1991 Fiscal Year Final Research Report Summary

Thermophysiological Significance of Wearing Hat in Hot and Cold and Its Effect on Work Efficiency

Research Project

Project/Area Number	01580066
Research Category	Grant-in-Aid for General Scientific Research (C)
Allocation Type	Single-year Grants
Research Field	家政学
Research Institution	Nara Women's University
Principal Investigator	TOKURA Hiromi Nara Women's University Department of Clothing Sciences Professor, 家政学部, 教授 (80027490)
Co-Investigator(Kenkyū-buntansha)	MIDORIKAWA Tomoko Nara Women's University Department of Clothing Sciences Instructor, 家政学部, 非常勤講師 (30149538)
Project Period (FY)	1989 – 1991
Keywords	hat / cold exposure / tympanic membrane temperature / rectal temperature / skin temperature / counter current heat exchange system / thermal comfort / work efficiency
Research Abstract	Main results can be summarized as follows : 1) The effects of wearing hat at 35ﾟC and radiant conditions (400 W lamp x 2) were studied, indicating that tympanic membrane temperature and its increase were significantly lower and sweating onset times and amounts of sweating were delayed and smaller, respectively, with hat than without hat. 2) Tympanie membrane temperature was kept higher and more promise with hat than without hat at 10ﾟC. Work efficieney and thermal comfort were also better with hat. These results were discussed in terms of thermal physiology.

(4 results)