کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3026644 1182915 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Extreme late chronotypes and social jetlag challenged by Antarctic conditions in a population of university students from Uruguay
ترجمه فارسی عنوان
چرخه های دشواری دشوار و اجتماعی جت لگ تحت شرایط قطب جنوب در جمعیت دانشجویان دانشگاه اروگوئه به چالش کشیده می شود
کلمات کلیدی
ریتم های دورانی، عادت های خواب، پرسشنامه کرونوتایپ مونیخ، قطب جنوب، آرتیگاس پایگاه علمی قطب جنوب اوروگوئه
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
چکیده انگلیسی

In humans, a person’s chronotype depends on environmental cues and on individual characteristics, with late chronotypes prevailing in youth. Social jetlag (SJL), the misalignment between an individual׳s biological clock and social time, is higher in late chronotypes. Strong SJL is expected in Uruguayan university students with morning class schedules and very late entertainment activities. Sleep disorders have been reported in Antarctic inhabitants, that might be a response to the extreme environment or to the strictness of Antarctic life. We evaluated, for the first time in Uruguay, the chronotypes and SJL of 17 undergraduate students of the First Uruguayan Summer School on Antarctic Research, using Munich Chronotype Questionnaire (MCTQ) and sleep logs (SL) recorded during 3 phases: pre-Antarctic, Antarctic, and post-Antarctic. The midsleep point of free days corrected for sleep debt on work days (MSFsc,) was used as proxy of individuals’ chronotype, whose values (around 6 a.m.) are the latest ever reported. We found a SJL of around 2 h in average, which correlated positively with MSFsc, confirming that late chronotypes generate a higher sleep debt during weekdays. Midsleep point and sleep duration significantly decreased between pre-Antarctic and Antarctic phases, and sleep duration rebounded to significant higher values in the post-Antarctic phase. Waking time, but not sleep onset time, significantly varied among phases. This evidence suggests that sleep schedules more likely depended on the social agenda than on the environmental light–dark shifts. High motivation of students towards Antarctic activities likely induced a subjective perception of welfare non-dependent on sleep duration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sleep Science - Volume 9, Issue 1, January–March 2016, Pages 20–28
نویسندگان
, , , , ,