Morning‐Evening Preference: Sleep Pattern Spectrum and Lifestyle Habits Among Japanese Junior High School Pupils
- 1 January 2006
- journal article
- Published by Taylor & Francis Ltd in Chronobiology International
- Vol. 23 (3), 607-621
- https://doi.org/10.1080/07420520600650646
Abstract
We surveyed the sleep-wake patterns and lifestyle habits in a sample of Japanese first to third year junior high school children (n=638, age 12 to 15 yrs), of whom 29.3% were evening type, 64.1% intermediate type, and 6.6% morning type in preference. The morningness-eveningness (M-E) score was lower (more evening typed), 16.1 vs. 15.4 in first compared to third year students. There were significant gender differences, with girls showing a greater evening preference. Evening preference was associated with longer sleep latency, shortened sleep duration during schooldays and weekends, bad morning feeling, and episodes of daytime sleepiness. In contrast, morning preference was associated with higher sleep drive and better sleep-wake parameters and lifestyle habits. Our results suggest the morning preference should be promoted among junior high school children to increase the likelihood of more regular sleep-wake patterns and lifestyle habits.Keywords
This publication has 36 references indexed in Scilit:
- Health-related Quality of Life and Depressive Symptoms in Children with Suspected Sleep-Disordered BreathingSleep, 2004
- Novelty seekers and impulsive subjects are low in morningnessEuropean Psychiatry, 2004
- Decreased Quality of Life Associated With Obesity in School-aged ChildrenArchives of Pediatrics & Adolescent Medicine, 2003
- GENDER DIFFERENCES IN MORNINGNESS–EVENINGNESS PREFERENCEChronobiology International, 2002
- Association of intrinsic circadian period with morningness–eveningness, usual wake time, and circadian phase.Behavioral Neuroscience, 2001
- CIRCADIAN RHYTHMICITY OF CORTISOL AND BODY TEMPERATURE: MORNINGNESS-EVENINGNESS EFFECTSChronobiology International, 2001
- Adolescent Sleep Patterns, Circadian Timing, and Sleepiness at a Transition to Early School DaysSleep, 1998
- Association between Puberty and Delayed Phase PreferenceSleep, 1993
- The effects of depression and age on the Horne-Ostberg morningness-eveningness scoreJournal of Affective Disorders, 1991
- Circadian Rhythms in ManScience, 1965