CIRCADIAN RHYTHM

This study aimed to understand why morning bright light therapy, which can help shift a teenager's sleep schedule earlier, sometimes doesn't work. Researchers tested 88 healthy teens aged 14-17 to see how staying up late under normal home lighting and getting less sleep affects t…

This study looked at whether adding special breathing muscle training to a running schedule based on a child's natural body clock (chronotype) could improve performance. It involved 75 healthy boys aged 10-13 who had played football for at least two years. Researchers measured ch…

This research study aimed to understand how melatonin (the 'sleep hormone') and a specific gene called MTNR1B work together to control blood sugar levels. Researchers studied 23 healthy adults in a controlled laboratory setting, measuring how different melatonin levels affected t…

This study looked at whether the time of day a donor heart is collected affects how well heart transplant patients do afterward. Researchers followed 200 patients who received heart transplants for up to three years, comparing outcomes between hearts collected during daytime vers…