Results 21 to 30 of about 178,041 (266)

Circadian disturbances and frailty risk in older adults

Nature Communications, 2023
Frailty is characterized by diminished resilience to stressor events. It is associated with adverse future health outcomes and impedes healthy aging.
Ruixue Cai, Lei Gao, Chenlu Gao, Lei Yu, Xi Zheng, David A. Bennett, Aron S. Buchman, Kun Hu, Peng Li   +8 more
doaj   +1 more source

Impact of work schedules of senior resident physicians on patient and resident physician safety: nationwide, prospective cohort study

BMJ Medicine, 2023
Objective To determine whether long weekly work hours and shifts of extended duration (≥24 hours) are associated with adverse patient and physician safety outcomes in more senior resident physicians (postgraduate year 2 and above; PGY2+).Design ...
Christopher P Landrigan, Salim Qadri, Jason P Sullivan, Charles A Czeisler, Laura K Barger, Matthew D Weaver   +5 more
doaj   +1 more source

Spectroscopic Influence of Virtual Reality and Augmented Reality Display Devices on the Human Nonvisual Characteristics and Melatonin Suppression Response

IEEE Photonics Journal, 2018
It has been elucidated that the responses to light by the human eye influence not only color and brightness recognition but also physiological aspects such as hormones. Melatonin, which affects human circadian rhythms, is sensitive to the blue wavelength
Changwook Kim, Hee Chang Yoon, Dae Hwan Kim, Young Rag Do   +3 more
doaj   +1 more source

Removal of melatonin receptor type 1 signalling induces dyslipidaemia and hormonal changes in mice subjected to environmental circadian disruption

Endocrinology, Diabetes & Metabolism, 2021
Background Melatonin is a hormone secreted by the pineal gland in a circadian rhythmic manner with peak synthesis at night. Melatonin signalling was suggested to play a critical role in metabolism during the circadian disruption.
Cynthia Tchio, Kenkichi Baba, Giuseppe Piccione, Gianluca Tosini   +3 more
doaj   +1 more source

Waking experience modulates sleep need in mice

BMC Biology, 2021
Background Homeostatic regulation of sleep is reflected in the maintenance of a daily balance between sleep and wakefulness. Although numerous internal and external factors can influence sleep, it is unclear whether and to what extent the process that ...
Linus Milinski, Simon P. Fisher, Nanyi Cui, Laura E. McKillop, Cristina Blanco-Duque, Gauri Ang, Tomoko Yamagata, David M. Bannerman, Vladyslav V. Vyazovskiy   +8 more
doaj   +1 more source

The Teensleep study: the effectiveness of a school-based sleep education programme at improving early adolescent sleep

Sleep Medicine: X, 2020
Objective: To evaluate the impact of a school-based sleep education programme on adolescent sleep and sleep knowledge. Methods: This is the first outcome report on ‘Teensleep’: a novel, teacher-led programme, comprising ten lessons that can be delivered ...
Gaby Illingworth, Rachel Sharman, Christopher-James Harvey, Russell G. Foster, Colin A. Espie   +4 more
doaj   +1 more source

Circadian angiogenesis

Biomolecular Concepts, 2014
Abstract Daily rhythms of light/darkness, activity/rest and feeding/fasting are important in human physiology and their disruption (for example by frequent changes between day and night shifts) increases the risk of disease. Many of the diseases found to be associated with such disrupted circadian lifestyles, including cancer ...
Jensen Lasse Dahl, Gyllenhaal Charlotte, Block Keith   +2 more
openaire   +3 more sources

Chronotype and self-reported sleep, alertness, and mental health in U.S. sailors

Military Medical Research, 2021
Service members are at risk for sleep and psychological conditions affecting their readiness. Chronotype (“morningness” or “eveningness”) is strongly associated with sleep, health and performance.
Elizabeth M. Harrison, Alexandra P. Easterling, Emily A. Schmied, Suzanne L. Hurtado, Gena L. Glickman   +4 more
doaj   +1 more source

Association Between Sleep Disturbances With Neurodevelopmental Problems and Decreased Health‐Related Quality of Life in Children With Fontan Circulation

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2021
Background Children with Fontan circulation are known to be at increased risk for neurodevelopmental problems and decreased health‐related quality of life (HRQOL), but many factors that may contribute to this risk are unknown.
Kirstin Knobbe, Meghana Partha, Michael D. Seckeler, Scott Klewer, Chiu‐Hsieh Hsu, Jamie Edgin, Wayne J. Morgan, Natalie Provencio‐Dean, Silvia Lopez, Sairam Parthasarathy, Daniel Combs   +10 more
doaj   +1 more source

The Timing of the Melatonin Onset and Phase Angle to Sleep Onset in Older Adults after Uncontrolled vs. Controlled Lighting Conditions

Clocks & Sleep, 2023
The main aim of this study was to explore how melatonin onset timing and phase angle to bedtime in healthy older adults are impacted by prior light exposure.
Arturo Arrona-Palacios, Jung-Hie Lee, Charles A. Czeisler, Jeanne F. Duffy   +3 more
doaj   +1 more source