This study investigated whether adjusting clothing to remain in neutral thermal comfort at moderately elevated temperature is capable of avoiding negative effects on perceived acute subclinical health symptoms, comfort, and cognitive performance. Two temperatures were examined: 23°C and 27°C. Twelve subjects were able to remain thermally comfortable at both temperatures by adjusting their clothing. They rated the physical environment, their comfort, the intensity of acute subclinical health symptoms, and their mental load, and they performed a number of cognitive tasks. Their physiological reactions were monitored. Their performance of several tasks was significantly worse at 27°C, and they reported increased mental load at this temperature. Skin temperature and humidity and respiration rate were higher, while blood oxygen saturation (SpO2) and pNN50 were lower at this temperature, the latter indicating increased stress. It is inferred that the observed physiological responses were mainly responsible for the negative effects on performance, as the subjects did not indicate any increased intensity of acute subclinical health symptoms although perceived air quality was worse at the higher temperature. The present results suggest that moderately elevated temperatures should be avoided even if thermal comfort can be achieved, as it may lead to reduced performance.

中文翻译：

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即使室内穿着舒适，在适度升高的室内温度下，感知的空气质量和认知能力也会下降。

这项研究调查了将衣服调整为在中等温度下保持中性热舒适性是否能够避免对感知到的急性亚临床健康症状，舒适性和认知能力产生负面影响。检查了两个温度：23℃和27℃。通过调整衣服，十二名受试者能够在两个温度下保持热舒适。他们评估了身体环境，舒适度，急性亚临床健康症状的强度以及他们的精神负担，并执行了许多认知任务。监测他们的生理反应。他们在27°C时完成多项任务的表现明显较差，并且他们报告了在此温度下精神负荷增加。皮肤温度，湿度和呼吸频率较高，在此温度下血氧饱和度（SpO2）和pNN50较低，后者表明压力增加。可以推断，观察到的生理反应主要是对运动表现的负面影响，因为尽管在较高的温度下感觉到的空气质量较差，但受试者并未显示出任何增加的急性亚临床健康症状强度。目前的结果表明，即使可以达到热舒适性，也应避免适度升高温度，因为这可能会导致性能降低。因为尽管较高的温度下感知的空气质量较差，但受试者并未显示出任何严重的急性亚临床健康症状强度。目前的结果表明，即使可以达到热舒适性，也应避免适度升高温度，因为这可能会导致性能降低。因为尽管较高的温度下感知的空气质量较差，但受试者并未显示出任何严重的急性亚临床健康症状强度。目前的结果表明，即使可以达到热舒适性，也应避免适度升高温度，因为这可能会导致性能降低。