To examine the efffectiveness of aural thermometry as an alternative to the criterion standard of rectal thermometry in patients with and those without EHS.Ī total of 49 patients with EHS (15 men, 11 women ) and 23 individuals without EHS (10 men, 13 women ) who were triaged to the finish-line medical tent for suspected EHS. No researchers have examined whether aural thermometry can accurately measure internal body temperature in patients with exertional heat stroke (EHS). The use of aural thermometry as a method for accurately measuring internal temperature has been questioned. IR-Tty is acceptable for core temperature monitoring during exercise in the heat when solar radiation is ≤ 500 W/m², and its accuracy increases when solar radiation is 250 W/m² under our study conditions. Percentage of target attainment within ± 0.3☌ between IR-Tty and Tre was higher in 250 W/m² (100 ± 0%) than 0 (93 ± 7%) and 500 (90 ± 10% P < 0.05) W/m². A positive correlation was found in 500 W/m² (rs = 0.51 P < 0.001) but not in 250 W/m² (rs = 0.04 P = 0.762) and 0 W/m² (rs = 0.04 P = 0.732), indicating a greater elevation in IR-Tty than Tre in 500 W/m². Spearman’s rank correlation coefficient (rs) demonstrated very strong (250 W/m², rs = 0.87) and strong (0 W/m², rs = 0.73 500 W/m², rs = 0.78) correlations between IR-Tty and Tre in all trials (P < 0.001).
#Pit of 100 trials tty trial
IR-Tty and rectal temperature (Tre) were similar before and during exercise in each trial (P > 0.05).
#Pit of 100 trials tty simulator
Three solar radiation conditions, 0, 250 and 500 W/m², were tested using a ceiling-mounted solar simulator (metal-halide lamps) over a 3 × 2 m irradiated area.
Eight healthy males completed stationary cycling trials at 70% peak oxygen uptake until exhaustion in an environmental chamber maintained at 30☌ with 50% relative humidity. We investigated the validity of infrared tympanic temperature (IR-Tty) during exercise in the heat with variations in solar radiation.
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