| Records |
| Author |
Daugaard, S.; Markvart, J.; Bonde, J.P.; Christoffersen, J.; Garde, A.H.; Hansen, A.M.; Schlunssen, V.; Vestergaard, J.M.; Vistisen, H.T.; Kolstad, H.A. |
| Title |
Light Exposure during Days with Night, Outdoor, and Indoor Work |
Type |
Journal Article |
| Year |
2019 |
Publication  |
Annals of Work Exposures and Health |
Abbreviated Journal |
Ann Work Expo Health |
| Volume |
in press |
Issue |
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Pages |
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| Keywords |
Human Health |
| Abstract |
OBJECTIVE: To assess light exposure during days with indoor, outdoor, and night work and days off work. METHODS: Light intensity was continuously recorded for 7 days across the year among indoor (n = 170), outdoor (n = 151), and night workers (n = 188) in Denmark (55-56 degrees N) equipped with a personal light recorder. White light intensity, duration above 80, 1000, and 2500 lux, and proportion of red, green, and blue light was depicted by time of the day and season for work days and days off work. RESULTS: Indoor workers' average light exposure only intermittently exceeded 1000 lux during daytime working hours in summer and never in winter. During daytime working hours, most outdoor workers exceeded 2500 lux in summer and 1000 lux in winter. Night workers spent on average 10-50 min >80 lux when working night shifts. During days off work, indoor and night workers were exposed to higher light intensities than during work days and few differences were seen between indoor, outdoor, and night workers. The spectral composition of light was similar for indoor, outdoor, and night workers during days at and off work. CONCLUSION: The night workers of this study were during night hours on average exposed for a limited time to light intensities expected to suppress melatonin. The indoor workers were exposed to light levels during daylight hours that may reduce general well-being and mood, especially in winter. Outdoor workers were during summer daylight hours exposed to light levels comparable to those used for the treatment of depression. |
| Address |
Department of Occupational Medicine, Danish Ramazinni Centre, Aarhus University Hospital, 8200 Aarhus, Denmark |
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| Language |
English |
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| ISSN |
2398-7308 |
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| Notes |
PMID:30865270 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2268 |
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| Author |
Cherrie, J.W. |
| Title |
Shedding Light on the Association between Night Work and Breast Cancer |
Type |
Journal Article |
| Year |
2019 |
Publication |
Annals of Work Exposures and Health |
Abbreviated Journal |
Ann Work Expo Health |
| Volume |
in press |
Issue |
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Pages |
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| Keywords |
Commentary; Human Health |
| Abstract |
Shift work that involves circadian disruption has been classified as probably carcinogenic to humans by the International Agency for Research on Cancer, although more recent epidemiological evidence is not consistent. Several mechanisms have been postulated to explain an association between night work and female breast cancer, but the most likely is suppression of the hormone melatonin by light exposure at night. Three articles recently published in this journal describe aspects of exposure to light during night work. These articles and other evidence suggest that nighttime light levels may not always be sufficient to affect melatonin production, which could in part explain the inconsistencies in the epidemiological data. There is need to improve the specificity and reliability of exposure assessments in future epidemiological studies of night shift workers. |
| Address |
Institute of Occupational Medicine, Research Avenue North, Edinburgh, UK |
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English |
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2398-7308 |
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| Notes |
PMID:31175355 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2530 |
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| Author |
Garstang, R.H. |
| Title |
The Status and Prospects for Ground-Based Observatory Sites |
Type |
Journal Article |
| Year |
1989 |
Publication |
Annual Review of Astronomy and Astrophysics |
Abbreviated Journal |
Annu. Rev. Astron. Astrophys. |
| Volume |
27 |
Issue |
1 |
Pages |
19-40 |
| Keywords |
Skyglow |
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0066-4146 |
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no |
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GFZ @ kyba @ |
Serial |
2437 |
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| Author |
Gaston, K.J.; Davies, T.W.; Nedelec, S.L.; Holt, L.A. |
| Title |
Impacts of Artificial Light at Night on Biological Timings |
Type |
Journal Article |
| Year |
2017 |
Publication |
Annual Review of Ecology, Evolution, and Systematics |
Abbreviated Journal |
Annu. Rev. Ecol. Evol. Syst. |
| Volume |
48 |
Issue |
1 |
Pages |
49-68 |
| Keywords |
Review; Animals; Plants |
| Abstract |
The use of artificial lighting to illuminate the night has provided substantial benefits to humankind. It has also disrupted natural daily, seasonal, and lunar light cycles as experienced by a diversity of organisms, and hence it has also altered cues for the timings of many biological activities. Here we review the evidence for impacts of artificial nighttime lighting on these timings. Although the examples are scattered, concerning a wide variety of species and environments, the breadth of such impacts is compelling. Indeed, it seems reasonable to conclude that the vast majority of impacts of artificial nighttime lighting stem from effects on biological timings. This adds support to arguments that artificial nighttime lighting has a quite pervasive and marked impact on ecological systems, that the rapid expansion in the global extent of both direct illuminance and skyglow is thus of significant concern, and that a widespread implementation of mitigation measures is required. |
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1543-592X |
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Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2449 |
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| Author |
David, A.; Smet, K.A.G.; Whitehead, L. |
| Title |
Methods for Assessing Quantity and Quality of Illumination |
Type |
Journal Article |
| Year |
2019 |
Publication |
Annual Review of Vision Science |
Abbreviated Journal |
Annu Rev Vis Sci |
| Volume |
in press |
Issue |
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Pages |
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| Keywords |
Review; Vision |
| Abstract |
Human vision provides useful information about the shape and color of the objects around us. It works well in many, but not all, lighting conditions. Since the advent of human-made light sources, it has been important to understand how illumination affects vision quality, but this has been surprisingly difficult. The widespread introduction of solid-state light emitters has increased the urgency of this problem. Experts still debate how lighting can best enable high-quality vision-a key issue since about one-fifth of global electrical power production is used to make light. Photometry, the measurement of the visual quantity of light, is well established, yet significant uncertainties remain. Colorimetry, the measurement of color, has achieved good reproducibility, but researchers still struggle to understand how illumination can best enable high-quality color vision. Fortunately, in recent years, considerable progress has been made. Here, we summarize the current understanding and discuss key areas for future study. Expected final online publication date for the Annual Review of Vision Science Volume 5 is September 16, 2019. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates. |
| Address |
Department of Physics and Astronomy, University of British Columbia, Vancouver BC V6T 1Z1, Canada; email: lorne.whitehead@ubc.ca |
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English |
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Edition |
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| ISSN |
2374-4642 |
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| Notes |
PMID:31226013 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2576 |
| Permanent link to this record |
