[in Japanese]

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By the application of principal component analysis to the foot data of 446 females ranging in age from 18 to 23 and from 60 to 90, the author discussed the property of foot form of aged females comparing with that of young females. The results were as follows:
(1) In the case of analyzing the young and aged groups separately, the contribution rate of the factor concerning foot breadth or girth of the aged group is lower than that of the young, but that of the factor concerning instep height of the aged is higher than that of the young.
(2) In the case of analyzing both the young and aged groups en bloc, the 1 st principal component signifies the factor of total foot mass, the 2 nd p. c. the factor of the proportion of breadth or girth to foot length, the 3 rd p. c. the factor of the proportion of instep height to length, and the 4th p. c. the factor of both width of ball angle and the proportion of inner plantar arch length to foot length. The average scores of the 1 st and 3 rd p. c. of the aged group are significantly lower than those of the young, but the average scores of the 2 nd and 4 th p. c. of the aged are significantly higher than those of the young. (Received March 29, 1990)

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The effects of two kinds of training wear on thermophysiological responses and clothing climate were studied under fluctuating ambient temperatures and constant humidity of 60% with six healthy adult females. Acrylic and cotton training wear (long-sleeved shirt and trousers) were used as experimental garments. The main results were summarized as follows:
1) Clothing temperature measured at trunk level and mean skin temperature in sweating subjects decreased in lesser extent in clothing conditions of acrylic training wear than in those of cotton training wear under falling ambient temperatures from 37° to 20°C in 45 min.
2) Rectal temperature was variable in greater extent in clothing conditions of acrylic training wear than in those of cotton training wear under varying ambient temperature from 25°to 37°C and from 37°to 20°C. These results were discussed in terms of thermal physiology and clothing sciences.

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