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


- candidate number27943
- NTR NumberNTR6712
- ISRCTNISRCTN no longer applicable
- Date ISRCTN created
- date ISRCTN requested
- Date Registered NTR21-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
- 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]
- groupCrossover
- Type2 or more arms, randomized
- Studytypeintervention
- planned startdate 3-okt-2017
- planned closingdate1-okt-2018
- Target number of participants30
- Interventions30 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.
- 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 7 of every measurement period

o Total energy intake: daily
o Snacking frequency: daily
- Trial web site
- statusopen: patient inclusion
- CONTACT FOR PUBLIC QUERIES Wisse P van der Meijden
- CONTACT for SCIENTIFIC QUERIES Wisse P van der Meijden
- Sponsor/Initiator Academic Medical Center
- Funding
(Source(s) of Monetary or Material Support)
Rijksinstituut voor Volksgezondheid en Milieu (RIVM)
- Publications
- Brief summary
- Main changes (audit trail)21-okt-2017 -IK:

Addition in inclusion criteria:
"Frequent screen use"
- RECORD21-sep-2017 - 11-nov-2017


  • Indien u gegevens wilt toevoegen of veranderen, kunt u een mail sturen naar nederlands@trialregister.nl