01 Mar A step forward toward perspiration.
The human body is a thermal machine that, through the metabolism transforms the chemical energy ingested through food and drink into heat and work. When physical activity takes place, most of the energy is transformed into heat. About 80% of this heat is expelled through perspiration (which is nothing more than the evaporation of sweat produced by the human body). The two individual parameters that influence thermogrometric well-being are:
. Physical activity intensity.
. Type of clothing: fundamental parameter that affects the passage of heat and humidity.
The sweat that comes from the skin, if it does not evaporate properly, creates a film on the epidermis that clogs the pores and forces the body to make an extra effort to the drops of sweat evaporate: it can also lead to an additional cardiac effort of 8 beats / minute. A situation that quickly leads to the onset of the feeling of fatigue, with a consequent decrease in performance (in addition to all the related risks). An additional problem due to internal and muscle overheating is the early onset of muscle cramps. Finally, bad perspiration can lead to the onset of sweat dermatitis.
In order to ensure adequate evaporation, in the development of technical clothing, therefore a good thermohygrometric well-being, it is of fundamental importance not to limit oneself only to traditional technical-textile parameters (RET – resistance to the transmission of water vapor -; RCT – resistance to conductive heat transfer – ).
In Btech, we took a step forward and studied a fundamental physiological parameter: the MET (Metabolic Equivalent of Task). It is essential for us to study the heat produced per unit of time and body surface. This way we are able to propose solutions with a high performance level, designed according to the specific physical activities to be performed. As the MET increases (each discipline has its own), the speed with which the internal body temperature rises grow.
A Btech technical clothing item is therefore the most classic example of “cross fertilization” where textile technique meets physiology and creates well-being and performance.
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