Cited by 131Circadian rhythm and melatoninBuilding Energy and Comfort OptimizationSleep and Work-Related Fatigue

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Office lighting and personal light exposures in two seasons: Impact on sleep and mood

Figueiro, MG, Rea, MS·2016·Lighting Research & Technology

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Abstract

Lighting design for office buildings has focused largely on providing sufficient light for visual performance, minimal glare, good colour rendering and energy conservation. Little attention has been given to understanding how light affects the non-visual systems, including circadian regulation that affects sleep and mood. Circadian light–dark and activity–rest patterns of individuals working in a building designed to provide daylight availability in the space were obtained in winter and summer. Measures of objective and subjective sleep and self-reports of mood were also obtained from participants. Results show a significant increase in light exposure during summer. Sleep quantity and quality were also significantly higher in summer than in winter. Strategies to increase circadian light exposures in buildings should be a consideration in architectural design.

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Research works printed but not linked: 2

Figueiro MG, Rea MS, Stevens RG, Rea AC. Daylight and productivity: A possible link to circadian regulation: Light and Human Health: EPRI/LRO 5th International Lighting Research Symposium, Electric Power Research Institute Lighting Research Office , Palo Alto, CA, USA, 2002, pp. 185–193.
Rea MS, 2008, ASHRAE IAQ Applications, 9, 20

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“Fully adjusted models additionally accounted for maternal education (low/high), weekend night (yes/no) and season (April – September/October – March) in which the measurements were done, due to previous observations of higher sleep quality during summer than winter (Figueiro & Rea, 2016).”
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“…resorted to when prospectively evaluating the impact of lighting and/or architectural design strategies, and office and health care environments are of particular interest here due to the amount of time occupants spend in these spaces during waking hours (Boyce, 2010; Figueiro & Rea 2016;).”
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“Given that optimal thresholds must be known to work with, the e ﬀ ect of light on the circadian system by setting optimal CS values has already been assessed in works like (Figueiro et al., 2014; Figueiro & Rea, 2016).”
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“Given that optimal thresholds must be known in order to work with CS, the effect of light on the circadian system by setting optimal CS values has already been assessed in several studies (Figueiro et al. 2014; Figueiro and Rea 2016).”
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Authors: Figueiro, M., & Rea, M.
Affiliations: Lighting Research Center, Rensselaer Polytechnic Institute, Troy, NY, USA
Venue: Lighting Research & Technology
Publisher: SAGE Publications
Published: 2014-12-19
Volume: 48
Issue: 3
Pages: 352-364
ISSN: 0024-3426 (ISSN-L)
1477-1535
1477-0938
DOI: 10.1177/1477153514564098
OpenAlex: W2328375817
Cited by: 131
References: 37
Citations by year: 2026: 4 · 2025: 13 · 2024: 13 · 2023: 17 · 2022: 12 · 2021: 24 · 2020: 13 · 2019: 18 · 2018: 7 · 2017: 3 · 2016: 3 · 2015: 2
FWCI: 1.30
Type: journal article
Language: en
Open access: closed
Licence: journals.sagepub.com/page/policies/text-and-data-mining-license (tdm)
Locations: Lighting Research & Technology (publishedVersion)
Topics: Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
Physical Sciences › Engineering › Building and Construction › Building Energy and Comfort Optimization
Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
Keywords: office lighting, circadian lighting, non-visual effects of light, sleep quality, mood, seasonal variation, daylight availability, circadian rhythm, architectural lighting design, visual comfort

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Office lighting and personal light exposures in two seasons: Impact on sleep and mood

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