None listed
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1) Boys and girls enrolled in grades 4 through 9 (elementary grade 4 to junior high grade 3) 2) Children and students attending public elementary or junior high schools in the city
Exclusion criteria
Exclusion criteria: 1) Children and students enrolled in special needs schools 2) Schools or classes where consent for participation could not be obtained 3) Schools or classes deemed unsuitable for study implementation
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The change in the proportion of students who meet the recommended sleep duration according to the 2023 Japanese Sleep Guidelines for Health Promotion (i.e., 9 hours or more per night for elementary school children and 8 hours or more per night for junior high school students) on weekdays, assessed at baseline (pre-intervention) and at the end of the intervention (12 months post-intervention), and compared between the intervention and control groups. | — |
Secondary
| Measure | Time frame |
|---|---|
| 1) Proportion of students whose bedtime is advanced by at least 15 minutes from baseline 2) Proportion of students whose total weekday sleep duration increases by at least 105 minutes per week from baseline 3) Proportion of students whose difference in sleep timing between weekdays and weekends (social jetlag, SJL) is within 60 minutes 4) Changes in subjective fatigue, assessed using a short fatigue scale validated for Japanese elementary and junior high school students (the scale name is not specified; the items used and reference will be disclosed in the study protocol) 5) Changes in daytime sleepiness, assessed using the Pediatric Daytime Sleepiness Scale (PDSS), including both changes in total scores and the proportion of students above or below the cutoff value 6) Changes in subjective mental well-being, assessed using the WHO-5 Well-Being Index, including both changes in total scores and the proportion of students above or below the cutoff value 7) Changes in sleep-related behaviors, assessed using a behavior change stage model developed for this study based on previous research frameworks | — |
Countries
Japan
Contacts
Hiroshima University Graduate School of Humanities and Social Sciences