Role of CO2 on ventilation control during recovery from impulse exercise

2014 Fiscal Year Final Research Report

• Project/Area Number: 24500782
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Sports science
• Research Institution: Hokkaido University
• Principal Investigator: YANO Tokuo 北海道大学, 教育学研究科(研究院), その他特任教授 (80200559)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 肺換気量 / ｐH / 動脈血CO2分圧 / 神経性因子 / 液性因子

Outline of Final Research Achievements

There are many problems on mechnism of lung ventilation control.In the present study, ventilation during recovery from impulse exercsei is examined. First, in execise internsity which does not produce lactate, there is no effect of humoral facor but neural facor. We identified the the neural facor during recovery from impulse exercise. Secondly, when impulse exercise is repeated, blood lacate is increased but ventilation is not increased. This maintairance of ventilation kinetics is thought to be due to interaction of blood pH an blood Pco2. Thirdely, we examined the feedback loop from lung to carotid body. Time of the feedback loop was enhanced by increassed blood flow, suggesting the existence of feedback loop.

Free Research Field

運動生理学