TY  - JOUR
PY  - 2015//
TI  - Temperature measurement inside protective headgear: comparison with core temperatures and indicators of physiological strain during exercise in a hot environment
JO  - Journal of occupational and environmental hygiene
A1  - Mitchell, Joel B.
A1  - Goldston, Kelly R.
A1  - Adams, Amy N.
A1  - Crisp, Kelli M.
A1  - Franklin, Brian B.
A1  - Kreutzer, Andreas
A1  - Montalvo, Diego X.
A1  - Turner, Marcell G.
A1  - Phillips, Melody D.
SP  - 866
EP  - 874
VL  - 12
IS  - 12
N2  - INTRODUCTION: Non-invasive temperature monitoring with a sensor inside protective headgear may be effective in detecting temperatures that are associated with heat illness. <br><br>PURPOSE: To establish the relationship between in-hardhat temperatures (Tih) and core temperature (Tc) as measured by rectal (Tre) and esophageal (Tes) probes. <br><br>METHODS: Thirty males (age 24.57±4.32 yrs.) completed two trials: continuous submaximal exercise (CSE) and a series of high intensity 30-sec sprints (HIE) with a one-minute rest between each. Exercise in both conditions was in a 36° C environment (40% RH) while wearing a standard hardhat with sensors mounted on the forehead that were monitored remotely. Exercise continued until voluntary termination or until Tc reached 39.5°C. Temperatures, heart rate, cardiorespiratory, and perceptual responses were monitored throughout. A physiological strain index (PSI) was calculated from Tc and HR. <br><br>RESULTS: The final temperatures in the CSE condition were 38.77 ± 0.41, 38.90 ± 0.49 and 39.29 ± 0.58 °C and in the HIE condition, final temperatures were 38.76 ±0.37, 38.91±0.47 and 39.19±0.57 f (o)C for Tih, Tre and Tes, respectively. The PSI in CSE was 9.62±062, 9.18±1.11 and 10.04±1.05, and in the HIE condition 9.67±068, 9.29±0.99 and 9.86±1.02 based on Tih, Tre and Tes, respectively. <br><br>CONCLUSION: The general agreement between the Tih and other temperature measures along with the consistency as indicated by a low coefficient of variation (approx. 1%) in the recordings of the Tih sensors at the point of termination suggest that this device, or similar devices, may have application as a warning system for impending heat-related problems.<p />  <p>Language: en</p>
LA  - en
SN  - 1545-9624
UR  - http://dx.doi.org/10.1080/15459624.2015.1072631
ID  - ref1
ER  -