Abstract
This study is the fourth report on the adaptability of aged persons to living environment and environmental temperatures. The following information is obtained, through analyzing variations by aging and seasonal changes, and they reported how the aged persons accommodate themselves to the conditions of living environment and environmental temperatures.
(1) Among aged groups, corresponding relationships are established between the degree of comfort of living in and the vital resistance of the body as well as between the former factor and the satisfaction in sleeping.
(2) No significant difference is recognized among the groups as for the time of starting to use heaters in the daytime. However, the young groups show a significant delay in starting to use them before going to bed while the aged groups show only about half of month of delay as compared with the beginning in using heaters during the daytime.
(3) The neutral temperature, in which a human being does not feel too hot nor too cold, shows about 10°C lower in winter than in summer.
(4) The young groups accomodate to the cold mainly by adjusting clothing, while the aged groups mainly by modulating body temperatures through physical activity.
