New mechanisms for heat stroke during exercise in the heat and development of the countermeasures

2016 Fiscal Year Final Research Report

• Project/Area Number: 25242061
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Sports science
• Research Institution: University of Tsukuba
• Principal Investigator: NISHIYASU Takeshi 筑波大学, 体育系, 教授 (90237751)
• Co-Investigator(Kenkyū-buntansha): 林 恵嗣 静岡県立大学短期大学部, 一般教養等, 准教授 (00431677) ; 本田 靖 筑波大学, 体育系, 教授 (20165616) ; 近藤 徳彦 神戸大学, 人間発達環境学研究科, 教授 (70215458) ; 小川 剛司 大阪教育大学, 教育学部, 講師 (70451698) ; 前田 清司 筑波大学, 体育系, 教授 (30282346)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 体温調節 / 換気調節 / 運動

Outline of Final Research Achievements

Elevations in body temperature at rest and during exercise lead to increase in ventilation, which can reduce arterial CO2 pressure (PaCO2) and, in turn, cerebral blood flow (CBF) and thermoregulatory response. We investigated 1) whether humans can voluntarily suppress hyperthermic hyperventilation during prolonged exercise and passive heating at rest, and 2) the effects of voluntary breathing control on PaCO2, CBF, sweating and skin blood flow. Our results indicated that during prolonged exercisein the heat and passive heating at rest, humans can voluntarily suppress hyperthermic hyperventilation, and this suppression mitigates changes in PaCO2 and CBF.

Free Research Field

運動生理学　環境生理学