The reliability of adolescent thermoregulatory responses during a heat acclimation protocol

this study investigated the between trial variation of thermoregulatorymeasures during a heat acclimation protocol. eight14-16 y old boys completed three bouts of 20-min cycling at 45% peak vo2 in a hot environment (35.1 ± 1.2 °c and 46.4 ± 1.0% relative humidity) on two occasions separated by a minimumof 24 h. reliability was assessed through analysis of withinsubjectvariation, the change in the mean, and retest correlationfor measurements of aural temperature (tau), mean skin temperature(tsk), heart rate (hr) and oxygen uptake (vo2). betweentrial differences were low for tau, tskbout1, tskbout2and3 andhr with coefficients of variation 0.6 %, 1.5 %, 0.5 % and 4.0%, respectively. the results demonstrate good reliability thatwill allow future investigators to precisely determine the extentof heat acclimation protocols in relation to the measurementerror.