Heat removal using microclimate foot cooling: a thermal foot manikin study.

Background: It has been proposed that microclimate cooling systems exploit the peripheral extremities because of more efficient heat transfer. The purpose of this study was to quantify, using a patented microclimate cooling technique, the heat transfer from the plantar surface of the foot for comparison to other commonly cooled body regions.

Methods: A military boot was fitted with an insole embedded with a coiled, 1.

Sweat rate prediction equations for outdoor exercise with transient solar radiation.

We investigated the validity of employing a fuzzy piecewise prediction equation (PW) [Gonzalez et al. J Appl Physiol 107: 379-388, 2009] defined by sweat rate (m(sw), g·m(-2)·h(-1)) = 147 + 1.527·(E(req)) - 0.

Methods of evaluating protective clothing relative to heat and cold stress: thermal manikin, biomedical modeling, and human testing.

Personal protective equipment (PPE) refers to clothing and equipment designed to protect individuals from chemical, biological, radiological, nuclear, and explosive hazards. The materials used to provide this protection may exacerbate thermal strain by limiting heat and water vapor transfer. Any new PPE must therefore be evaluated to ensure that it poses no greater thermal strain than the current standard for the same level of hazard protection.

Model of human thermoregulation for intermittent regional cooling.

Introduction: A prospective approach to save energy expenditure for a liquid cooling garment (LCG) system is to provide intermittent regional cooling (IRC) to the human body instead of continuous cooling. In order to gain insight into IRC mechanisms, a mathematical model was developed to simulate thermal interaction between the human and IRC.

Methods: Human thermoregulatory responses were simulated by a previously validated six-cylinder mathematical model.

Sensations of temperature and humidity during alternative work/rest and the influence of underwear knit structure.

The purpose of this study was to evaluate the influence of alternate work/rest and knit structure of underwear on various subjective sensations of temperature and humidity. Underwear manufactured from 100% polypropylene fibres in five different knit structures (1-by-l rib, fleece, fishnet, interlock, double-layer rib) were applied and tested as part of a prototype clothing system. Human testing was done on eight male subjects, and took place at T = 5°C, T = - 3·5°C and V = 0·32ms.