Core Temperature Measurement
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Climatic injuries, including hypothermia, hyperthermia and heat stroke, are common in many sports activities. Body core temperature (Tc) measurement for the sportsperson can influence individual performance and may help to prevent injuries. Monitoring internal body Tc accurately requires invasive methods of measurement. The mercury thermometer, most commonly used to measure oral temperature (Toral), has been almost exclusively the only instrument for measuring Tc since the 18th century. Rectal (Tre) and oesophageal temperatures (Toes) have been the most preferred measurement sites employed in thermoregulatory investigations. However, these measurement sites (Tre, Toes, Toral), and the methods used to measure Tc at these sites, are not convenient. Toral measurements are not always possible or accurate. Toes is undesirable because of the difficulty of inserting the thermistor, irritation to nasal passages and general subject discomfort. Tre is not suitable under many circumstances as it is labour intensive and has a prolonged response time. However, Tre remains the most accurately available method for monitoring Tc in thermal illness that occurs during sports activities. In addition, Tre and Toes require wire connections between the thermistor and the monitoring device. The purpose of this paper is to review the various existing methods of Tc measurements in order to focus on the breakthrough needed for a simple, noninvasive, universally used device for Tc measurement which is essential for preventing climatic injuries during sports events.
KeywordsTympanic Membrane Smite Mercury Thermometer Oesophageal Temperature Measure Body Temperature
The authors have provided no information on sources of funding or on conflicts of interest directly relevant to the content of this review.
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