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Frontiers in Physiology | Chronobiology section | New and Recent Articles
Circadian system functional status and sleep in blind subjects with and without conscious light perception
To understand circadian rhythms and sleep in an understudied population, which is particularly prone to suffer chronodisruption (CD), eighteen blind volunteers of 51.5 ± 3.6 years (Mean ± SEM) and 26 volunteers (51.8 ± 1.2) with no visual impairme...
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The role of circadian rhythms in the pathogenesis of myopia
Myopia is a complex ocular disorder arising from the interaction of genetic predisposition and environmental cues that regulate eye growth. Increasing evidence indicates that the circadian timing system plays a critical role in ocular development ...
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The effects of total sleep deprivation on the circadian rhythms and psychophysiological factors in military cadets; a comparison between wakefulness in light and darkness
ObjectivesBoth sleep deprivation (SD) and light at night have negative effects on human health and performance. The aim of our work was to compare the intermediate effects of total SD under two lighting conditions: full indoor lighting and darknes...
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Chronic circadian misalignment accelerates sarcopenia progression in mice
IntroductionIn today’s 24/7 society, circadian misalignment caused by environmental and lifestyle factors is associated with various adverse health consequences. Understanding tissue-specific pathology is required to counter this growing public he...
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Maximizing performance in child footballers: chronotype and time of day study
BackgroundA limited number of studies have investigated the effects of circadian rhythm-based running exercise interventions on physical fitness in child athletes. This study aimed to investigate the effects of an eight-week morning and evening ru...
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Sleep behaviors modify the association between hemoglobin concentration and respiratory infection: a prospective cohort analysis
InterpretationHb and respiratory infection showed a nonlinear U-shaped association; such a relation is modified by the chronotype sleep behavior.ObjectiveTo examine the association between Hb and the incidence of hospitalized respiratory infection...
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Knockdown of Mct1 in the arcuate nucleus increases food-anticipatory activity in mice
Animals rely on internal time-keeping mechanisms to anticipate regular events such as feeding, allowing preemptive gene expression which enables timely physiological responses. A manifestation of anticipatory mechanisms is also a rise in body temp...
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The effect of time of day on anaerobic performance and blood lactate response in trained men: assessment in relation to chronotype
This study examined the effects of the time of day on anaerobic performance and blood lactate levels in 20 trained male athletes with intermediate type (IT) and close to evening type (CET) chronotypes. The athletes completed vertical jump and repe...
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