Sleep log-based education and entrainment program for social jetlag in school-aged children and adolescents (SLEEP-Jet)

Effect of a sleep log-based educational program on reducing social jetlag among school-aged children and adolescents: a cluster intervention trial (SLEEP-Jet) - SLEEP-Jet

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000058532

Enrollment

800

Registered

2025-07-21

Start date

2025-02-14

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Interventions

Intervention group Description: A 60-minute school-based sleep education program (including a quiz-based knowledge session and guidance on healthy sleep habits) will be delivered to students in gr

s average bedtime, wake-up time, and sleep duration (displayed as graphs and figures) based on their pre-intervention sleep diary data Based on the feedback sheet, students will be instructed to set

Eligibility

Sex/Gender

All

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

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
Change in social jetlag (SJL) from baseline to 2 weeks after the intervention	—

Secondary

Measure	Time frame
Change in bedtime and wake-up time on weekdays and weekends Change in sleep duration on weekdays and weekends Change in electronic media usage time after 4:00 p.m. Change in the proportion of students achieving the recommended sleep duration (>=9 hours for elementary school students, >=8 hours for junior high school students) Change in subjective symptom scores (sleepiness, instability, discomfort, fatigue)	—

Measure

Time frame

Change in bedtime and wake-up time on weekdays and weekends Change in sleep duration on weekdays and weekends Change in electronic media usage time after 4:00 p.m. Change in the proportion of students achieving the recommended sleep duration (>=9 hours for elementary school students, >=8 hours for junior high school students) Change in subjective symptom scores (sleepiness, instability, discomfort, fatigue)

—

Countries

Japan

Contacts

Public ContactNorihisa Tamura

Hiroshima University Graduate School of Humanities and Social Sciences

tamura65@hiroshima-u.ac.jp0824246803

Outcome results