Comments on mathematical models for thermoregulatory behavior.
NIOSH 1980 Dec; :129-139
The use of mathematical models in the study of the human thermoregulatory system was reviewed, and the one cylinder and multisegment whole body models were described. The use of mathematical models to predict rectal temperature, heart rate and sweat production during exposure to heat was prompted by the failure of the prevailing standards on work in hot environments to provide information applicable under extreme thermodynamic conditions such as those encountered in very high relative humidity settings. Simple cylinder models, according to which the body is regarded as a single cylinder, were developed to predict rectal temperature, skin temperature, and heart rate as a function of the work environment, the physical characteristics of the workers and the rate of work. More complicated such models were also developed to take into account the exchange of heat between the core and the surface of the body, and between body surface and environment. Multisegmented models based on circulatory, thermoregulatory and energy exchange parameters were designed and used to establish effective communication for interdisciplinary research team work. Both one cylinder models and multisegment models have been programmed for medium size computer simulation. The author concludes that research intended to develop standards applicable to unique thermodynamic conditions requires the use of model predictions and suggest the development of a rationally based model for accurate time dependence field studies.
NIOSH-Author; Body-temperature; Heat-exposure; Physiological-response; Occupational-health; Industrial-medicine; Hemodynamics; Medical-research
Dukes-Dobos FN; Henschel A
DHHS (NIOSH) Publication No. 81-108
Proceedings of a NIOSH Workshop on Recommended Heat Stress Standards, September 17-19, 1979, Cincinnati, Ohio