2010 Fiscal Year Final Research Report

The physiological implication of ventilatory response at the onset of exercise

Research Project

Project/Area Number	21800074
Research Category	Grant-in-Aid for Research Activity Start-up
Allocation Type	Single-year Grants
Research Field	Sports science
Research Institution	Aichi Shukutoku University
Principal Investigator	HOTTA NORIO Aichi Shukutoku University, 健康医療科学部, 助教 (60548577)
Research Collaborator	ISHIDA Koji 名古屋大学, 総合保健体育科学センター, 教授 (50193321) KOGA Shunsaku 神戸芸術工科大学, デザイン学部, 教授 (50125712)
Project Period (FY)	2009 – 2010
Keywords	運動生理学 / 運動開始 / 酸素摂取量 / 酸素摂取動態 / 換気亢進 / Phase I
Research Abstract	In the living body, the regulation of breathing functions in accordance with the metabolic demand of active muscles. However, the ventilatory response at the onset of exercise rapidly increases even when there are still few demands for oxygen in the active muscle. In this study, we examined the physiological implications of this. The response speed of oxygen uptake was faster when we increased 20-second breathing immediately after the start of exercise. On the other hand, the oxygen uptake response speed slowed when we reduced 20-second breathing just after the start of exercise. These results suggest that the initial rapid increase of breathing at the onset of exercise has physiological implications that hasten oxygen uptake in response to exercise.