Effect of global warming on health - Environmental temperatures and biological responses during daily activities -

我们研究了环境温度和生物反应以及夏季中暑死亡的发生。(1)北海道在气温比本州低2-3℃的情况下发生了运动时中暑，人们对高温的适应程度被认为在两个地区存在差异。(2)在科比，根据急救记录，中暑和脱水在65岁或以上的人群中频繁发生。当气温比前一天高2℃左右时，以及在炎热的日子里，它们的频率增加。(3)虽然室外温度白天高，晚上低，但有些人在白天比晚上凉爽的空调房间里生活和工作，这种受控室内温度和室外温度之间的差异扩大了我们所经历的温度范围。(4)本文研究了夏季室内（20-25℃）和室外（30-35℃）运动（踏功计）时心率与摄氧量的关系，评价了运动时的生物学反应。虽然在相同的运动强度下氧摄取量没有变化，但在户外运动期间心率增加，可能是由于皮肤血管对高温的反应而扩张。在夏季的日常生活中，凉爽的室内和炎热的室外环境之间的突然温度变化被认为是一个健康问题。

We studied environmental temperatures and biological responses as well as occurrence of death from heat stroke in the summer.(1) Heat stroke during exercise occurred in Hokkaido at a temperature 2-3℃ lower than in Honshu, and the degree of adaptation of people to high temperatures is considered to be different between the two regions.(2) In Kobe, heat stroke and dehydration occurred frequently in those aged 65 years or above according to the records of emergency care. Their frequency increased when the temperature was about 2℃ higher than on the previous day as well as on hot days.(3) Although the outdoor temperature is high during the daytime and low at night, some people live and work in air-conditioned rooms that are cooler during the daytime than at night This difference between controlled indoor temperatures and outdoor temperatures widens the temperature range that we experience.(4) The relationship between the heart rate and the oxygen uptake was studied in summer during exercising (ergometer pedaling) indoors (20-25℃ and outdoors (30-35℃), and biological responses during exercise were evaluated. Although there was no change in the oxygen uptake at the same exercise intensity, the heart rate was increased during outdoor exercise presumably due to dilation of cutaneous vessels in response to a high temperature. In daily living during summer, sudden temperature changes between the cool indoor and hot outdoor environments are considered to a problem for health.