Performance, acute health symptoms and physiological responses during exposure to high air temperature and carbon dioxide concentration
Performance, acute health symptoms and physiological responses during exposure to high air temperature and carbon dioxide concentration
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暴露于高气温和二氧化碳浓度时的表现、急性健康症状和生理反应
DOI：
10.1016/j.buildenv.2016.12.020
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发表时间：
2017-03-01
影响因子：
7.4
通讯作者：
Wargocki, Pawel
中科院分区：
文献类型：
--
作者：
Liu, Weiwel;Zhong, Weidi;Wargocki, Pawel
人类受试者在人工气候室中暴露于 35 摄氏度的空气温度下 3 小时，这是一个行动水平，在中国，在此水平下的工作时间需要减少。目的是通过测量生理反应、主观评分和认知表现来测试这一行动水平，并将其与 26 摄氏度温度下的反应（参考暴露）进行比较。此外，在 35 摄氏度下将 CO2 浓度增加至 3000 ppm（CO2 暴露），以进一步检查这种变化是否会对测量的响应产生任何影响。与参考暴露相比，暴露于 35 摄氏度会导致受试者报告感觉温暖不舒服，将空气质量评为更差，报告嗜睡增加以及几种急性健康症状的强度更高。在此暴露下，鼓膜温度、皮肤温度、心率和体重减轻均显着增加，动脉血氧饱和度显着下降，而相差> 50 m的相邻心跳间隔百分比（pNN50）显着下降，表明压力升高。在此期间，加法和减法任务的表现也显着下降。在 35 摄氏度下将 CO2 浓度增加到 3000 ppm 不会导致响应发生显着变化。目前的结果再次确认了选择 35 摄氏度作为行动水平，并表明同时发生的高二氧化碳水平不会加剧危害。 (C) 2016 Elsevier Ltd. 保留所有权利。
Human subjects were exposed for 3 h in a climate chamber to the air temperature of 35 degrees C that is an action level, at which the working time needs to be diminished in China. The purpose was to put this action level to test by measuring physiological responses, subjective ratings and cognitive performance, and compare them with responses at temperature of 26 degrees C (reference exposure). Moreover, CO2 was increased to 3000 ppm (CO2 exposure) at 35 degrees C to further examine, whether this change will have any effect on the measured responses. Compared with the reference exposure, exposure to 35 degrees C caused subjects to report feeling uncomfortably warm, to rate the air quality as worse, to report increased sleepiness and higher intensity of several acute health symptoms. Eardrum temperature, skin temperature, heart rate and body weight loss all increased significantly at this exposure, arterial oxygen saturation decreased significantly, while the percentage-of adjacent inter-beat cardiac intervals differing by > 50 m (pNN50) decreased significantly, indicating elevated stress. The performance of addition and subtraction tasks decreased significantly during this exposure, as well. Increasing CO2 to 3000 ppm at 35 degrees C caused no significant changes in responses. Present results reaffirm the selection of 35 degrees C as an action level, and show that concurrently occurring high CO2 levels should not exacerbate the hazards. (C) 2016 Elsevier Ltd. All rights reserved.