dc.contributor.author | Sunde, Erlend | |
dc.contributor.author | Pedersen, Torhild | |
dc.contributor.author | Mrdalj, Jelena | |
dc.contributor.author | Thun, Eirunn | |
dc.contributor.author | Grønli, Janne | |
dc.contributor.author | Harris, Anette | |
dc.contributor.author | Bjorvatn, Bjørn | |
dc.contributor.author | Waage, Siri | |
dc.contributor.author | Skene, Debra J. | |
dc.contributor.author | Pallesen, Ståle | |
dc.date.accessioned | 2021-03-03T08:07:24Z | |
dc.date.available | 2021-03-03T08:07:24Z | |
dc.date.created | 2021-01-20T15:04:38Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 2624-5175 | |
dc.identifier.uri | https://hdl.handle.net/11250/2731298 | |
dc.description.abstract | Light can be used to facilitate alertness, task performance and circadian adaptation during night work. Novel strategies for illumination of workplaces, using ceiling mounted LED-luminaires, allow the use of a range of different light conditions, altering intensity and spectral composition. This study (ClinicalTrials.gov Identifier NCT03203538) investigated the effects of short-wavelength narrow-bandwidth light (λmax = 455 nm) compared to long-wavelength narrow-bandwidth light (λmax = 625 nm), with similar photon density (~2.8 × 1014 photons/cm2/s) across light conditions, during a simulated night shift (23:00–06:45 h) when conducting cognitive performance tasks. Light conditions were administered by ceiling mounted LED-luminaires. Using a within-subjects repeated measurements study design, a total of 34 healthy young adults (27 females and 7 males; mean age = 21.6 years, SD = 2.0 years) participated. The results revealed significantly reduced sleepiness and improved task performance during the night shift with short-wavelength light compared to long-wavelength light. There was also a larger shift of the melatonin rhythm (phase delay) after working a night shift in short-wavelength light compared to long-wavelength light. Participants’ visual comfort was rated as better in the short-wavelength light than the long-wavelength light. Ceiling mounted LED-luminaires may be feasible to use in real workplaces, as these have the potential to provide light conditions that are favorable for alertness and performance among night workers. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | MDPI | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Alerting and Circadian Effects of Short-Wavelength vs. Long-Wavelength Narrow-Bandwidth Light during a Simulated Night Shift | en_US |
dc.type | Journal article | en_US |
dc.type | Peer reviewed | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | Copyright 2020 The Authors | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |
dc.identifier.doi | 10.3390/clockssleep2040037 | |
dc.identifier.cristin | 1875700 | |
dc.source.journal | Clocks & Sleep | en_US |
dc.source.pagenumber | 502-522 | en_US |
dc.identifier.citation | Clocks & Sleep, 2020, 2 (4), 502-522 | en_US |
dc.source.volume | 2 | en_US |
dc.source.issue | 4 | en_US |