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Effects of Fluid Ingestion During Intermittent High Intensity Swimming Exercise on Thermoregulatory Responses and Performance


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タイトル: Effects of Fluid Ingestion During Intermittent High Intensity Swimming Exercise on Thermoregulatory Responses and Performance
著者: Taimura, Akihiro / Matsumoto, Takaaki / Lee, Jeong-Beom / Othman, Timothy / Yamauchi, Masaki / Sugawara, Masashi / Kosaka, Mitsuo
発行日: 1999年 9月30日
出版者: 長崎大学熱帯医学研究所 / Institute of Tropical Medicine, Nagasaki University
引用: 熱帯医学 Tropical medicine 41(2). p65-73, 1999
抄録: High intensity exercise in the heat causes major alterations in the circulatory and thermoregulatory functions resulting in reduced athletic performance. We investigated whether fluid ingestion during intermittent high intensity swimming exercise in warm water can mitigate adverse thermoregulatory and cardiovascular responses, and improve athletic performance. To do this, eight male college swimmers aged 22.8±1.0 yr, body weight 66.72±1.63kg and height 171.7±0.7cm were used. In a cross-over design, all eight subjects performed 20 sessions of intermittent 50m swims with a 1 min interval between each session when they were water replete (WR) or water deprived (WD). Oral temperature (To), heart rate (HR), plasma osmolarity (Posm), sweat water loss (SWL) and rating of perceived exertion (RPE) as well as swimming velocities (SV) were measured. No difference were observed in To, HR, SWL, and Posm between WR and WD conditions. However, WR maintained higher SV and lower RPE. In a second experiment involving a second set of college swimmers, a strong positive correlation was observed between SV and SWL (r=0.881, p<0.05). These findings reveal that during short duration high intensity intermittent swimming exercise lasting~12 mins, fluid intake did not influence cardiovascular and thermoregulatory responses, but improved athletic performance.
URI: http://hdl.handle.net/10069/4781
ISSN: 03855643
資料タイプ: Departmental Bulletin Paper
出現コレクション:第41巻 第2号

引用URI : http://hdl.handle.net/10069/4781

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