Regional rates of sweat evaporation during leg and arm cycling.

Abstract

The rate of sweat evaporation from the arm, chest, back and thigh, aural temperature, skin temperature (arm, chest, back and thigh), heat production (derived from measurements of respiratory gas exchange) and heart rate were measured in 7 men during 15 minutes of leg or arm cycling at 32% of predicted maximum oxygen uptake (VO2 max). The regional sweat evaporation rates and changes in body temperature were similar during both forms of exercise. The peak rates of sweat evaporation from the arm, chest, back and thigh were 15.7 +/- 19.8, 25.0 +/- 21.6, 28.7 +/- 22.7 and 21.0 +/- 18.2 mg.cm-2 hr-1 during leg cycling and 13.2 +/- 11.6, 22.2 +/- 14.4, 27.6 +/- 14.7 and 19.2 +/- 13.3 (SD) mg.cm-2 hr-1 respectively during arm cycling. The sweat evaporation rates from the different body regions were not significantly different from one another.

Regional variations in transepidermal water loss, eccrine sweat gland density, sweat secretion rates and electrolyte composition in resting and exercising humans

“…( B ) shows variations in sweat gland output, derived by combining data from Figures 2B and 5A. Sources: Taylor et al [61], Machado-Moreira et al [62], Sato and Dobson [85], Patterson et al [156], Weiner [164], Patterson et al [191], Havenith et al [192], Smith et al [194], Takano et al [208], Kondo et al [87], Smith and Havenith [233], Machado-Moreira et al [224], Machado-Moreira et al [225], Gordon [227], Höfler [234], Ayling [235], Cabanac and Brinnel [236], Libert et al [237], Cotter et al [238] and Cotter et al [239]. …”

A Randomized Controlled Trial of Aspirin and Exertional Heat Stress Activation of Platelets in Firefighters during Exertion in Thermal Protective Clothing

“…Mean skin temperature was calculated as T sk = chest (0.25) + back (0.25) + thigh (0.3) + arm (0.2). 19 Following instrumentation, the subject was dressed in a standard uniform of long pants and a short-sleeve cotton T-shirt.…”

The effect of hyperhydration on physiological and perceived strain during treadmill exercise in personal protective equipment

“…Skin temperature was measured with surface thermistors held in place with adhesive electrodes placed over the sternal head of the pectoralis major muscle, the infraspinatis muscle, and the midpoint of the triceps brachii and quadriceps femoris muscles (Physitemp, New Jersey, USA). Mean skin temperature (T sk ) was calculated by using the formula T sk = chest (0.25) + back (0.25) + thigh (0.3) + arm (0.2) (Ayling 1986). …”