论文部分内容阅读
心率作为研究人体热感觉的一项外在生理指标,其随海拔高度的变化也表现出与常压不同的特点,为进一步了解低气压环境下不同压力对人体心率及热感觉的影响规律,探讨在低气压环境下是否存在人体心率及热感觉的压力敏感区,本文模拟高原低气压环境,通过问卷调查的形式,对20名受试者处在不同压力环境中的平均心率及热感觉变化规律进行了实验研究。结果表明,在本实验模拟的最低压力75.98 kPa(约海拔高度2 300 m)的范围内,人体平均心率及平均热感觉值随压力的降低而降低;压力在86.11~101.3 kPa时,人的心率及热感觉变化显著;压力在86.11 kPa以下时,人的心率及热感觉变化很小。进而得到低气压环境下人体心率及热感觉的压力敏感区,即86.11~101.3 kPa之间。
As an external physiological index to study the human body thermal sensation, the heart rate also shows different characteristics from the atmospheric pressure as the altitude changes. In order to further understand the influence of different pressures on heart rate and thermal sensation in low-pressure environment, In low-pressure environment, whether there is pressure-sensitive region of human heart rate and thermal sensation, this paper simulates the low-pressure environment in the plateau. Through questionnaire survey, the average heart rate and thermal sensation of 20 subjects in different pressure environments An experimental study was carried out. The results showed that within the range of 75.98 kPa (about 2 300 m above sea level), the mean heart rate and mean sensation decreased with the decrease of the pressure. When the pressure was between 86.11 and 101.3 kPa, the heart rate And thermal sensation changed significantly; under the pressure of 86.11 kPa, the human heart rate and thermal sensation changed little. The pressure-sensitive region of human heart rate and thermal sensation under the low-pressure environment is obtained, that is, between 86.11 and 101.3 kPa.