Sleep Med Psychophysiol.  2012 Dec;19(2):89-96.

Eveningness, Sleep Patterns, Daytime Sleepiness and Fatigue in Korean Male Adolescents

• Kang SH
• Yoo HK
• Chung S
• Kim CY

Abstract

OBJECTIVES
Individuals differ in their biological rhythms. This study investigated the association between the morningness-eveningness and sleep patterns, daytime sleepiness and fatigue in Korean male adolescents.
METHODS
Participants were 501 eleventh grade male students (16.9+/-0.2 years of age) in one male high school in Seoul. Each student completed the Korean translation of composite scale (KtCS), Epworth sleepiness scale (ESS), Fatigue Severity Scale (FSS) and a questionnaire about their sleep schedule.
RESULTS
The evening group had shorter weekday sleep time than the intermediate (p<0.001) or morning group (p=0.029). The evening group had more daytime napping (16.8%, p<0.001), high rate of caffeine use (58.8%, p<0.001) and snoring (18.5%, p=0.037). The evening group showed more daytime sleepiness (8.7, SD=3.2, p<0.001) and severe fatigue (4.4, SD=1.2, p<0.001) than the intermediate or morning group.
CONCLUSION
Adolescents with eveningness have higher problems in weekday sleep, daytime sleepiness and fatigue. An intervention program for sleep problem in these adolescents should be considered.

Keyword

Adolescent; Eveningness; Daytime sleepiness; Fatigue

MeSH Terms

Adolescent
Caffeine
Fatigue
Humans
Male
Surveys and Questionnaires
Snoring
Caffeine