2023 Fiscal Year Final Research Report
Validation of endurance training using hypoxic environments to improve aerobic metabolic capacity effectively.
Project/Area Number |
21K11380
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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 | Doshisha University |
Principal Investigator |
Takakura Hisashi 同志社大学, スポーツ健康科学部, 准教授 (20631914)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | 低酸素環境 / 持久的トレーニング / ミトコンドリア / 赤血球 / ヘモグロビン / ミオグロビン / 酸素供給機構 / 筋組織 |
Outline of Final Research Achievements |
In this study, muscle oxidative metabolism can be divided roughly into three factors: extracellular oxygen supply capacity, intracellular oxygen supply capacity, and intracellular oxygen utilization capacity. Stimulation with either hypoxia or training (TR) alone enhanced different factors involved in muscle oxidative metabolism. In contrast, endurance TR in a hypoxic environment and hypoxic exposure immediately after endurance TR showed counteracting effects on the factors involved in muscle oxidative metabolism. Therefore, this study aimed to examine the effect of alternating stimulation with endurance TR and short-term hypoxia exposure twice a day with sufficient time interval on the muscle oxidative metabolism. The alternating interventions in this study did not affect the factors related to muscle oxidative metabolism capacity, except hemoglobin concentration.
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Free Research Field |
スポーツ生化学
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Academic Significance and Societal Importance of the Research Achievements |
持久的トレーニング(TR)と低酸素暴露を同時や連続的に実施すると酸素供給能力やミトコンドリア生合成の変化が抑制される。そこで、それぞれの刺激を充分な時間間隔を空けて実施すれば、併用しても各刺激因子を単独で用いた際の適応が維持されるかもしれないと考え、両刺激を交互に行う低酸素暴露を用いたTR法の検証を実施した。これらの成果は筋の有酸素性代謝能力を効果的に向上させる新たな低酸素トレーニングプログラムの開発に繋がると考えられる。また、上記のTR方法が確立されれば、低酸素環境を用いたTRを高地に出向かずとも低酸素テントのような環境さえあれば実施でき、効率的な競技力の向上を望める。
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