CIRCADIAN RHYTHM

This study tests whether eating meals at times that match your natural body clock (chrono-nutrition) 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 6 months ago will either follow…

This study tests if a drug called esketamine can improve sleep in postmenopausal women after lower-limb fracture surgery. Many women in this age group have trouble sleeping, and surgery can make it worse. The trial will compare sleep quality and body rhythms in 164 women who rece…

This study looks at whether doing progressive relaxation exercises at the right time of day—based on each person's natural body clock—can help manage symptoms, improve sleep, increase comfort, and boost mental well-being in people receiving hemodialysis. About 75 adults on dialys…

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

This study follows 160 Hong Kong residents aged 18 to 70 to see if their daily rest-activity rhythms can predict who develops major depressive disorder. Participants wear a device to track sleep and movement and complete questionnaires over time. No treatment is given; the goal i…

This study will test a new wearable device that tracks body rhythms in 30 adults—some healthy, some with sleep apnea, and some with insomnia. Participants will wear the device and provide saliva samples to compare how well the wearable measures internal body time. The goal is to …

This study looks at whether exercising at different times of day changes how we feel pain afterward. Healthy adults aged 18-40 will do morning and evening sessions to see if pain sensitivity shifts. The goal is to understand how our body clocks influence pain relief from exercise…

This study looks at how changes in blood pressure during sleep (called dipping) relate to heart electrical activity in 140 adults with high blood pressure. Researchers will compare people whose blood pressure drops normally at night to those whose does not, to see if non-dippers …

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

This study looks at how sleep, activity, and meal timing in early pregnancy affect blood sugar patterns and the risk of gestational diabetes. About 140 pregnant women without diabetes will wear monitors and use a food app to track their habits. The goal is to see if these behavio…

This study looks at how losing sleep and having out-of-sync body clocks can make it harder for the body to use insulin properly, a condition called insulin resistance. Researchers will test 48 healthy adults aged 18-45 to see how the stress hormone cortisol affects this process. …

This study looks at whether doing moderate resistance exercises in the morning can help young adults sleep better. Researchers will compare how the exercise affects sleep quality in people who are naturally morning types versus evening types. The goal is to see if tailoring exerc…