Abstract
The third report published by IPCC in 2001 said that the health effects of global warming have appeared in all of the world, and estimated that the average temperature in 2100 will increase 1.4 to 5.8 degrees centigrade compared with that in 1990. They also described both the direct and indirect effects including ecological, social and economic ones. The occurrence of heat stroke increases when daily maximum temperature is higher than 30℃ in Tokyo, and senior citizen older than 65 years are defined as a high risk group for heat stroke. It is observed that there is a "V"-shaped relationship between daily maximum temperature and daily mortality rates, characterized by mortality rates that are higher when the temperature is extremely low or higher than when the temperature is moderate. Besides, the V-shape moves horizontally according to the climate in Japan. Response to the heat stress of the young people in Thailand may be best among Japanese and Thailand people judging from the LF/HF and HF values. But it is suggested that young people working in air conditioned offices in the daytime have weak response to heat stress.
