نتایج جستجو برای: circadian variation
تعداد نتایج: 319046 فیلتر نتایج به سال:
results linear mixed model analyses showed that athletes slept on average 43 minutes longer when they slept during usual (night) times than during abnormal (day) times. in general, sleep duration decreased during the race with on average 18 minutes per period. conclusions this pilot study shows that, even under extreme violation of sleep hygiene rules, there still is an apparent effect of circa...
The onset of myocardial infarction occurs frequently in the early morning, and it may partly result from circadian variation of fibrinolytic activity. Plasminogen activator inhibitor-1 activity shows a circadian oscillation and may account for the morning onset of myocardial infarction. However, the molecular mechanisms regulating this circadian oscillation remain unknown. Recent evidence indic...
RATIONALE Four monocentric studies reported that circadian rhythms can affect left ventricular infarct size after ST-segment-elevation acute myocardial infarction (STEMI). OBJECTIVE To further validate the circadian dependence of infarct size after STEMI in a multicentric and multiethnic population. METHODS AND RESULTS We analyzed a prospective cohort of subjects with first STEMI from the F...
Circadian oscillators provide rhythmic temporal cues for a range of biological processes in plants and animals, enabling anticipation of the day/night cycle and enhancing fitness-associated traits. We have used engineering models to understand the control principles of a plant's response to seasonal variation. We show that the seasonal changes in the timing of circadian outputs require light re...
conclusions it seems that the incidence of different types of stroke-induced aphasia in ahvaz is influenced by the calendar-temporal changes. according to the findings, to prevent the occurrence of stroke-induced aphasia, necessary counseling should be provided for lifestyle changes. results according to the obtained results 39.9% of the studied patients had a stroke-induced aphasia. the highes...
Our sleep timing preference, or chronotype, is a manifestation of our internal biological clock. Variation in chronotype has been linked to sleep disorders, cognitive and physical performance, and chronic disease. Here we perform a genome-wide association study of self-reported chronotype within the UK Biobank cohort (n=100,420). We identify 12 new genetic loci that implicate known components o...
Circadian changes in mood have been described earlier. A positive affect (PA) has been separated from a negative affect (NA), as independent components in opposite admittedly subjective directions, a circadian rhythm characterizing both aspects. Herein, the time structure (chronome) of human mood is re-examined and extended from the circadian to the circaseptan domain by a meta-analysis of data...
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