2020 Volume 70 Issue 2 Pages 35-51
In this study, 5 subjects of firefighters, who wore all equipment such as fireproof cloth and breathing apparatus, performed 2 times a stepping exercise for a maximum of 20 minutes in the exercise room with 25 °C or 40 °C temperature, having a rest for 30 minutes in between the exercises. They ingested 5 times 100 g water or ice slurry at 3 minutes intervals from 15 minutes before the 1st exercise and 6 minutes after the 1st exercise in order to cool the bodies by fluid intake. As the result of experiments, the high effects of ice slurry intake compared with water intake could be confirmed as the result of experiments are as follows: suppressing the increase of rectal temperature at a lower temperature increase and earlier after the 1st exercise in the exercise room with 40 °C, decreasing the rectal temperature more rapidly after the 1st exercise in the exercise room with 25 °C, reducing the increase of rectal temperature and exercise intensity by the 1st exercise in the exercise room with 40 °C at 23.8 % and 15.1 % respectively.
