A peer-reviewed open-access journal that investigates a wide range of sleep-related topics
Latest topics of this journal:
Clocks & Sleep
Clocks & Sleep, Vol. 8, Pages 32: Circadian Regulation and Pain: A Systematic Review of the Association Between Rest–Activity Rhythm and Pain-Related Outcomes
The rest–activity rhythm (RAR) is a key marker of circadian regulation and is commonly assessed using actigraphy. Emerging evidence suggests that characteristics of RAR, such as amplitude, stability, and regularity, may be associated with pa...
Author: Aline Van Stallen
Posted: May 28, 2026, 12:00 am
Clocks & Sleep, Vol. 8, Pages 31: Efficacy and Safety of Sustained-Release Melatonin Capsules (2 mg) in Healthy Adults with Poor Sleep Quality: A Randomized, Double-Blind, Placebo-Controlled Trial
Sleep disturbances and poor sleep quality are growing public health concerns, adversely affecting both physical and mental health. While exogenous melatonin supplements are used to manage the condition, there is limited evidence available on the e...
Author: Shefali Thanawala
Posted: May 27, 2026, 12:00 am
Clocks & Sleep, Vol. 8, Pages 30: Temporal Dynamics of Sleep During Bright-Light Therapy for Depression and Their Relation to Symptom Improvement
Sleep disturbance is a central feature of depression and a proposed pathway through which Bright-Light Therapy (BLT) exerts antidepressant effects. However, little is known about how sleep reorganises day by day during BLT or whether these dynamic...
Author: Emma Visser
Posted: May 26, 2026, 12:00 am
Clocks & Sleep, Vol. 8, Pages 29: Influences of Diurnal Rhythms on Gut Microbiota and Clock Gene Expression in Procambarus clarkii
This study investigated the diurnal dynamics of the gut microbiota and core clock gene expression in the red swamp crayfish, Procambarus clarkii. Samples were collected at four time points (06:00, 12:00, 18:00, and 24:00) over a 24 h period. Gut m...
Author: Lin Feng
Posted: May 25, 2026, 12:00 am
Clocks & Sleep, Vol. 8, Pages 28: Obstructive Sleep Apneas and Cardiovascular Diseases
Obstructive sleep apnea (OSA) is a sleep-disordered breathing condition characterized by recurrent upper-airway obstruction, leading to intermittent hypoxemia, sleep fragmentation, and sympathetic activation. OSA is highly prevalent in patients wi...
Author: Vincenzo Castiglione
Posted: May 21, 2026, 12:00 am
Clocks & Sleep, Vol. 8, Pages 27: Obstructive Sleep Apnea in Critically Ill Patients: A Structured Narrative Review of Prevalence, Diagnostic Barriers, and Clinical Implications in the ICU
Obstructive sleep apnea (OSA) is a highly prevalent yet frequently underdiagnosed condition that is associated with significant cardiopulmonary, metabolic, and neurocognitive outcomes. Risk factors for OSA overlap with illnesses commonly observed ...
Author: Christine Gharib
Posted: May 20, 2026, 12:00 am
Clocks & Sleep, Vol. 8, Pages 26: Association of Healthy Lifestyle with Insomnia Among Chinese Older Adults: A Cross-Sectional Study
Insomnia is common among older adults and is associated with adverse health outcomes, yet evidence on its relationship with healthy lifestyle in Chinese older adults is limited. This study included 4929 participants from the Hubei Memory and Aging...
Author: Lu Liu
Posted: May 9, 2026, 12:00 am
Clocks & Sleep, Vol. 8, Pages 25: Pet Co-Sleeping and Well-Being: Evidence from Two Cross-Sectional Online Surveys of Youths and Adults
While the health benefits of pet ownership are well-documented, research on co-sleeping with pets has yielded conflicting results, often contrasting objective sleep disturbances with subjective satisfaction. This study examined the association bet...
Author: Kaori Endo
Posted: May 7, 2026, 12:00 am
