生体の耐暑性・耐寒性に関する研究--環境影響との関連について

概要

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This study has been tried to investigate the relationship between heat or cold tolerances of human body and the influence of climatic conditions. Fifty-one healthy male adults immigrating to the Okinawan district from the mainland of Japan were used for this study with 55 controls residing natively in Okinawa. Three loadings of heat or cold exposures to the whole body and the vascular hunting reaction was applied on the individuals in each group. The series of these experiments were performed at summer and winter periods. The measured values and subjects were investigated comprehensively by the various multivariate analyses. The results of cluster analysis of subjects by three pieces of different variables are as follows; 1) R.I. of Nakamura's method is representing a typical index of local cold tolerances. 2) The differences in physical constitution of immigrants and native Okinawans has not effected upon dendrograms of subjects. From the classification of subjects by cluster analysis, principal component analysis and factor analysis, it was obvious that the division of summer and winter experiments took precedence of the division of immigrants and native Okinawans. In comparison of immigrants with native Okinawans for these three tolerances, there was some difference in heat tolerances between the two groups.
日本民族衛生学会の論文