Circadian rhythm sleep disorder

This European trial tests a 24-week lifestyle program for 400 night-shift workers. The program, delivered via a mobile app and workshops, focuses on sleep, stress, diet, and exercise. The goal is to see if it helps workers sleep longer and improve their health.

This study tests whether eating meals at times that match your body's internal clock can help people who have had weight-loss surgery keep the weight off and improve their health. About 246 adults who had sleeve gastrectomy at least six months ago will either follow standard diet…

This study tests whether a digital program that combines cognitive behavioral therapy for insomnia with circadian rhythm coaching can prevent depressive symptoms from worsening in college students aged 18-24 who have trouble falling asleep and tend to be night owls. Participants …

This study compares two exercise approaches—short 'exercise snacks' spread throughout the day versus traditional aerobic exercise—in adults with moderate to severe obstructive sleep apnea. Researchers will measure sleep quality, daytime sleepiness, and physical function over 8 we…

This study tests whether a drug called gamma-hydroxybutyrate (GHB) can help intensive care patients get better deep sleep. Sleep problems are very common in the ICU and can lead to serious issues like confusion and longer recovery. The trial will give GHB or a placebo to 24 adult…

This study tests a slow-release melatonin (PedPRM) in 120 children aged 6 to 18 who have anorexia nervosa and trouble sleeping. Participants take either melatonin or a placebo for 13 weeks. The goal is to see if it safely improves total sleep time and related symptoms like anxiet…

This study looks at whether adding sleep-focused treatments to standard psychiatric care can reduce suicide risk in young adults. About 90 college students with suicidal thoughts and sleep problems will be randomly assigned to one of three sleep interventions. Researchers will tr…

This study tests whether a mobile app or virtual reality program that teaches mindfulness and breathing exercises can lower stress, burnout, and improve sleep and thinking in nurses who work rotating shifts. 300 nurses will be split into four groups: one gets health education onl…

This study tests whether doing progressive relaxation exercises at times matched to each patient's natural circadian rhythm can help manage symptoms, improve sleep quality, increase comfort, and boost mental well-being in people receiving hemodialysis. Researchers will enroll 75 …

This study tests whether a drug called esketamine can improve sleep after surgery in postmenopausal women, who often have trouble sleeping. About 164 women having leg fracture surgery will receive esketamine or a placebo during the operation. Researchers will check their sleep qu…

This study tests whether personalized lifestyle coaching can help emergency medicine residents stay alert and recover better during night shifts. Thirty residents will either receive one-on-one coaching or just a handout on sleep and nutrition. Researchers will track sleep, react…

This study tests whether wearing blue-blocking glasses at night can help teenagers (ages 12-18) with insomnia or delayed sleep phase disorder who are already receiving psychiatric care. Forty participants will wear the glasses or use real darkness for one week. The goal is to see…

This study looks at whether doing moderate resistance exercises in the morning can improve sleep quality in young adults aged 18-35. Over 8 weeks, 64 participants with different sleep patterns (morning or evening types) will follow an online exercise program. Researchers will mea…

This study looks at whether exercise can help protect the body from health problems caused by shift work, which disrupts natural sleep-wake cycles. Sixteen healthy but inactive adults will spend 5 days in a lab, simulating day shifts then night shifts, with some doing exercise. R…

This study looks at how whole-body heat therapy (hyperthermia) changes body temperature, pain sensitivity, and pain during movement in 60 people—half with chronic widespread pain (like fibromyalgia) and half healthy. Participants will receive six heat sessions over three weeks. T…

This study will test a new wearable device that monitors your body's internal clock (circadian rhythm) by tracking signals like heart rate and movement. Researchers will compare the device's readings to standard saliva tests in 30 adults who are either healthy, have sleep apnea, …

This study looks at how a disrupted body clock (like in night-shift workers) affects gum inflammation. Researchers will measure clock proteins and immune markers in the gum fluid of 116 people with and without gum disease. The goal is to understand the link between sleep-wake cyc…

This study looks at how losing sleep and having a disrupted body clock (like shift workers) can make the body less responsive to insulin, a key step toward obesity and type 2 diabetes. Researchers will test 48 healthy adults aged 18-45 to see how the timing of the stress hormone …

This pilot study looks at how sleep, physical activity, and meal timing in early pregnancy relate to blood sugar patterns and the risk of gestational diabetes. Researchers will track 140 pregnant women using wearable devices and an AI food-logging app. The goal is to see if real-…

This study looks at whether giving preterm babies their mother's breast milk at the same time of day it was expressed (like night milk at night) helps them sleep better and develop a healthy day-night rhythm. About 200 preterm infants will be split into two groups: one gets milk …

This study looks at whether being male or female changes how the body handles hunger and blood sugar when sleep and eating are out of sync, like during night shifts. Researchers will compare 36 healthy adults in a controlled lab setting. Results could lead to personalized shift s…

This study looks at how the amount of deep sleep just before waking affects how alert people feel after a 2-hour nap taken at night. Researchers will monitor brain activity during sleep and test reaction times after waking. The goal is to understand sleep inertia and improve nap …

This study looks at how the time of day and the menstrual cycle (specifically low vs. high progesterone phases) affect strength and thinking in female athletes. Thirty women aged 18-30 who train regularly will be tested at 7am, 12pm, and 6pm during two different phases of their c…

This study aims to understand how working night shifts in busy hospital settings like intensive care and emergency rooms affects what and when healthcare workers eat. Researchers will ask 245 adults who work night shifts in healthcare or other jobs to fill out an online questionn…

This study follows 160 adults in Hong Kong over time to see if disruptions in daily activity and sleep (rest-activity rhythms) can predict who develops major depressive disorder. Participants will wear activity monitors and complete questionnaires about mood and sleep. The goal i…

This study looks at whether exercising at different times of day changes how we feel pain. Fifty-six healthy adults will do a 12-minute high-intensity workout in both the morning and evening. Researchers will measure pain thresholds before and after exercise to see if time of day…

This study looks at whether the natural drop in blood pressure during sleep (called 'dipping') is linked to changes in the heart's electrical activity in people with high blood pressure. Researchers will monitor 140 adults using a 24-hour blood pressure device and compare those w…