2022 Fiscal Year Final Research Report
Effect of respiratory muscle lead on cardio-respiratory response during hypoxic exercise: Implication for respiratory training
Project/Area Number |
20K11334
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 59020:Sports sciences-related
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Research Institution | Osaka Kyoiku University |
Principal Investigator |
Ogawa Takeshi 大阪教育大学, 教育学部, 准教授 (70451698)
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Keywords | 低酸素 / 運動 / 呼吸筋 / 換気量 / 循環 / トレーニング |
Outline of Final Research Achievements |
This project was to investigate whether respiratory muscle training and respiratory muscle loading exercises affect the mechanisms of the regulation of the respiratory and circulatory response to hypoxia. In a series of studies, we have found that: 1) Inspiratory loading during exercise increases the circulatory response and oxygen uptake, increasing inspiratory load from 20% of the maximal inspiratory load during respiratory muscle training. 2) Hypoxic inhalation does not affect the increase in cardiac output or vascular resistance due to inspiratory loading but decreases tissue oxygen levels during hypoxia compared to normoxia. 3) Four weeks of inspiratory muscle training did not alter respiratory chemosensitivity, a regulatory mechanism.
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Free Research Field |
運動生理学
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Academic Significance and Societal Importance of the Research Achievements |
本研究課題は、呼吸筋トレーニングや吸気負荷が低酸素下運動時の呼吸循環調節機能に及ぼす影響を調べるものであった。呼吸筋トレーニングは臨床スポーツおよび医療現場で用いられる手法であり、その奏功メカニズムについて、吸気負荷が末梢循環応答をもたらすもの、呼吸調節機能には影響ないことを明らかにし、最適な呼吸筋トレーニング法の開発に応用できる基礎的研究となった。 本研究の成果は、学会発表や国際論文誌などで公表され、健康スポーツ科学の領域において一定の評価を得るに至り、スポーツの指導現場において即応用可能な先進的・実践的な示唆が得た。
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