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School Schedules Affect Sleep Timing in Children and Contribute to Partial Sleep Deprivation
Author(s) -
Anacleto Tâmile Stella,
Adamowicz Taísa,
Simões da Costa Pinto Laura,
Louzada Fernando Mazzilli
Publication year - 2014
Publication title -
mind, brain, and education
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.624
H-Index - 35
eISSN - 1751-228X
pISSN - 1751-2271
DOI - 10.1111/mbe.12057
Subject(s) - morning , zeitgeber , sleep (system call) , circadian rhythm , affect (linguistics) , sleep deprivation , psychology , developmental psychology , audiology , actigraphy , rhythm , medicine , demography , circadian clock , neuroscience , communication , computer science , operating system , sociology
Although the environmental light/dark cycle is the main zeitgeber for the human species, the social cues seem to be important in the synchronization of circadian rhythms. In Brazil, the existence of two school schedules—one with only morning classes ( MG ) and other with only afternoon classes ( AG )—allows the investigation of the effect of school activities on light exposure and sleep/wake patterns in children. Forty‐seven children wore wrist actimeters for a week for registration of light and sleep data. MG children presented shorter sleep duration on school days than the children from the AG . The results showed that during school days MG children were exposed to bright light earlier in the morning when compared to AG children. Nevertheless, there were no differences in light exposure after sunset. The results reflect the role of school schedules and artificial light in shaping light exposure, and its association with sleep timing in children.