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Development of a new hydrodynamic analysis method for swimming underwater motion and elucidation of its mechanism

Research Project

Project/Area Number 20H04064
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 59020:Sports sciences-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

TAKAGI Hideki  筑波大学, 体育系, 教授 (80226753)

Co-Investigator(Kenkyū-buntansha) 角川 隆明  筑波大学, 体育系, 助教 (00740078)
中島 求  東京工業大学, 工学院, 教授 (20272669)
仙石 泰雄  筑波大学, 体育系, 准教授 (30375365)
下門 洋文  新潟医療福祉大学, 健康科学部, 講師 (50757911)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Fiscal Year 2023: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords水泳 / 流体力学 / バイオメカニクス / 流れの可視化 / コンピュータシミュレーション / 最適化 / コンピューターシミュレーション
Outline of Research at the Start

水泳水中運動の特徴として,陸上と同一の運動をしても生体への影響は大きく異なる.異なるが故に陸上では得られない運動効果が水中での運動には期待できるわけだが,実はヒトが水中で運動を行った場合,水から受ける力がどのように,どれくらい生体に作用するのか?十分明らかになっていない.そこで本研究では,いくつかの最新流体力学的解析手法を組み合わせ,これまで困難とされてきた,水泳水中運動中の流体力の発生メカニズムを解明するとともに,生体への負荷量を正確に定量できる方法論を確立し,水中リハビリテーションにおける運動処方の指標,あるいはトップスイマーの傷害予防の指針となる知見を得ることを目指す.

Outline of Final Research Achievements

Swimming in water is expected to provide exercise benefits that cannot be achieved on land, but how and to what extent do the forces received from the water act on the organism when humans exercise in water? However, how and to what extent the forces received from the water act on the body when humans exercise in water is not fully understood. The aim of this study was to elucidate the mechanism of hydrodynamic force generation during swimming, which has been considered difficult, by combining several state-of-the-art hydrodynamic analysis methods. As a result, it was shown for the first time that, in contrast to the generation mechanism assuming a quasi-steady state, the unsteady flow due to vortex generation induces a sudden drop in pressure (negative pressure) on the back surfaces of the hands and feet, resulting in a large hydrodynamic force.

Academic Significance and Societal Importance of the Research Achievements

これまでに独自に開発をしてきた水泳水中運動における先端的な計測技術を融合し,新たな方法論を確立することを目指した.学術的意義としては,ヒトの水泳水中運動について,流体工学,バイオメカニクス,計算科学などのさまざまの学問領域の知見を統合することより,新たな学際領域の創成へとつながることが期待される.また社会的意義としては,老若男女を問わず,競技,リクリエーション,リハビリ等,幅広い目的で実施される水泳水中運動において,生体への負荷量を正確に定量できる方法論を確立することで,水中リハビリテーションにおける運動処方の指標,あるいはトップスイマーの傷害予防などの指針となる知見を得ることが期待される.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (27 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (5 results) Journal Article (12 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 12 results,  Open Access: 10 results) Presentation (8 results) (of which Int'l Joint Research: 1 results) Remarks (2 results)

  • [Int'l Joint Research] Heriot-Watt University(英国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Norwegian School of Sport Sciences(ノルウェー)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] The University of Sydney(オーストラリア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Porto(ポルトガル)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Norwegian School of Sport Sciences(ノルウェー)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Impact of variations in swimming velocity on wake flow dynamics in human underwater undulatory swimming2024

    • Author(s)
      Nakazono Yusaku、Shimojo Hirofumi、Sengoku Yasuo、Takagi Hideki、Tsunokawa Takaaki
    • Journal Title

      Journal of Biomechanics

      Volume: 165 Pages: 112020-112020

    • DOI

      10.1016/j.jbiomech.2024.112020

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Underwater undulatory swimming propulsion mechanism of left lower limb deficient swimmer using PIV method2023

    • Author(s)
      Yusaku Nakazono, Hirofumi Shimojo, Hideki Takagi, Yasuo Sengoku, TakaakiTsunokawa
    • Journal Title

      XIVth International Symposium on Biomechanics and Medicine in Swimming Proceedings

      Volume: 1 Pages: 353-358

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Relationship between fluid force acting on a foot and muscle activity of lower limb in breaststroke kicking2023

    • Author(s)
      Yamakawa, K. K. , Homoto, K. , Nakazono, Y. , Tsunokawa, T. , Takagi, H. , Sengoku, Y.
    • Journal Title

      XIVth International Symposium on Biomechanics and Medicine in Swimming Proceedings

      Volume: 1 Pages: 1-5

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Athlete-specific optimizing simulation of armstroke in crawl swimming considering individual shoulder joint torque characteristics2023

    • Author(s)
      Nakashima, M. , Tsuchiya, S. , Toyoda, R. , Kuramoto, A. , Koga, D. , Takagi, H.
    • Journal Title

      XIVth International Symposium on Biomechanics and Medicine in Swimming Proceedings

      Volume: 1 Pages: 349-352

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Wake flow visualization around swimmer's foot and thrust force estimation at an indoor swimming pool2023

    • Author(s)
      Shimojo, H. , Yamashiro, S. , Ichikawa, H. , Shimoyama, Y. , Tsunokawa, T. , Sengoku, Y. , Takagi, H.
    • Journal Title

      XIVth International Symposium on Biomechanics and Medicine in Swimming Proceedings

      Volume: 1 Pages: 501-504

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Changes in Kinematics and Muscle Activity With Increasing Velocity During Underwater Undulatory Swimming2022

    • Author(s)
      Yamakawa Keisuke Kobayashi、Shimojo Hirofumi、Takagi Hideki、Sengoku Yasuo
    • Journal Title

      Frontiers in Sports and Active Living

      Volume: 4

    • DOI

      10.3389/fspor.2022.829618

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Relationship Between Hand Kinematics, Hand Hydrodynamic Pressure Distribution and Hand Propulsive Force in Sprint Front Crawl Swimming2022

    • Author(s)
      Koga Daiki、Tsunokawa Takaaki、Sengoku Yasuo、Homoto Kenta、Nakazono Yusaku、Takagi Hideki
    • Journal Title

      Frontiers in Sports and Active Living

      Volume: 4

    • DOI

      10.3389/fspor.2022.786459

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] How Technique Modifications in Elite 100m Swimmers Might Improve Front Crawl Performances to Podium Levels: Swimming ‘Chariots of Fire’2021

    • Author(s)
      Sanders Ross Howard、Takagi Hideki、Vilas-Boas J. Paulo
    • Journal Title

      Sports Biomechanics

      Volume: - Issue: 12 Pages: 1-20

    • DOI

      10.1080/14763141.2021.1998590

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Kinematic and kinetic parameters to identify water polo players’ eggbeater kick techniques2021

    • Author(s)
      Kawai Eisuke, Gonjo Tomohiro, Takagi Hideki
    • Journal Title

      Sports Biomechanics

      Volume: - Issue: 12 Pages: 1-12

    • DOI

      10.1080/14763141.2021.1995477

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Kinetics of four limb joints during kick-start motion in competitive swimming2021

    • Author(s)
      Sakai Shin、Koike Sekiya、Takeda Tsuyoshi、Sengoku Yasuo、Homma Miwako、Takagi Hideki
    • Journal Title

      Sports Biomechanics

      Volume: - Issue: 10 Pages: 1-19

    • DOI

      10.1080/14763141.2021.1963465

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] How do swimmers control their front crawl swimming velocity? Current knowledge and gaps from hydrodynamic perspectives2021

    • Author(s)
      Takagi Hideki、Nakashima Motomu、Sengoku Yasuo、Tsunokawa Takaaki、Koga Daiki、Narita Kenzo、Kudo Shigetada、Sanders Ross、Gonjo Tomohiro
    • Journal Title

      Sports Biomechanics

      Volume: ahead-of-print Issue: 12 Pages: 1-20

    • DOI

      10.1080/14763141.2021.1959946

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Relationship between stroke frequency and hand propulsive force in the front crawl2021

    • Author(s)
      古賀大樹, 角川隆明, 仙石泰雄, 本間三和子, 高木英樹
    • Journal Title

      Taiikugaku kenkyu (Japan Journal of Physical Education, Health and Sport Sciences)

      Volume: 66 Issue: 0 Pages: 207-218

    • DOI

      10.5432/jjpehss.20123

    • NAID

      130008031194

    • ISSN
      0484-6710, 1881-7718
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] The difference in active drag between front crawl and backstroke: a kinematic approach2023

    • Author(s)
      Narita, K. , Gonjo, T. , Takagi, H.
    • Organizer
      IVth International Symposium on Biomechanics and Medicine in Swimming
    • Related Report
      2023 Annual Research Report
  • [Presentation] クロール泳中の身体セグメントの姿勢・動作速度から抵抗力を考える~圧力抵抗の観点から~2022

    • Author(s)
      成田健造,加地智哉,高木英樹
    • Organizer
      日本水泳・水中運動学会2022年次大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] PIV法を用いた水中ドルフィンキックの泳速度を向上させる要因の検討2022

    • Author(s)
      中園優作,下門洋文,角川隆明,仙石泰雄,高木英樹
    • Organizer
      日本水泳・水中運動学会2022年次大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 水中ドルフィンキックにおける泳速度が高い泳者の足部の流体力学的特徴2022

    • Author(s)
      古賀大樹,中園優作,角川隆明,仙石泰雄,高木英樹
    • Organizer
      日本水泳・水中運動学会2022年次大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 競泳キックスタートにおける下肢の筋活動解析&ー台上動作に着目してー2021

    • Author(s)
      浪尾大二郎,角川隆明,酒井紳,仙石泰雄,本間三和子,高木英樹
    • Organizer
      日本水泳・水中運動学会2021年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] PIV法を用いた水中ドルフィンキックの泳速度を向上させる要因の検討2021

    • Author(s)
      中園優作,下門洋文,角川隆明,仙石泰雄,高木英樹
    • Organizer
      日本水泳・水中運動学会2021年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 優れた巻き足技術を有する水球選手はどの様に推進力を生成しているのか?2021

    • Author(s)
      川合 英介,高木英樹
    • Organizer
      日本水泳・水中運動学会2021年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Hydrodynamic re-examination of underwater non-propulsive phase in front crawl2021

    • Author(s)
      Daiki Koga, Kenta Homoto, Takaaki Tsunokawa, Hideki Takagi
    • Organizer
      38th International Conference on Biomechanics in Sports
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Remarks] ドルフィンキックではスピードが上がるほど水流をうまく利用している

    • URL

      https://www.tsukuba.ac.jp/journal/medicine-health/20240308140000.html

    • Related Report
      2023 Annual Research Report
  • [Remarks] Fancy a Swim?

    • URL

      https://www.tsukuba.ac.jp/en/research-news/20210902153628.html

    • Related Report
      2021 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

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