Fall in skin temperature of exercising man.

Abstract

Fall in skin temperature during initial muscular work was investigated in ten healthy men. Bicycle exercise was performed at workloads of 50-150 W in a climatic chamber at ambient temperatures of 10-40'C (relative humidity 45-55%). Skin temperatures at seven or eight points over the body surface were measured using thermography and thermocouple recording systems. Sweat rates were significantly higher at 400C than at 30'C, whereas the fall in skin temperature was almost equal. The reduction of skin temperature during exercise was the same throughout the year, although sweat rate was significantly higher in summer than in winter. In coloured thermographics of the skin temperature distribution during exercise of both 50 and 150 W at 10 or 20'C, the skin temperature began to dedine immediately at the onset of the exercise. Increased work intensities reduced skin temperature. The results suggest that fall in skin temperature during initial exercise was not due to increased evaporative cooling but to vasoconstriction, probably caused by non-thermal factors.

Reliability and validity of skin temperature measurement by telemetry thermistors and a thermal camera during exercise in the heat

“…T SKIN is a consequence of dermis microcirculation, which is mediated through activity of the sympathetic nervous system and regulated by the hypothalamus. Typically T SKIN may initially reduce during exercise as a consequence of sweat on the skin surface and blood shifting towards working skeletal muscles (Torii et al 1992). However, a steady rise is observed during endurance exercise as core temperature (T CORE ) increases, with elevated ambient temperatures increasing the rate of T SKIN increase (Roberts & Wenger 1979).…”

Analysing visual pattern of skin temperature during submaximal and maximal exercises

“…In addition to using thermistors, thermal imaging is more advantageous for analysing skin temperature owing to its ability to analyse larger areas without contacting the skin [8,9]. In limited literature, the infrared thermography have been used to analyse T skin by multiple plot analysis, averaging around hottest pixels area, averaging total body segment temperatures and averaging geometric areas with or without markers [10][11][12][13][14][15][16][17].…”

Application of Thermal Imaging and PWC170 Test for the Evaluation of the Effects of a 30-Week Step Aerobics Training

“…The temperature of various parts of the body is an important parameter in the evaluation of human adaptation to different environmental conditions and muscle activities (Akimov et al, 2009;Chudecka & Lubkowska, 2012;Fernández-Cuevas et al, 2015;Kenney & Munce, 2003;Novotny et al, 2015;Torii et al, 1992;Zontak et al, 1998). Thermography is a non-invasive technique that can reveal and visualize differences in temperature distribution on the skin surface of an individual (Torii et al, 1992;Zontak et al, 1998).…”

“…Thermography is a non-invasive technique that can reveal and visualize differences in temperature distribution on the skin surface of an individual (Torii et al, 1992;Zontak et al, 1998).…”