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Short-term exposure to indoor carbon dioxide and cognitive task performance: A systematic review and meta-analysis
https://orcid.org/0000-0002-0890-3306
Abstract Recent studies have shown that short-term exposure to high levels of indoor carbon dioxide (CO2) could negatively affect human cognitive performance, but the results are still controversial. In this study, a systematic review and meta-analysis of fifteen eligible studies was performed to quantify the effects of short-term CO2 exposure on cognitive task performance. The control CO2 levels used for comparison were below 1000 ppm, while the exposure concentrations were divided into three groups: 1000–1500 ppm, 1500–3000 ppm, and 3000–5000 ppm. The results indicated that CO2 exposure below 5000 ppm impacted human cognitive performance, with complex cognitive tasks being more significantly affected than simple tasks. The complex task performance declined significantly when exposed to additional CO2 concentrations of 1000–1500 ppm and 1500–3000 ppm, with pooled standardized mean differences (SMDs) (95% CI) of −2.044 (−2.620, −1.467) and −0.860 (−1.380, −0.340), respectively. Moreover, prolonged exposure to CO2 may exacerbate the adverse effects on complex task performance. School-aged children also exhibited a slight decrease in simple task accuracy when exposed to ventilation-manipulated CO2 concentrations of 1500–3000 ppm, with a SMD (95% CIs) of −0.117 (−0.225, −0.009). Besides, the complex task performance of the occupational-exposure population was less impaired by increased CO2 exposure than that of the general population. The meta-analyses provide new evidence to support the recommendation for a stricter occupational exposure concentration limit of less than 1000 ppm in workplaces that require high cognitive demands. Moreover, the exposure duration for performing complex cognitive tasks at high indoor CO2 concentrations is suggested to be no more than 120 min.
Graphical abstract Display Omitted
Short-term exposure to indoor carbon dioxide and cognitive task performance: A systematic review and meta-analysis
https://orcid.org/0000-0002-0890-3306
Abstract Recent studies have shown that short-term exposure to high levels of indoor carbon dioxide (CO2) could negatively affect human cognitive performance, but the results are still controversial. In this study, a systematic review and meta-analysis of fifteen eligible studies was performed to quantify the effects of short-term CO2 exposure on cognitive task performance. The control CO2 levels used for comparison were below 1000 ppm, while the exposure concentrations were divided into three groups: 1000–1500 ppm, 1500–3000 ppm, and 3000–5000 ppm. The results indicated that CO2 exposure below 5000 ppm impacted human cognitive performance, with complex cognitive tasks being more significantly affected than simple tasks. The complex task performance declined significantly when exposed to additional CO2 concentrations of 1000–1500 ppm and 1500–3000 ppm, with pooled standardized mean differences (SMDs) (95% CI) of −2.044 (−2.620, −1.467) and −0.860 (−1.380, −0.340), respectively. Moreover, prolonged exposure to CO2 may exacerbate the adverse effects on complex task performance. School-aged children also exhibited a slight decrease in simple task accuracy when exposed to ventilation-manipulated CO2 concentrations of 1500–3000 ppm, with a SMD (95% CIs) of −0.117 (−0.225, −0.009). Besides, the complex task performance of the occupational-exposure population was less impaired by increased CO2 exposure than that of the general population. The meta-analyses provide new evidence to support the recommendation for a stricter occupational exposure concentration limit of less than 1000 ppm in workplaces that require high cognitive demands. Moreover, the exposure duration for performing complex cognitive tasks at high indoor CO2 concentrations is suggested to be no more than 120 min.
Graphical abstract Display Omitted
Short-term exposure to indoor carbon dioxide and cognitive task performance: A systematic review and meta-analysis
https://orcid.org/0000-0002-0890-3306
Abstract Recent studies have shown that short-term exposure to high levels of indoor carbon dioxide (CO2) could negatively affect human cognitive performance, but the results are still controversial. In this study, a systematic review and meta-analysis of fifteen eligible studies was performed to quantify the effects of short-term CO2 exposure on cognitive task performance. The control CO2 levels used for comparison were below 1000 ppm, while the exposure concentrations were divided into three groups: 1000–1500 ppm, 1500–3000 ppm, and 3000–5000 ppm. The results indicated that CO2 exposure below 5000 ppm impacted human cognitive performance, with complex cognitive tasks being more significantly affected than simple tasks. The complex task performance declined significantly when exposed to additional CO2 concentrations of 1000–1500 ppm and 1500–3000 ppm, with pooled standardized mean differences (SMDs) (95% CI) of −2.044 (−2.620, −1.467) and −0.860 (−1.380, −0.340), respectively. Moreover, prolonged exposure to CO2 may exacerbate the adverse effects on complex task performance. School-aged children also exhibited a slight decrease in simple task accuracy when exposed to ventilation-manipulated CO2 concentrations of 1500–3000 ppm, with a SMD (95% CIs) of −0.117 (−0.225, −0.009). Besides, the complex task performance of the occupational-exposure population was less impaired by increased CO2 exposure than that of the general population. The meta-analyses provide new evidence to support the recommendation for a stricter occupational exposure concentration limit of less than 1000 ppm in workplaces that require high cognitive demands. Moreover, the exposure duration for performing complex cognitive tasks at high indoor CO2 concentrations is suggested to be no more than 120 min.
Graphical abstract Display Omitted
Short-term exposure to indoor carbon dioxide and cognitive task performance: A systematic review and meta-analysis
Fan, Yuejie (author) / Cao, Xiaodong (author) / Zhang, Jie (author) / Lai, Dayi (author) / Pang, Liping (author)
Building and Environment ; 237
2023-04-17
Article (Journal)
Electronic Resource
English
| DOAJ | 2020