کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3176175 1200249 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Exposure to bright light during evening class hours increases alertness among working college students
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی عصب شناسی
پیش نمایش صفحه اول مقاله
Exposure to bright light during evening class hours increases alertness among working college students
چکیده انگلیسی

ObjectiveTo evaluate the effects of exposure to bright light on sleepiness during evening hours among college students.MethodsTwenty-seven healthy college students, all males, with ages ranging from 21 to 24 years, working during the day and studying in the evening, participated in this study. During the 3 week study, the students wore actigraphs and recorded levels of sleepiness. In a crossover design, on the second and third weeks, the students were exposed to bright light (BL) at either 19:00 or 21:00 h. Salivary melatonin samples were collected before and after BL exposure. ANOVA test for repeated measurements were performed.ResultsAfter BL exposure, sleepiness levels were reduced at 20:30 and 22:00 h (F = 2.2; p < 0.05). ANOVA showed statistical differences between time (F = 4.84; p = 0.04) and between day and time of BL exposure (F = 4.24; p = 0.05). The results showed effects of melatonin onset at 20:00 and 21:30 h and sleepiness levels (F = 7.67; p = 0.02) and perception of sleepiness and intervention time (F = 6.52; p = 0.01).ConclusionControlled exposure to BL during evening hours increased alertness among college students. The effects of BL on sleepiness varied according to the time of melatonin onset.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sleep Medicine - Volume 14, Issue 1, January 2013, Pages 91–97
نویسندگان
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