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Establishment of novel hypoxic training strategies utilizing intermittent hypoxic exposure.

Research Project

Project/Area Number 20K23286
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0909:Sports sciences, physical education, health sciences, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

TAKEI NAOYA  東京大学, 大学院総合文化研究科, 特任研究員 (90883900)

Project Period (FY) 2020-09-11 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords低酸素 / 運動生理学 / トレーニング
Outline of Research at the Start

低酸素環境下での運動トレーニングは、アスリートの運動パフォーマンス向上のためだけではなく、一般人の健康保持増進にも有効です。低酸素環境下での運動トレーニングは高いトレーニング効果が得られうる一方で、酸素取り込み量が低下し、運動の強度を維持することが難しいという欠点があります。本研究では運動と休息を繰り返すインターバル運動において、運動時にのみ低酸素空気を吸気し、休息時には通常酸素空気を吸気する方法の効果について検討します。この方法により、低酸素環境によるトレーニング強度の低下を抑えつつ、低酸素トレーニングの効果が得られるか検証し、より効果的な低酸素トレーニング方策の確立を目指します。

Outline of Final Research Achievements

Hypoxic training can induce unique adaptations that are not attainable in normal oxygen condition. On the other hand, low oxygen availability can lead to decreased exercise performance/capacity. Therefore, this study investigated a method in which low-oxygen air was inhaled only during exercise intervals, while normal oxygen air was inhaled during rest periods. As a result, we were able to achieve a combination of low-oxygen-specific stress (reduction in intracellular oxygen partial pressure) while maintaining exercise performance. These findings indicate our new hypoxic training method possibly induces hypoxic-dependent adaptation and is easy to perform.

Academic Significance and Societal Importance of the Research Achievements

低酸素環境下での運動トレーニングは、アスリートのトレーニングのみならず、傷病者の運動療法にも用いられることがある。本研究では低酸素環境下でのインターバル運動中の運動時にのみ低酸素空気を吸気し、休息時には通常酸素空気を吸気することで、低酸素特異的なストレスを惹起しつつ、運動遂行を容易にできうることを示した。このことから、アスリートが低酸素トレーニングを用いてより強度の高い運動を行う際や傷病者の体力レベルに応じて運動処方をする際に役立つと考えられる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (5 results)

All 2022 2021 2020

All Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] No Influence of Acute Moderate Normobaric Hypoxia on Performance and Blood Lactate Concentration Responses to Repeated Wingates2021

    • Author(s)
      Takei Naoya、Kakinoki Katsuyuki、Girard Olivier、Hatta Hideo
    • Journal Title

      International Journal of Sports Physiology and Performance

      Volume: 16 Issue: 1 Pages: 154-157

    • DOI

      10.1123/ijspp.2019-0933

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Performance, Metabolic, and Neuromuscular Consequences of Repeated Wingates in Hypoxia and Normoxia: A Pilot Study2021

    • Author(s)
      Takei Naoya、Soo Jacky、Hatta Hideo、Girard Olivier
    • Journal Title

      International Journal of Sports Physiology and Performance

      Volume: Ahead of Print Issue: 8 Pages: 1-5

    • DOI

      10.1123/ijspp.2020-0654

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Short-Term Repeated Wingate Training in Hypoxia and Normoxia in Sprinters2020

    • Author(s)
      Takei Naoya、Kakinoki Katsuyuki、Girard Olivier、Hatta Hideo
    • Journal Title

      Frontiers in Sports and Active Living

      Volume: 2 Pages: 43-43

    • DOI

      10.3389/fspor.2020.00043

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Physiological and performance responses to repeated Wingate sprints with 2.5- or 4.5-min recoveries under acute hypoxia.2022

    • Author(s)
      Naoya Takei, Ryuji Muraki, Hideo Hatta
    • Organizer
      European college of Sports Science Congress
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 低酸素環境下でのスプリントインターバル運動時の乳酸代謝に対する急性の応答とトレーニングによる適応2021

    • Author(s)
      竹井尚也
    • Organizer
      第17回乳酸研究会
    • Related Report
      2020 Research-status Report
    • Invited

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Published: 2020-09-29   Modified: 2024-01-30  

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