Sick Building Syndrome symptoms and performance in a field laboratory study at different levels of temperature and humidity

Lei Fang, David Wyon, Geo Clausen, Povl Ole Fanger

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


Thirty female subjects were exposed for 280 minutes to four conditions in balanced order of presentation: to 20 deg.C/40%, 23 deg.C/50%, 26 deg.C/60% RH at 10 L/s/p outside air, and to 20 deg.C/40% RH at 3.5 L/s/p. They performed simulated office work throughout each exposure and repeatedly marked a set of visual-analogue scales to indicate their perception of environmental conditions and of the intensity of SBS symptoms at the time. They were repeatedly reminded to adjust their clothing so as to remain in thermal comfort, and succeeded in doing so. Although perceived air quality improved at lower indoor air temperature and humidity and at the higher ventilation rate, this could not be shown to be associated with any effects on task performance. However, subjects reported significantly more intense SBS symptoms associated with decreased productivity, including fatigue, headache and difficulty in thinking clearly, when they were exposed to raised levels of temperature and humidity.
Original languageEnglish
Title of host publicationProceedings of Indoor Air 2002
Publication date2002
Publication statusPublished - 2002
Event9th International Conference on Indoor Air Quality and Climate - Monterey, CA, United States
Duration: 30 Jun 20025 Jul 2002
Conference number: 9


Conference9th International Conference on Indoor Air Quality and Climate
CountryUnited States
CityMonterey, CA
Internet address

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