Thermo-physiological Responses of the Foot and its Application to Designing Footwear
Grant-in-Aid for Scientific Research (C)
|Allocation Type||Single-year Grants|
|Research Institution||Bunka Women's University|
IWASAKI Fusako Junior College Division of Bunka Women's University, Professor, 教授 (40103775)
|Project Period (FY)
1997 – 1999
Completed(Fiscal Year 1999)
|Budget Amount *help
¥3,400,000 (Direct Cost : ¥3,400,000)
Fiscal Year 1999 : ¥300,000 (Direct Cost : ¥300,000)
Fiscal Year 1998 : ¥500,000 (Direct Cost : ¥500,000)
Fiscal Year 1997 : ¥2,600,000 (Direct Cost : ¥2,600,000)
|Keywords||Thermo-Physiological Responses of the Foot / Shoe Micro-Climate / Designing Footwear / Autonomic Nervous Activities / Skin Temperature / Bacteria / Skin Blood Flow / Perspiration / 足部生理機能 / 足部皮膚温 / 交感神経 / 靴着用 / 被覆面積 / 蒸れ感 / 足部圧迫・開放 / 足部温熱生理反応 / 副交感神経 / 微生物汚れ / 安静時足部生理機能 / 足部蒸散量 / 足部血流量 / 熱・水分移動 / 足袋内温湿度|
This study was performed to investigate thermo-physiological responses of the foot in various environments (22/28/34℃, 50%RH) and psychological responses on the shoes in order to obtain fundamental data for designing healthy footwear.
The results are as follows.
(1) The average skin temperature of the foot varies from 29.9±1.2℃ (22℃) to 33.3±1.0℃ (28℃) to 36.1±0.5℃(34℃). The differences based on the individual and the part of the foot are larger than on the lowest temperature. On the other hand, the differences are small in the high temperature.
(2) The average perspiration of the foot ranges from 44.8±8.0g/mィイD12ィエD1h (22℃) to 55.3±7.1g/mィイD12ィエD1h (28℃) to 57.0±6.1g/mィイD12ィエD1h (34℃) on the bottom of foot. On the top of the foot, it ranges from 18.2±5.1g/mィイD12ィエD1h (22℃) to 26.5±6.3g/mィイD12ィエD1h (28℃) to 46.4±6.8g/mィイD12ィエD1h (34℃).
(3) The skin blood flow was almost constant under the conditions of 22℃ and 28℃, while it increased in all subjects when they were exposed to the 34℃ temperature conditions.
(4) At both high and low temperature conditions, the humidity inside of the shoes reached as high as 80% when the shoe with low moisture permeability and a greater clothed area was worn.
(5) The shape, material and part of the shoe made the difference in the amount of bacteria and degree of cleanliness inside of the shoe.
(6) The effects of wearing shoes on sympathetic nervous system (SNS) and parasympathetic nervous system (PNS) activities were significant. SNS activities of subjects wearing shoes were higher than those of subjects who were barefoot. The reverse was true of PNS activities.
The results suggested that thermo-physiological responses of the foot influenced temperature-regulation of the whole body and heating or cooling of the foot would be an important factor in determining the health and comfort sensation of the whole body.
Research Output (15results)