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Effect of blue light from electronic devices on melatonin and sleep/wake rhythms in high school children


- candidate number27954
- NTR NumberNTR6722
- ISRCTNISRCTN no longer applicable
- Date ISRCTN created
- date ISRCTN requested
- Date Registered NTR26-sep-2017
- Secondary IDsMETC_2016_327 NL59018.018.16
- Public TitleEffect of blue light from electronic devices on melatonin and sleep/wake rhythms in high school children
- Scientific TitleEffect of blue light from electronic devices on melatonin and sleep/wake rhythms in high school children
- ACRONYM
- hypothesis
- Healt Condition(s) or Problem(s) studiedLate sleep phase
- Inclusion criteria Age 11-17
Going to high school
Fluent Dutch speaking
Infrequent screen use
- 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
- mec approval receivedyes
- multicenter trialno
- randomisedyes
- masking/blindingNone
- control[default]
- group[default]
- Type[default]
- Studytypeobservational
- planned startdate 1-okt-2017
- planned closingdate1-okt-2018
- Target number of participants30
- InterventionsThe following parameters will be measured: sleep wake behavior, light exposure, screen use, and melatonin onset.

The 30 infrequent screen users from the present study will be compared to the 30 frequent screen users in the regular screen use condition in study NTR 6712.
- Primary outcomeo Sleep onset time
o Wake-up time
o Mid-sleep time
o Sleep duration
o Melatonin onset
- Secondary outcomeo Total energy intake
o Snacking frequency
- Timepointso Sleep onset time: daily
o Wake-up time: daily
o Mid-sleep time: daily
o Sleep duration: daily
o Melatonin onset: day 6 of every measurement period

o Total energy intake: daily
o Snacking frequency: daily
- Trial web siten/a
- status[default]
- CONTACT FOR PUBLIC QUERIES Wisse P van der Meijden
- CONTACT for SCIENTIFIC QUERIES Wisse P van der Meijden
- Sponsor/Initiator Academic Medical Center (AMC), Amsterdam
- Funding
(Source(s) of Monetary or Material Support)
Rijksinstituut voor Volksgezondheid en Milieu (RIVM)
- Publications
- Brief summary
- Main changes (audit trail)
- RECORD26-sep-2017 - 21-okt-2017


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