Healthy workers
Conditions
Interventions
None listed
Sponsors
Department of Human Health, Aichi Toho University
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1) Those who generally go to bed around midnight every night. 2) Those with no history of psychiatric disorders, sleep disorders, or circadian rhythm sleep/wake disorders. 3) Those who are at least 20 years old and less than 40 years old at the time of consent. 4) Those who live a lifestyle of working during the day (going to work in the morning and leaving at night) 4 to 6 days a week. 5) Those who use smartphones and other devices until bedtime on a daily basis. 6) Those who own a smartphone or PC and have access to the Internet.
Exclusion criteria
Exclusion criteria: 1) Those who are engaged in shift work, including night shifts and night/early morning work 2) Those who have irregular arrival and departure times (students with unstable school attendance times) 3) Those who work at home (those who are full-time housewives) 4) Those who are currently undergoing treatment for a disease that interferes with their daily life 5) Those who are taking psychotropic drugs, including sleeping pills 6) Those who are unable to discontinue the consumption of alcohol or tobacco during the 14-day research period. 7) Those who plan to stay up excessively late or stay up all night during the 14-day study period. 8) Those who plan to travel during the 14-day study period. 9) Those who are deemed inappropriate by the principal investigator.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Mean median sleep time (midpoint between bedtime and waking time) measured by activity meter during control (days 1-7) and observation (days 8-14) periods. | — |
Countries
Japan
Contacts
Public ContactMichitaka Yoshimura
Aichi Toho University Department of Human Health
Outcome results
None listed