood Obesity in a Mediterranean Spanish Population
The main objective is to investigate chronobiological aspects of childhood obesity studying the potential relationship between meal patterns and circadian rhythmicity in a cross-sectional sample of obese, overweight and normal…
- Trial name
- ONTIME-JR (NCT02895282)
- Where
- 2 sites in Spain
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- Universidad de Murcia