Impact of different climatic conditions on peak core temperature of elite athletes during exercise in the heat: a Thermo Tokyo simulation study

Objectives To evaluate how separate and combined climatic parameters affect peak core temperature during exercise in the heat using computer simulations fed with individual data. Methods The impact of eight environmental conditions on rectal temperature (Tre) was determined for exercise under heat stress using the Fiala-thermal-Physiology-and...

Core temperature affects scalp skin temperature during scalp cooling

Background

Evaluation of two cooling systems under a firefighter coverall

Firemen often suffer from heat strain. This study investigated two chest cooling systems for use under a firefighting suit. In nine male subjects, a vest with water soaked cooling pads and a vest with water perfused tubes were compared to a control condition. Subjects performed 30 min walking and 10 min recovery in hot conditions, while...

World Solar Challenge: warmte- en vochtbalans van de coureurs (World Solar Challenge: heat and fluid balance of the drivers).

In de warme Australische woestijn wordt jaarlijks een wedstrijd gehouden wie het snelst is met een auto op zonne-energie. De TU Delft is daarin een topper en wil ook de coureurs optimaal voorbereiden. In dit artikel wordt onderzocht hoe sterk de lichaamstemperatuur oploopt en hoeveel vocht wordt verloren tijdens een nagebootste race in de hitte....

Effects of wind application on thermal perception and self-paced performance

Physiological and perceptual effects of wind cooling are often intertwined and have scarcely been studied in self-paced exercise. Therefore, we aimed to investigate (1) the independent perceptual effect of wind cooling and its impact on performance and (2) the responses to temporary wind cooling during self-paced exercise. Ten male subjects...

Evaluation of two cooling systems under a fire fighter coverall

Initial heating in cold cars

During the initial minutes after entering a cold car, people feel uncomfortably cold. Six different warming systems were investigated in a small car in order to find out how to improve the feeling of comfort using 16 volunteers. The methods were: no additional warming next to a standard heating system in the car (1), heat pad in the back (2),...

Telemetry pill versus rectal and esophageal temperature during extreme rates of exercise-induced core temperature change

Core temperature measurement with an ingestible telemetry pill has been scarcely investigated during extreme rates of temperature change, induced by short high-intensity exercise in the heat. Therefore, nine participants performed a protocol of rest, (sub)maximal cycling and recovery at 30 °C. The pill temperature (T pill) was compared with the...

Evaluation of two cooling systems under a fire fighter coverall

Effect of warm-up and precooling on 15-km cycling performance in the heat

Wind cooling during a self-paced cycling time trial

Measurement and manipulation of body temperature in rest and exercise

Een te hoge of lage lichaamstemperatuur kan ernstige gevolgen hebben voor de gezondheid en het prestatievermogen. Het is dus belangrijk om lichaamstemperatuur makkelijk én betrouwbaar in de praktijk te kunnen meten, met name in een medische setting, in bepaalde arbeidsomstandigheden en in de sportwereld. Er zijn vele meetmethoden beschikbaar op...

Limitations of temperature measurement in the aural canal with an ear mould integrated sensor

Aural canal temperature measurement using an ear mould integrated sensor (Tac) might be a method suited for continuous non-invasive core temperature estimation in operational settings. We studied the effect of ambient temperature, wind and high intensity exercise on Tac and its ability to predict esophageal (Tes) and rectal temperatures (Tre)....

Non-invasive continuous core temperature measurement by zero heat flux

Reliable continuous core temperature measurement is of major importance for monitoring patients. The zero heat flux method (ZHF) can potentially fulfil the requirements of non-invasiveness, reliability and short delay time that current measurement methods lack. The purpose of this study was to determine the performance of a new ZHF device on the...

Infrared thermal imaging of the inner canthus of the eye as an estimator of body core temperature

Several studies suggest that the temperature of the inner canthus of the eye (Tca), determined with infrared thermal imaging, is an appropriate method for core temperature estimation in mass screening of fever. However, these studies used the error prone tympanic temperature as a reference. Therefore, we compared Tca to oesophageal temperature ...