| 研究概要 |
The present experiments were carried out to clarify the effects of three different kinds of shoes on thermoregulatory responses and clothing microclimate in six adult women during walking under the blazing sun and rest in the shade. The field experiments were carried out from 5th to 25th in August. Air temperature ranged from 33ﾟ to 37℃ under the sun and from 28ﾟ to 32℃ under the shade, glove temperature from 35ﾟ to 41℃, wind velocities from 0.6 to 1.7m/sec.Six fimale students, aged 19-20 yrs volunteered as subjects. The shoes used in experiments were walking shoes (weight 350g), mesh shoes (350g) and sandals (350g). The materials were all leather. The subjects wore cotton training T-shirts with long sleeves and cotton skirts. The measurements items were skin temperature, clothing microclimate, rectal temperature and subjective sensations. They walked to the metronome under the blazing sun for 10 min and took rest in the shade for 10 min. These schedules were repeated 4 times. Main res
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ults were summarized as follows:
1)Rectal temperatures were kept significantly higher in walking shoes throughout the experimental periods of 80 min, compared with those in mesh shoes and sandals. There were no differences in rectal temperatures between mesh shoes and sandals.
2)Sole and instep skin temperatures were significantly higher in part in walking ahoes than those in mesh shoes and sandals, while there were no differences in these values between mesh shoes and sandals.
3)Clothing microclimate temperatures near sole were significantly higher mostly in walking shoes during walking and rest than those in mesh shoes and sandals, while there were no difference in these values berween mesh shoes and sandals.
4)Clothing microclimate humidities near sole were significantly higher mostly during walking and rest in walking shoes than those in mesh shoes and sandals, while there were no differences in these values between mesh shoes and sandals. From these results, it is presumed that the dry and wet heat loss from feet to surroundings were reduced in walking shoes, resulting in the highest rectal temperatures in walking shoes. Present results seem to show that it is important to choose the shoes properly in order to reduce the thermoregulatory heat load during walking under the blazing sun. 隠す
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