A longitudinal study of morning, evening, and night light intensities and nocturnal sleep quality in a working population

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

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A longitudinal study of morning, evening, and night light intensities and nocturnal sleep quality in a working population. / Amdisen, Lau; Daugaard, Stine; Vestergaard, Jesper Medom; Vested, Anne; Bonde, Jens Peter; Vistisen, Helene Tilma; Christoffersen, Jens; Garde, Anne Helene; Hansen, Åse Marie; Markvart, Jakob; Schlünssen, Vivi; Kolstad, Henrik Albert.

I: Chronobiology International, Bind 39, Nr. 4, 2022, s. 579-589.

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

Harvard

Amdisen, L, Daugaard, S, Vestergaard, JM, Vested, A, Bonde, JP, Vistisen, HT, Christoffersen, J, Garde, AH, Hansen, ÅM, Markvart, J, Schlünssen, V & Kolstad, HA 2022, 'A longitudinal study of morning, evening, and night light intensities and nocturnal sleep quality in a working population', Chronobiology International, bind 39, nr. 4, s. 579-589. https://doi.org/10.1080/07420528.2021.2010741

APA

Amdisen, L., Daugaard, S., Vestergaard, J. M., Vested, A., Bonde, J. P., Vistisen, H. T., Christoffersen, J., Garde, A. H., Hansen, Å. M., Markvart, J., Schlünssen, V., & Kolstad, H. A. (2022). A longitudinal study of morning, evening, and night light intensities and nocturnal sleep quality in a working population. Chronobiology International, 39(4), 579-589. https://doi.org/10.1080/07420528.2021.2010741

Vancouver

Amdisen L, Daugaard S, Vestergaard JM, Vested A, Bonde JP, Vistisen HT o.a. A longitudinal study of morning, evening, and night light intensities and nocturnal sleep quality in a working population. Chronobiology International. 2022;39(4):579-589. https://doi.org/10.1080/07420528.2021.2010741

Author

Amdisen, Lau ; Daugaard, Stine ; Vestergaard, Jesper Medom ; Vested, Anne ; Bonde, Jens Peter ; Vistisen, Helene Tilma ; Christoffersen, Jens ; Garde, Anne Helene ; Hansen, Åse Marie ; Markvart, Jakob ; Schlünssen, Vivi ; Kolstad, Henrik Albert. / A longitudinal study of morning, evening, and night light intensities and nocturnal sleep quality in a working population. I: Chronobiology International. 2022 ; Bind 39, Nr. 4. s. 579-589.

Bibtex

@article{836b4e55fb8747b49db0921cfdb6bcae,
title = "A longitudinal study of morning, evening, and night light intensities and nocturnal sleep quality in a working population",
abstract = "We aimed to investigate whether higher light intensity in the morning is associated with better nocturnal sleep quality and whether higher light intensities in the evening or night have the opposite effect. Light intensity was recorded for 7 consecutive days across the year among 317 indoor and outdoor daytime workers in Denmark (55–56° N) equipped with a personal light recorder. Participants reported sleep quality after each nocturnal sleep. Sleep quality was measured using three parameters; disturbed sleep index, awakening index, and sleep onset latency. Associations between increasing light intensities and sleep quality were analyzed using mixed effects models with participant identity as a random effect. Overall, neither white nor blue light intensities during morning, evening, or night were associated with sleep quality, awakening, or sleep onset latency of the subsequent nocturnal sleep. However, secondary analyses suggested that artificial light during the morning and day contrary to solar light may increase vulnerability to evening light exposure. Altogether, we were not able to confirm that higher morning light intensity significantly improves self-reported sleep quality or that higher evening or night light intensities impair self-reported sleep quality at exposure levels encountered during daily life in a working population in Denmark. This suggests that light intensities alone are not important for sleep quality to a degree that it is distinguishable from other important parameters in daily life settings.",
author = "Lau Amdisen and Stine Daugaard and Vestergaard, {Jesper Medom} and Anne Vested and Bonde, {Jens Peter} and Vistisen, {Helene Tilma} and Jens Christoffersen and Garde, {Anne Helene} and Hansen, {{\AA}se Marie} and Jakob Markvart and Vivi Schl{\"u}nssen and Kolstad, {Henrik Albert}",
year = "2022",
doi = "10.1080/07420528.2021.2010741",
language = "English",
volume = "39",
pages = "579--589",
journal = "Chronobiology International",
issn = "0742-0528",
publisher = "Taylor & Francis",
number = "4",

}

RIS

TY - JOUR

T1 - A longitudinal study of morning, evening, and night light intensities and nocturnal sleep quality in a working population

AU - Amdisen, Lau

AU - Daugaard, Stine

AU - Vestergaard, Jesper Medom

AU - Vested, Anne

AU - Bonde, Jens Peter

AU - Vistisen, Helene Tilma

AU - Christoffersen, Jens

AU - Garde, Anne Helene

AU - Hansen, Åse Marie

AU - Markvart, Jakob

AU - Schlünssen, Vivi

AU - Kolstad, Henrik Albert

PY - 2022

Y1 - 2022

N2 - We aimed to investigate whether higher light intensity in the morning is associated with better nocturnal sleep quality and whether higher light intensities in the evening or night have the opposite effect. Light intensity was recorded for 7 consecutive days across the year among 317 indoor and outdoor daytime workers in Denmark (55–56° N) equipped with a personal light recorder. Participants reported sleep quality after each nocturnal sleep. Sleep quality was measured using three parameters; disturbed sleep index, awakening index, and sleep onset latency. Associations between increasing light intensities and sleep quality were analyzed using mixed effects models with participant identity as a random effect. Overall, neither white nor blue light intensities during morning, evening, or night were associated with sleep quality, awakening, or sleep onset latency of the subsequent nocturnal sleep. However, secondary analyses suggested that artificial light during the morning and day contrary to solar light may increase vulnerability to evening light exposure. Altogether, we were not able to confirm that higher morning light intensity significantly improves self-reported sleep quality or that higher evening or night light intensities impair self-reported sleep quality at exposure levels encountered during daily life in a working population in Denmark. This suggests that light intensities alone are not important for sleep quality to a degree that it is distinguishable from other important parameters in daily life settings.

AB - We aimed to investigate whether higher light intensity in the morning is associated with better nocturnal sleep quality and whether higher light intensities in the evening or night have the opposite effect. Light intensity was recorded for 7 consecutive days across the year among 317 indoor and outdoor daytime workers in Denmark (55–56° N) equipped with a personal light recorder. Participants reported sleep quality after each nocturnal sleep. Sleep quality was measured using three parameters; disturbed sleep index, awakening index, and sleep onset latency. Associations between increasing light intensities and sleep quality were analyzed using mixed effects models with participant identity as a random effect. Overall, neither white nor blue light intensities during morning, evening, or night were associated with sleep quality, awakening, or sleep onset latency of the subsequent nocturnal sleep. However, secondary analyses suggested that artificial light during the morning and day contrary to solar light may increase vulnerability to evening light exposure. Altogether, we were not able to confirm that higher morning light intensity significantly improves self-reported sleep quality or that higher evening or night light intensities impair self-reported sleep quality at exposure levels encountered during daily life in a working population in Denmark. This suggests that light intensities alone are not important for sleep quality to a degree that it is distinguishable from other important parameters in daily life settings.

U2 - 10.1080/07420528.2021.2010741

DO - 10.1080/07420528.2021.2010741

M3 - Journal article

C2 - 34903140

VL - 39

SP - 579

EP - 589

JO - Chronobiology International

JF - Chronobiology International

SN - 0742-0528

IS - 4

ER -

ID: 287173988