暑熱環境下の野球試合における審判員の水分摂取の影響

概要

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The purpose of this study was to examine the effect of umpires intake of water during a summertime baseball game, on serum and urinary biochemistological elements, body weight and physiological factors.Twenty-eight umpires were classified into two groups. Group W was composed of 14 umpires who had water white those who did not were group C. Group W had 250ml of water that was cooled to about 5°C after the 5th inning of the game.The game was played in the following environment: atmosphere temperature was 31°C; wet-bulb temperature was 26°C; blackglove temperature was 40°C; the velocity of the wind was 1.18m/sec in bright sunshine on a hot and moist day.The results obtained were as follows. In group W, more body weight was lost than in group C, but statistically there was no significant difference. Urinary volume in group W became smaller than in group C, but statistically there was no significant difference. Water in blood increased in group W and decreased in group C but statistically there was significant difference. In both groups, oral temperature decreased, but only in group C was there a statistically significant difference. Although the intake of water increased the volume of perspiration, it did not dilute the concentrated blood, suppress the rise of body temperature, or result in a rise of low blood pressure.
日本衛生学会の論文