Predisposing factors in delayed sleep phase syndrome

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منابع مشابه

Melatonin rhythms in delayed sleep phase syndrome.

The aim of this study was to compare circadian and sleep characteristics between patients with delayed sleep phase syndrome (DSPS) and healthy controls. The authors studied 8 DSPS patients and 15 normal controls. Serum melatonin concentration was assessed every hour for 24 h under dim light conditions. The sleep phase and the melatonin rhythm in DSPS patients were significantly delayed compared...

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Phase-dependent treatment of delayed sleep phase syndrome with melatonin.

STUDY OBJECTIVE Delayed sleep phase syndrome (DSPS) is a circadian-rhythm sleep disorder characterized by abnormally late sleep and wake times. Melatonin, taken in the evening, advances sleep and circadian phase in patients with DSPS. However, little is known about the most effective dose or time of administration. In the present study, we tested the effectiveness of melatonin to advance the ti...

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Predisposing factors of sleep-disordered breathing in Japanese male workers.

The aim of this study was to elucidate the usable predisposing factors of sleep-disordered breathing (SDB) in the workplace. A total of 353 male workers who complained of SDB related symptoms such as witnessed snoring, recurrent awakening from sleep, urination during the night, morning headache, and excessive daytime sleepiness were included in the analysis. We examined hyoid-mental distance (H...

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Phase-shifting effects of bright morning light as treatment for delayed sleep phase syndrome.

Bright light has recently been shown to have phase-shifting effects on human circadian rhythms. In this study we applied this effect to 20 patients with delayed sleep phase syndrome (DSPS) who were unable to fall asleep at conventional clock times and had a problem staying alert in the morning. In a controlled treatment study, we found that 2 h of bright light exposure in the morning together w...

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ژورنال

عنوان ژورنال: Psychiatry and Clinical Neurosciences

سال: 2000

ISSN: 1323-1316,1440-1819

DOI: 10.1046/j.1440-1819.2000.00713.x