Results 51 to 60 of about 9,135 (208)
Acute intermittent hypercapnic hypoxia augments left ventricular contractility
The Journal of Physiology, EarlyView.Abstract figure legend Twenty‐four healthy adults were studied to determine the effects of an acute session of 40 min of intermittent hypercapnic hypoxia on cardiac performance. Cardiac function was assessed via echocardiography at rest and during graded stages of lower‐body negative pressure before and after the intervention to quantify load ...
Scott F. Thrall +8 more
wiley +1 more source
Daily rhythm in DNA methylation and the effect of total sleep deprivation
Journal of Sleep Research, Volume 34, Issue 4, August 2025.Summary Numerous hormones and genes exhibit diurnal 24‐hr rhythms that can also be affected by sleep deprivation. Here we studied diurnal rhythms in DNA methylation under a 24‐hr sleep/wake cycle and a subsequent 29 hr of continual wakefulness (1 night of sleep deprivation).
Antti‐Jussi Ämmälä +9 more
wiley +1 more source
Health Promotion Journal of Australia, Volume 36, Issue 3, July 2025.ABSTRACT Sufficient sleep is a basic right, vital for functioning and wellbeing. Socioecological disparities in sleep status are increasingly highlighted. However, broader social and cultural factors, including beliefs and practicalities of sleep, are seldom considered.
Rosemary Gibson
wiley +1 more source
The Journal of Headache and Pain, 2000 Recent years have seen exciting advances in the understanding of the mechanisms that underlie circadian rhythms in a variety of organisms, including mammals. Several key genes have been identified, whose products can be considered to represent bone fide clock molecules.
openaire +1 more source
Imaging Multidimensional Therapeutically Relevant Circadian Relationships
International Journal of Biomedical Imaging, 2009 Circadian clocks gate cellular proliferation and, thereby, therapeutically target availability within proliferative pathways. This temporal coordination occurs within both cancerous and noncancerous proliferating tissues.
Jamil Singletary +6 more
doaj +1 more source
Nudging Tactics for Enhanced Compliance With Condition‐Based Maintenance Guidelines
Journal of Operations Management, Volume 71, Issue 5, Page 700-724, July 2025.ABSTRACT Condition‐based preventive maintenance (CB‐PM), dependent on robust and precise indicators of equipment quality, stands to gain advantages from the integration of sensor technologies. Yet, the effectiveness of such systems relies on an important factor: people.
Mateus do Rego Ferreira Lima +3 more
wiley +1 more source
Chronobiology and Mood Disorders [PDF]
Psikiyatride Güncel Yaklaşımlar, 2011 Living organizms show cyclic rhythmicity in a variety of physiological, hormonal, behavioral, and psychological processes. Sleep-wake cycles, body temperature, hormone levels, mood and cognition display a circadian rhythm in humans.
Yavuz Selvi +2 more
doaj
Coupling governs entrainment range of circadian clocks
Molecular Systems Biology, 2010 Circadian clocks are endogenous oscillators driving daily rhythms in physiology and behavior. Synchronization of these timers to environmental light–dark cycles (‘entrainment’) is crucial for an organism's fitness.
Ute Abraham +5 more
doaj +1 more source
RUDN Journal of Medicine, 2014 The book presents the results, long-term monitoring of physiological parameters of the human body and heliophysical factors. The authors examine the history of the development of chronobiology from the antique times to our time, in more detail stopping ...
S A Shastun, S I Rapoport
doaj
Gut MicrobesCircadian organization is involved in many gastrointestinal tract (GIT) functions such as the maintenance of intestinal barrier integrity. There is compelling evidence that perturbation of the circadian clock decreases intestinal epithelial cells ...
Laura Tran +15 more
doaj +1 more source