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...

background variations in diurnal preferences for activity and sleep are classified as morning and evening chronotypes. morning and evening-type individuals differ regarding a number of psychological and biological variables such as sleep. objectives the current study aimed to investigate the relationship between chronotypes and sleep quality. patients and methods in this descriptive, correlatio...

background: temporal variation of stroke onset is suggested in some studies contained somewhat varieties. it is proposed that some predisposing changes occur in some ascertained times consequently resulted in stroke occurrence in some special times. objective: to determine the circadian and circaseptan variation of stroke onset. materials and methods: this cross sectional study was conducted fr...

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conclusions the current study revealed that the iranian nurses are exposed to a considerable risk of personal accomplishment. also, job burnout is in association with shift working and low job satisfaction level. in this regard, working pressure, type of job and income may affect job burnout. ergonomic interventional programs are recommended to improve the working conditions. methods this cross...

asthma  is a clinical syndrome  characterized by chronic  airway inflammation, airway responsiveness, and expiratory airflow limitation. nocturnal symptoms and decreases in lung function are common aspects of the asthma clinical syndrome. nocturnal symptoms also appear to be associated with asthma-related mortality. in addition to its importance to the regulation of human circadian rhythms, an ...

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...

background: this paper investigated the effect of daylight on morning and night melatonin, subjective general health using ghq questionnaire, sleepiness and alertness on elderly who lived in nursing houses. methods: nineteen nursing home residents participated voluntarily. they exposed to daylight from 9 to 10 a.m. and from 4 to 5 p.m. for 6 wk. the level of melatonin in the morning and at nigh...