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Evaluation and validity of the distance between the center of buoyancy and the center of mass for swimmers

Research Project

Project/Area Number 23500761
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Sports science
Research InstitutionBiwako Seikei Sport College

Principal Investigator

WAKAYOSHI kohji  びわこ成蹊スポーツ大学, スポーツ学部, 教授 (30191729)

Project Period (FY) 2011-04-28 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords水泳 / 浮力 / 浮心 / 重心 / パフォーマンス / 水平姿勢 / 換気量 / 水泳競技 / 推進力 / 形状抵抗 / 肩関節 / 浮心位置 / 重心位置 / 水泳不得意者 / けのび / 有浮力水着 / 浮心重心間距離
Outline of Final Research Achievements

we set our goal to construct a real-time measuring system for the distance (D) between center of buoyancy (CB) and center of mass (CM), measuring the vertical direction of force on the hands and legs corresponding to the changes in the ventilation volume, where the swimmer is in a horizontal posture in the water and is breathing freely with a snorkel, and to examine the relationship between D and swimming performance based on changes in the force exerted in a vertical direction on hands and feet with changes in lung ventilation.
The relationship between the ventilation volume and force exerted in a vertical direction on the hand area and leg area, and D indicated extremely good linearity, respectively. Moreover, D in the neutral buoyancy of the swimmers was significantly shorter than that of non-swimmers. Therefore, it is thought that this measuring system can be utilized as an effective method for evaluating swimming performance.

Report

(5 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (13 results)

All 2015 2014 2013 2012

All Journal Article (3 results) (of which Peer Reviewed: 1 results) Presentation (10 results)

  • [Journal Article] The Effects of Breathing on Center of Buoyancy and Buoyancy Torque in Junior Elite Swimmers2015

    • Author(s)
      Watanabe Y., Wakayoshi K., Nomura T., Tachi M.
    • Journal Title

      Proceeding of the 1st Asia-Pacific Conference on Coaching Science

      Volume: Web Journal Pages: 127-128

    • Related Report
      2014 Annual Research Report
  • [Journal Article] The Effect of Breathing on the Distance Between Center of Buoyancy and Center of Mass in Competitive Swimmers.2014

    • Author(s)
      Watanabe Y., Wakayoshi K., Nomura T.
    • Journal Title

      SPORT MONT

      Volume: XII Pages: 98-104

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 水泳選手における腹式呼吸トレーニングは浮心位置を変えることができるか?2012

    • Author(s)
      若吉浩二,渡邊泰典
    • Journal Title

      体力科学

      Volume: vol.61, no.6 Pages: 673-673

    • Related Report
      2012 Research-status Report
  • [Presentation] 学生スイマーと水泳不得意学生を対象とした肺気量変化に伴う浮力および浮心重心間距離の比較2014

    • Author(s)
      若吉浩二、渡邉泰典、白木孝尚
    • Organizer
      日本体育学会第65回大会
    • Place of Presentation
      岩手県
    • Year and Date
      2014-08-26 – 2014-08-28
    • Related Report
      2014 Annual Research Report
  • [Presentation] Real-time Measuring System of the Distance Between the Center of Buoyancy and the Center of Gravity for Swimmers.2014

    • Author(s)
      Watanabe, Y., Wakayoshi, K., Shiraki, T.
    • Organizer
      XIIth International Symposium for Biomechanics and Medicine in Swimming
    • Place of Presentation
      オーストラリア
    • Year and Date
      2014-04-28 – 2014-05-02
    • Related Report
      2014 Annual Research Report
  • [Presentation] The Effect of Breathing on the Distance Between Center-of-buoyancy and Center-of-mass in Competitive Swimmers.2014

    • Author(s)
      Watanabe, Y., Wakayoshi, K., Shiraki, T., Tachi, M., Nomura, T.
    • Organizer
      11th International Scientific Conference on Transformation Processes in Sport
    • Place of Presentation
      モンテネグロ
    • Year and Date
      2014-04-03 – 2014-04-06
    • Related Report
      2014 Annual Research Report
  • [Presentation] The Effect of Breathing on the Distance Between Center-of-buoyancy and Center-of-mass in Competitive Swimmers2014

    • Author(s)
      Watanabe, Y., Wakayoshi, K., Shiraki, T., Tachi, M., Nomura, T.
    • Organizer
      11th International Scientific Conference on Transformation Processes in Sport
    • Place of Presentation
      Podgorica, Montenegro
    • Related Report
      2013 Research-status Report
  • [Presentation] Real-time Measuring System of the Distance Between the Center of Buoyancy and the Center of Gravity for Swimmers2014

    • Author(s)
      Watanabe, Y., Wakayoshi, K., Shiraki, T
    • Organizer
      XIIth International Symposium for Biomechanics and Medicine in Swimming
    • Place of Presentation
      Canberra, Australia
    • Related Report
      2013 Research-status Report
  • [Presentation] 練習用有浮力水着は水中水平姿勢保持にどのように作用するか?―浮心重心間距離とパフォーマンスとの関係―2013

    • Author(s)
      渡邉泰典、白木孝尚、若吉浩二、来田宣幸、野村照夫
    • Organizer
      第68回日本体力医学会大会
    • Place of Presentation
      東京
    • Related Report
      2013 Research-status Report
  • [Presentation] 浮力・浮心重心間距離の即時測定システムの構築2012

    • Author(s)
      若吉浩二,渡邊泰典,白木孝尚
    • Organizer
      2012年日本水泳・水中運動学会
    • Place of Presentation
      福岡県福岡市
    • Related Report
      2012 Research-status Report
  • [Presentation] 意図的な呼吸方法の質的変容は浮心‐重心間距離の短縮に作用するか2012

    • Author(s)
      渡邊泰典,若吉浩二,白木孝尚
    • Organizer
      2012年日本水泳・水中運動学会
    • Place of Presentation
      福岡県福岡市
    • Related Report
      2012 Research-status Report
  • [Presentation] 水泳選手における腹式呼吸トレーニングは浮心位置を変えることができるか?2012

    • Author(s)
      若吉浩二,渡邊泰典
    • Organizer
      第67回日本体力医学会大会
    • Place of Presentation
      岐阜県岐阜市
    • Related Report
      2012 Research-status Report
  • [Presentation] 有浮力水着の着用が子供の泳能力に及ぼす影響2012

    • Author(s)
      宝来毅,若吉浩二,立正伸
    • Organizer
      第25回日本トレーニング科学会大会
    • Place of Presentation
      滋賀県草津市
    • Related Report
      2012 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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