Abstract
The response curves of middle finger skin temperature due to ice water (0°C) immersion test were measured. In order to clarify the effect of aging factor on this response curve, the comparison of those between brothers and/or between sons and their father in the same family was made. The subjects were selected from three families (O, K and Y) in Shiroishi-City, Miyagi, Japan. The measurements obtained from 8, 10 and 12-year-old boys of O family indicated the following. In growing children, the effect of aging factor on the response curve during immersion was higher first rising speed and larger rising amplitude. That of recovery process was shorter recovery time. In grown-up person, the effect of aging factor on the response curve was different ftom that in growing children. The comparison of measurements between sons and their father in each family showed that the effect was longer recovery time in recovery process.
