OBJECTIVE This study examined whether anesthesia residents (physicians in training) performed clinical duties in the operating room differently during the day versus at night. BACKGROUND Fatigue from sleep deprivation and working through the night is common for physicians, particularly during residency training. METHODS Using a repeated-measures design, we studied 13 pairs of day-night matc...

This study aimed to investigate, through functional MRI (fMRI), the neuronal substrates associated with the consolidation process of two motor skills: motor sequence learning (MSL) and motor adaptation (MA). Four groups of young healthy individuals were assigned to either (i) a night/sleep condition, in which they were scanned while practicing a finger sequence learning task or an eight-target ...

research has shown that shift work, in particular night work, can have negative effects on the health, safety and well-being of workers. our study assessed, in a hospital setting, the effects of bright light (bl) on general health and psychological problems during night shift work. in an experimental design, 15 female nurses at a general hospital that located in tehran were exposed to moderate ...

Enter motherhood I was elated, apprehensive, and exhausted when I arrived home with my first baby, Sarah. I also had a mission: I wanted to breastfeed. I had read The Canadian Mother and Child1 and every available book on breastfeeding. I believed that if I were to bottle feed my baby, it would be a failure—my failure as a mother and a woman. When we came through the door of our apartment my mo...

Too much sitting, and both short and long sleep duration are associated with obesity, but little is known on the nature of the relations between these behaviours. We therefore examined the associations between sleep duration and time spent sitting in adults across five urban regions in Europe. We used cross-sectional survey data from 6,037 adults (mean age 51.9 years (SD 16.4), 44.0% men) to as...

Fear of the dark is a common complaint of pre-teenage children. 2 It should not be confused with night terrors or panics, in which a child becomes acutely agitated and terror-struck at night, appearing to be awake while in fact asleep and unable to be woken. 4 In contrast, fear of the dark can be experienced by the conscious child in dimly lit or dark conditions. When such fear is excessive it ...

Circadian blood pressure changes are blunted in patients with chronic kidney disease (CKD). Proteinuria is the most important correlate of hypertension in CKD. However, little is known about the influence of circadian blood pressure changes and variation in protein excretion rate. Furthermore, the impact of blood pressure components, e.g., mean arterial pressure and pulse pressure, on proteinur...

1. Mucociliary clearance has been measured over a 6 h period by using the radioaerosol technique in seven normal male subjects lying supine, both during the day when awake, and during the night when asleep. 2. The percentage of radioaerosol cleared during the night, when asleep, was significantly less than during the day when awake (P less than 0.02). 3. A comparison of radioaerosol clearance b...

OBJECTIVE Absence of a late-night cortisol nadir is a consistent biochemical abnormality in patients with cortisol-producing adenoma. We evaluated the abnormality of late-night urinary free cortisol to creatinine ratio (late-night UFCCR) in patients with subclinical Cushing's syndrome (SCS). METHODS Fifty-eight patients with incidentally detected adrenocortical adenomas [SCS: 9; nonfunctionin...