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Assessment of deep body temperatures of women in hot jobs.

Kuhlemeier-KV; Miller-JM III
Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHEW (NIOSH) Publication No. 77-215, 1977 Jul; :1-104
In an effort to determine the deep body temperatures of women working under hot environmental conditions, 22 women participated in 511 1 hour walks. A total of 244 of these walks were performed at 25% of maximal aerobic capacity; 267 were at 31%. The temperature ranged from 22 to 32 degrees-C. Of the 22 subjects, two thirds worked in hot industries, either a foundry or laundry facility, and the remainder worked in neutral ambient temperatures. Tests were conducted in both summer and winter seasons. Rectal temperatures and heart rates were monitored. A substantial degree of heat acclimatization occurred in both the hot and the neutral group in the summer months, implying that passive heat acclimatization can be acquired by living in hot humid regions. The upper limit of the prescriptive zone (ULPZ) and the inflection points for heart rate (IPHR) were quite similar for the hot and neutral industry groups, indicating that heat acclimatization acquired by working in the hot environments was less than that acquired by residents in the southeastern United States. Females from neutral temperature industries had higher ULPZ's than men from a similar industrial class in an earlier comparable study. Women usually had higher IPHR's than neutral temperature men. In the summer men from hot industries had higher ULPZ's than women from hot industries at the higher work rate. The reverse was true at the lower work rate.
NIOSH-Contract; Contract-210-75-0021; Temperature-effects; Work-environment; Body-temperature; Hot-environments; Heat-stress; Heat-exposure
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DHEW (NIOSH) Publication No. 77-215; Contract-210-75-0021
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National Institute for Occupational Safety and Health
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division