The effect of differences in environment temperature during ice slurry ingestion on body temperature and perceptual sensation

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  • アイススラリー摂取時の環境温度の違いが体温と主観的温度感覚に及ぼす影響
  • アイススラリー セッシュジ ノ カンキョウ オンド ノ チガイ ガ タイオン ト シュカンテキ オンド カンカク ニ オヨボス エイキョウ

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Abstract

<p>The purpose of this study was to clarify the effects on rectal temperature when ice slurry was ingested at different environmental temperatures. Seven healthy young male subjects participated in this study. Subjects were randomly assigned one of three experimental conditions in a climatic chamber: ice slurry (-1°C) ingestion at 35°C and 30% relative humidity (HOT), ice slurry (-1°C) ingestion at 25°C and 30% relative humidity (COOL), and cold drink (4°C) ingestion at 35°C and 30% relative humidity (CON). Subjects ingested 7.5 g/kg body mass of ice slurry or cold drink for 30 min after entering the climatic chamber. Then, subjects remained at rest for 1 h. Rectal temperature (Tre), mean skin temperature, and subjective thermal sensation were measured. With COOL (－0.66 ± 0.22°C), Tre was significantly reduced compared with HOT (－0.36 ± 0.21°C) and CON (－0.13 ± 0.13°C) conditions (P < 0.05). Tre continued to decrease until 25 min with COOL, and 15 min with HOT and CON conditions. Tre at the 60-min period with COOL was significantly lower compared to HOT and CON conditions (P < 0.05). These results demonstrated that ice slurry ingestion in a cooler environment can be effective cooling strategy, for example, when ingesting ice slurry before exercise on an athletic field in summer.</p>

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