Heart rate variability at different thermal comfort levels
Heart rate variability at different thermal comfort levels
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DOI：
10.1007/s00421-008-0718-6
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发表时间：
2008-06-01
影响因子：
3
通讯作者：
Liu, Yuanmou
中科院分区：
文献类型：
--
作者：
Liu, Weiwei;Lian, Zhiwei;Liu, Yuanmou
人体热舒适机理对于营造舒适、健康的室内环境具有重要意义。本文分析了人体在不同热舒适水平下的心率变异性，探讨了人体热舒适的机理。共33例受试者分为3组。在21、24、26、28、29和30摄氏度的气温下，记录受试者的心电图5分钟。分析HRV（低频和高频带的绝对功率比，LF/HF比）。在相同的热感觉下，不舒适水平的LF/HF显著高于舒适水平（P < 0.05）。结果表明，交感神经活动在人体热不适中起重要作用，LF/HF比值可作为人体热舒适的指标。
The mechanism of human thermal comfort is important for building a comfortable and healthy indoor environment. This paper analyzes human heart rate variability (HRV) at different thermal comfort levels and discusses the mechanism of human thermal comfort. A total of 33 subjects were divided in 3 groups. Under air temperatures of 21, 24, 26, 28, 29, and 30 degrees C, the subjects' electrocardiogram was recorded for 5 min. HRV (the ratio of absolute powers in low- and high-frequency bands, LF/HF ratio) was analyzed. LF/HF at discomfort level were significantly higher than that at comfort level (P < 0.05), despite the same thermal sensation. The results indicate that sympathetic activity plays an important role in subjects' thermal discomfort and the LF/HF ratio may be used as an indicator for human thermal comfort.