Late sleep phase
Conditions
Interventions
30 frequent users will be assessed in 3 conditions: 1) habitual screen use
2) habitual screen use with blue-light blockers
and 3) abstinence of screen use. We will assess sleep wake behavior, light exposure, screen use, and melatonin onset.
Sponsors
Dr. P.H.L.T Bisschop
Academic Medical Center
University of Amsterdam
Eligibility
Inclusion criteria
Inclusion criteria: • Age 11-17 • Going to high school • Fluent Dutch speaking • Frequent screen use
Exclusion criteria
Exclusion criteria: • Ocular pathology / color deficiency • The necessity to wear glasses (and no opportunity to wear contact lenses) • Use of medication known to affect sleep or the central nervous system • Alcohol use >1 glass per day • Caffeine use > 2 cups per day • Other substance use • Psychiatric, neurological or physical disorder affecting sleep-wake behavior
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| oSleep onset time oWake-up time oMid-sleep time oSleep duration oMelatonin onset | — |
Secondary
| Measure | Time frame |
|---|---|
| o Total energy intake o Snacking frequency | — |
Contacts
Public ContactWisse P van der Meijden
Netherlands Institute for Neuroscience, Department Sleep & Cognition
Outcome results
None listed