0245 Relationship of Chronotype with Sleep Duration, Daytime Sleepiness, and Sustained Attention in High School Students: A Pilot Study

Abstract Introduction People with a later chronotype typically sleep later and perform better later in the day. In an early high school schedule, students with later chronotypes earn lower average grades than those with earlier chronotypes. However, other effects of late chronotype on high school st...

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Bibliographic Details
Published in:Sleep (New York, N.Y.) N.Y.), 2020-05, Vol.43 (Supplement_1), p.A94-A94
Main Authors: Morrison, S W, Scheer, F A, Mason, I C
Format: Article
Language:English
Subjects:
Attention
Extracurricular activities
School schedules
Secondary school students
Secondary schools
Sleep deprivation
Workloads
Online Access:Get full text
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Summary:Abstract Introduction People with a later chronotype typically sleep later and perform better later in the day. In an early high school schedule, students with later chronotypes earn lower average grades than those with earlier chronotypes. However, other effects of late chronotype on high school students are poorly understood. This study examined the relationship of chronotype with sleep duration, daytime sleepiness and sustained attention in high school students. Methods This study was conducted at Byram Hills High School in Armonk, NY, where classes begin at 7:45am. During three class periods, 36 participants (female n=24, n=12, 14–17 years old) completed the Morning-Eveningness Questionnaire (MEQ), Karolinska Sleepiness Scale (KSS), and Psychomotor Vigilance Test (PVT) during their class. Subjects recorded time spent on homework/extracurricular activities and bedtime/waketime from the night prior to the assessment. Results Later chronotype (lower MEQ score) was significantly associated with later bedtime, shorter sleep duration, and increased sleepiness (r=-0.82, p
ISSN:0161-8105
1550-9109
DOI:10.1093/sleep/zsaa056.243