Benefits and Risks of Artificial Light Exposure: Characterisation of Effects on Alertness, Sleep, Cognitive Performance, Mood and Biological Rhythms
NCT ID: NCT05232383
Last Updated: 2025-08-08
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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RECRUITING
NA
96 participants
INTERVENTIONAL
2021-12-02
2026-05-01
Brief Summary
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
BASIC_SCIENCE
NONE
Study Groups
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Wp
polychromatic light
Application of polychromatic light at different times of day
Wn
polychromatic light
Application of polychromatic light for 2h30 at different times of day with sleep
Gn
green light
Application of green light at different times of day with sleep
Gp
green light
Application of green light at different times of day
Rp
red light
Application of red light at different times of day
Rn
red light
Application of red light at different times of day with sleep
Interventions
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polychromatic light
Application of polychromatic light at different times of day
polychromatic light
Application of polychromatic light for 2h30 at different times of day with sleep
red light
Application of red light at different times of day
red light
Application of red light at different times of day with sleep
green light
Application of green light at different times of day
green light
Application of green light at different times of day with sleep
Eligibility Criteria
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Inclusion Criteria
* Aged 18 to 40 years
* With a hint of Bodymass index (BMI) between 17 and 30 kg.m - 2
* healthy subject determined by a clinical examination, a psychological interview, a blood test, a urine analysis
* Subject with a score\<6 questionnaire PSQI ("Sleep Questionnaire Pittsburgh")
* Subject agreeing to maintain a regular sleep/wake rhythm during the study
* Subject agreeing to refrain from caffeine, nicotine, alcohol, psychotropic drugs, cannabis or other drugs, during the study
* Signed informed consent
* Subjectaffiliated to a social protection scheme
Exclusion Criteria
* immune system diseases
* kidneys and urinary tract diseases
* endocrine and metabolic diseases
* neurological diseases
* infectious diseases
* thrombocytopenia or other malfunction of blood platelets
* Subject with risk of thrombosis, including subject with a history of phlebitis, smoker under oral contraceptive...
* Subject with an addiction to caffeine, nicotine, alcohol, psychotropic drugs, cannabis, or any other drug
* Subject treatment contraindicated or inadvisable in combination with heparin
* blood donation in the previous 3 months before the inclusion
* Participation in other clinical trials
* Work by shifts in the year preceding the inclusion
* Trans-meridian travel (\> 2 time zones) in the month previous the inclusion
* Impossibility to give enlightened information (subject in an emergency situation, understanding difficulties,...)
* Subject under safeguard of justice
* Subject under tutorship or curatorship
* Pregnancy (women of childbearing age)
* Breastfeeding
* Diet incompatible with the study's snack choices
18 Years
40 Years
ALL
Yes
Sponsors
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University Hospital, Strasbourg, France
OTHER
Responsible Party
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Principal Investigators
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Patrice BOURGIN, MD
Role: PRINCIPAL_INVESTIGATOR
Hôpitaux Universitaires de Strasbourg
Locations
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Hôpitaux Universitaires de Strasbourg
Strasbourg, , France
Countries
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Central Contacts
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Facility Contacts
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Other Identifiers
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8076
Identifier Type: -
Identifier Source: org_study_id
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