ニシムラ　ナオキ   NISHIMURA, Naoki   西村　直記 スポーツ科学部 スポーツ科学科 教授
言語種別	英語
発行・発表の年月	2019/01
形態種別	学術雑誌
査読	査読あり
標題	Effects of catechin-enriched ion beverage intake on thermoregulatory function in a hot environment
執筆形態	共同
掲載誌名	Journal of Physiological scienses
掲載区分	国外
出版社・発行元	Springer
巻・号・頁	69(1),pp.39-45
担当範囲	corresponding author
著者・共著者	Nishimura R, Nishimura N, Iwase S, Takeshita M, Katashima M, Katsuragi Y, Sato M
概要	We examined the effect of intake of a catechin-enriched ion beverage (Cat-I) on the thermoregulatory response in a hot environment. Eight healthy men were exposed to a hot environment for 90 min at an ambient temperature of 35 °C (relative humidity: 75%) combined with lower leg water immersion at 40 °C. At that time, either Cat-I, an ion beverage (Ion), or mineral water (Placebo) was consumed at three points: (1) at the start of lower leg immersion, (2) at 30 min after immersion, and (3) at 60 min after immersion. In all conditions, tympanic temperature (Tty) increased gradually during lower leg water immersion. However, the rate of increase of Tty tended to be suppressed after 30 min. The effect of drinking Cat-I had a limited detection period of approximately 60–70 min, and the rate of sweating was clearly increased with Cat-I compared with Ion and Placebo. Cat-I also tended to decrease the body temperature threshold at which sweating was induced compared with Ion or Placebo. These findings suggest that Cat-I efficiently suppressed the increase of body temperature in a hot environment.