| Effects of Melatonin Supplementation on Sleep Quality in Patients With Advanced Glaucoma (NCT06868745) | University of Sao Paulo | 2022-05-04 |
| Food and Circadian Timing (NCT04743271) | Oregon Health and Science University | 2022-04-01 |
| Circadian Rhythm and Delirium in ICU (NCT05342987) | Shanghai Zhongshan Hospital | 2022-02-15 |
| The Effect of Circadian Rhytm on Postoperative Pain Undergoing Pediatric Surgery (NCT05379192) | Faruk Cicekci | 2022-01-01 |
| Circadian Rhythm and Metabolic Effects of Exercise (NCT05115682) | Karolinska Institutet | 2021-11-10 |
| Pistacho and Sleep Quality (NCT07651605) | Universidad Autonoma de Queretaro | 2021-09-13 |
| Effect of Circadian Rhythm on Brain NAD Measured by Phosphorus Magnetic Resonance Spectroscopy at 7 Tesla (NCT05093088) | Ecole Polytechnique Fédérale de Lausanne | 2021-09-01 |
| Treatment of Chronic Insomnia According to Yin Yang Theory and Its Correlation With Circadian Rhythm (NCT05452577) | The First Affiliated Hospital with Nanjing Medical University | 2021-01-22 |
| Insomnia Treated by Traditional Chinese Medicine and Its Circadian Rhythm (NCT04448197) | The First Affiliated Hospital with Nanjing Medical University | 2020-03-04 |
| Effects of Light and Sound Modification on Sleep Quality and Circadian Rhythm in the MICU Patients (NCT04129918) | Shin Kong Wu Ho-Su Memorial Hospital | 2020-01-05 |
| CircaHealth Development and Evaluation (NCT03835572) | University of Miami | 2019-02-23 |
| Interaction of Melatonin With MTNR1B Genotype on Glucose Control - Study 2 (NCT03464084) | Brigham and Women's Hospital | 2018-02-17 |
| Progesterone Variation on the Final Day of Oocyte Maturation. (NCT03366025) | Fundacion Dexeus | 2017-11-01 |
| Influence of Caffeine Consumption on the Human Circadian System (NCT05409339) | Psychiatric Hospital of the University of Basel | 2016-05-09 |
| Effects of Light and Exercise on Human Circadian Rhythms and Performance (NCT02747719) | Brigham and Women's Hospital | 2016-04-01 |
| The Circadian Rhythm of Copeptin (NCT02604875) | University Hospital, Basel, Switzerland | 2015-11-01 |
| Aspirin AM or PM: Effect on Circadian Rhythm of Platelet Reactivity (NCT01900639) | Leiden University Medical Center | 2013-07-01 |
| Study of Circadian Clock Properties in Healthy Subjects, Obese and Type 2 Diabetic Patients. (NCT02384148) | University Hospital, Geneva | 2011-06-01 |
| Actigraphic Measurement of a Neurosurgical Procedure (NCT00945230) | Child Psychopharmacology Institute | 2009-03-01 |
| Examining the Biological Factors That Affect Sleep Duration (NCT00607204) | Brigham and Women's Hospital | 2005-10-01 |
| Effects of Different Colors of Light on Human Physiology (NCT00200863) | Brigham and Women's Hospital | 2005-04-01 |
| Impact of Sleep Disruption on the Menstrual Cycle (NCT00456222) | Brigham and Women's Hospital | 2003-06-01 |
| Circadian Variations in Ocular Blood Flow in Glaucomatous and Normal Eyes (NCT00707226) | Medical University of Vienna | 2000-11-01 |
| Effects of Sex Hormones on Circadian Rhythm in Men and Women (NCT00001285) | National Institute of Mental Health (NIMH) | 1991-08-01 |