冬季温度漂移下心率变异性对人体热舒适的影响.

It is shown that changes in ambient temperature have a significant impact on human heart activity. People can suffer from cardiovascular disease because of cold or extreme temperatures. Based on the human heart rate variability index, the advantages of temperature drift thermal environments in indoor thermal comfort were explored. The relationship between subjective thermal evaluation, skin temperature and heart rate variability in humans were also analyzed. 16 Subjects underwent a half-hour temperature drift from the initial stable temperatures (24 ℃ or 18 ℃ ) in winter and finally warmed up back to the initial temperatures. Subjective thermal evaluations and skin temperatures were collected from the subjects and the electrogastrogram ECG signals were monitored throughout the experiment. Meanwhile, the LF/ HF values of heart rate variability were obtained by frequency domain analysis. The results show that the subjects' thermal comfort evaluation to the same temperature thermal environment in winter can be improved by the appropriate temperature drift. The effect of temperature drift on human thermal comfort can be characterized by LF/ HF values. The LF/ HF values of humans are significantly correlated with the mean skin temperature and thermal sensation in the winter thermal environment with temperature drift. [ABSTRACT FROM AUTHOR]