2013 Fiscal Year Final Research Report

Effects of temperature and volume of fluid intake on thermoregulatory and cardiovascular responses during prolonged exercise in the heat

Research Project

Project/Area Number	23500769
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Research Field	Sports science
Research Institution	Osaka International College
Principal Investigator	OGURA Yukio 大阪国際大学短期大学部, その他部局等, 教授 (00300301)
Co-Investigator(Kenkyū-buntansha)	INOUE Yoshimitsu 大阪国際大学, 人間科学部, 教授 (70144566) KONDO Narihiko 神戸大学, 人間発達環境学研究科, 教授 (70215458)
Project Period (FY)	2011 – 2013
Keywords	飲水温 / 水分摂取量 / 直腸温 / 体温調節 / 自由飲水 / 発汗量 / 脱水 / 熱中症
Research Abstract	The effects of fluid intake on thermoregulatory and cardiovascular responses during prolonged exercise in the heat were examined by measuring the effects on body temperature of: 1) fluid temperature of 5, 15, 25 or 35 degrees C with constant intake volume, 2) intake volume during sports activity in summer, and 3) fluid temperature and volume with intake ad libitum. The results suggest that intake fluid temperature significantly affected body temperature during prolonged exercise in a hot environment, even within the fluid temperature range of 5-15 degrees C, and that intake of fluid at a temperature of 5 degrees C can be recommended as a strategy for physically cooling the body in order to prevent heat disorders during exercise in the heat.

(3 results)