title: Routine evening naps and night-time sleep patterns in junior high and high school students.
abstract: This study investigated the relationship between napping and night-time sleep patterns in junior high and high school students. A questionnaire concerning sleep-related lifestyle was given to about 10,000 junior high and high school students. Approximately 50% of the junior high and high school students take at least one nap per week. More than 30% of students take naps later than 17.00 hours. The late naps delayed students' bedtime; that is, onset of night-time sleep. The bedtime of students of university-bound high schools was later than that of students of vocation-bound high schools. The more frequently students took naps, the later they went to bed. Frequent late naps delayed bedtime and, hence, shortened the length of night-time sleep.
authors.affiliation: Department of Educational Psychology, Fukushima University, Kanayagawa, Japan. kfukuda@educ.fukushima-u.ac.jp
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Fukuda
authors.forename: Kaneyoshi
authors.initials: K
authors.lastname: Ishihara
mesh_terms: D000293:Adolescent; D002648:Child; D005260:Female; D006184:Habits; D006801:Humans; D008297:Male; D012890:Sleep / Q000502:physiology*; D013334:Students; D013995:Time