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A Cross-Sectional Study of Circadian Stimulus in Swedish Radiographers’ Light Environment

Viseu, Camilla Krahmer Anes LU and Selvander, Madeleine LU (2025) In Health Environments Research & Design Journal 18(1). p.59-69
Abstract
Timely light exposure is a vital aspect to achieve better sleep and well-being. As there are risks with a disturbed circadian rhythm and benefits with light settings that stimulate the rhythm, the circadian effective light, circadian stimulus (CS), for radiographers was examined. Aim: The aim of the study was to compare radiographers’ light environment on the workstations, at a university hospital in Southern Sweden in the form of CS and relate that to recommendations published by the Swedish Environmental Protection Agency. Method: A cross-sectional method has been applied. The measurements for CS were collected in all labs in the radiology department in the middle of January. Result: A total of 804 measures were evenly collected... (More)
Timely light exposure is a vital aspect to achieve better sleep and well-being. As there are risks with a disturbed circadian rhythm and benefits with light settings that stimulate the rhythm, the circadian effective light, circadian stimulus (CS), for radiographers was examined. Aim: The aim of the study was to compare radiographers’ light environment on the workstations, at a university hospital in Southern Sweden in the form of CS and relate that to recommendations published by the Swedish Environmental Protection Agency. Method: A cross-sectional method has been applied. The measurements for CS were collected in all labs in the radiology department in the middle of January. Result: A total of 804 measures were evenly collected resulting in a median for the 19 labs, where the observed median for all labs was 0.091 CS which is significantly lower than the recommended value of 0.3 CS (p < .001). Comparing work light settings with maximum light levels in the brightest and darkest labs showed a significant difference (p < .001). Conclusion: The CS values in the labs, at the radiology department at a university hospital in Southern Sweden, do not reach the recommended values of circadian stimulus published by the Swedish Environmental Protection Agency when the radiographers themselves set the light. There is a potential for improvement as a significant difference could be seen between the chosen level of light and the maximum possible level of light. (Less)
Abstract (Swedish)

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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Health Environments Research & Design Journal
volume
18
issue
1
pages
59 - 69
publisher
Center for Health Design
external identifiers
  • scopus:85203979008
  • pmid:39262317
ISSN
2167-5112
DOI
10.1177/19375867241278599
language
English
LU publication?
yes
id
8039d1ac-6a10-43e2-b316-32003afd0d38
date added to LUP
2024-12-09 13:23:48
date last changed
2025-01-21 11:52:44
@article{8039d1ac-6a10-43e2-b316-32003afd0d38,
  abstract     = {{Timely light exposure is a vital aspect to achieve better sleep and well-being. As there are risks with a disturbed circadian rhythm and benefits with light settings that stimulate the rhythm, the circadian effective light, circadian stimulus (CS), for radiographers was examined. Aim: The aim of the study was to compare radiographers’ light environment on the workstations, at a university hospital in Southern Sweden in the form of CS and relate that to recommendations published by the Swedish Environmental Protection Agency. Method: A cross-sectional method has been applied. The measurements for CS were collected in all labs in the radiology department in the middle of January. Result: A total of 804 measures were evenly collected resulting in a median for the 19 labs, where the observed median for all labs was 0.091 CS which is significantly lower than the recommended value of 0.3 CS (p &lt; .001). Comparing work light settings with maximum light levels in the brightest and darkest labs showed a significant difference (p &lt; .001). Conclusion: The CS values in the labs, at the radiology department at a university hospital in Southern Sweden, do not reach the recommended values of circadian stimulus published by the Swedish Environmental Protection Agency when the radiographers themselves set the light. There is a potential for improvement as a significant difference could be seen between the chosen level of light and the maximum possible level of light.}},
  author       = {{Viseu, Camilla Krahmer Anes and Selvander, Madeleine}},
  issn         = {{2167-5112}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{59--69}},
  publisher    = {{Center for Health Design}},
  series       = {{Health Environments Research & Design Journal}},
  title        = {{A Cross-Sectional Study of Circadian Stimulus in Swedish Radiographers’ Light Environment}},
  url          = {{http://dx.doi.org/10.1177/19375867241278599}},
  doi          = {{10.1177/19375867241278599}},
  volume       = {{18}},
  year         = {{2025}},
}