[RESULTS] Bland-Altman plots demonstrated mean bias limits of agreement between the thermistors and iButtons as follows ( rest , exercise , recovery ) : -0.01 0.04 , 0.26 0.85 , -0.37 0.98 C ; thermistors and infrared thermometer : 0.34 0.44 , -0.44 1.23 , -1.04 1.75 C ; thermistors and infrared camera ( rest , recovery ) : 0.83 0.77 , 1.88 1.87 C. Pairwise comparisons of [ Formula : see text ] found significant differences ( p < 0.05 ) between thermistors and both infrared devices during resting conditions , and significant differences between the thermistors and all other devices tested during exercise in the heat and recovery .