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高温对人体工作能力的影响,由于实验的热环境条件和实验方法的不同,结果不尽一致。本文报道了高温对人体视反应时影响的观察。(一)试验对象与方法12名未经热习服锻炼的健康男性自愿参试,年龄21～23岁,身高172.1±4.0cm,体重63.3±43.3kg。人工气候室干球温度42±0.3℃,湿球温度35±0.2℃,黑球温度41±1.4℃,相对湿度20±4%,WBGT37.40～37.55℃,受试者于餐后60min穿单军服进入气候室,分别在高温暴露30min和140min后测试简单视反应时(SRT)30次及色彩、符号和手足选择反应时(CRT)各20次,统计平均反应时间和CRT失误次数;每次视反应时
The influence of high temperature on the working ability of the human body is not consistent due to the difference of the experimental thermal environmental conditions and experimental methods. This article reports the effects of high temperature on visual acuity in humans. (I) Test Subjects and Methods Twelve healthy volunteers who had not been accustomed to exercising during the heat test were aged 21 to 23 years old, with a height of 172.1 ± 4.0 cm and a body weight of 63.3 ± 43.3 kg. The dry-bulb temperature of the artificial climate chamber was 42 ± 0.3 ℃, the wet-bulb temperature was 35 ± 0.2 ℃, the black-ball temperature was 41 ± 1.4 ℃ and the relative humidity was 20 ± 4%. WBGT was 37.40 ~ 37.55 ℃. Military uniforms entered the climatic chamber and were tested for 30 SRTs and 20 times for color, sign and hand-foot-select reaction (CRT), respectively, at 30 min and 140 min after exposure to high temperatures. The average response time and number of CRT failures were recorded. Depending on reaction time