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Investigating the Mechanisms of Motor Control in Sport Movements Demanding Both Speed and Accuracy

Research Project

Project/Area Number 23K19941
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 InstitutionKinjo University (2024)
Chukyo University (2023)

Principal Investigator

Murakami Hiroki  金城大学, 総合経済学部, 助教 (10975717)

Project Period (FY) 2023-08-31 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2024: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords速さと正確さのトレードオフ / 垂直跳び / エントロピー / 運動制御 / 速さと正確さ / 情報処理 / スポーツ動作 / 全身運動
Outline of Research at the Start

手部動作の実験結果から導かれた身体運動の特性を表す最も重要な原理の一つとされる「速さと正確さのトレードオフの関係」は,全身運動を要するスポーツ動作においても,その関係の成立の可否が検討されてきたが,統一的な知見がなくそのメカニズムには迫られていない.本研究では,速さと正確さの両方が要求されるスポーツ動作の本質に迫るために,その両方が要求される全身運動課題を実施し,本関係の現象の確認とそのメカニズムを検討する.具体的には,垂直跳び課題に着地位置の制御を加えた条件を導入し,Shannonの情報理論のアイデアを用いた軌道の情報処理特性を検討することで,スポーツ動作固有の制御メカニズムを解明する.

Outline of Final Research Achievements

The speed-accuracy trade-off, a well-established principle from studies of hand movements, has been the focus of research aiming to extend its applicability to full-body movements in sports. This study tested whether this framework also holds in ballistic whole-body actions by manipulating landing precision demands in a vertical jump task. We analyzed changes in motor output parameters and their control mechanisms. Specifically, the time from movement onset to takeoff was divided into two phases, and higher precision demands were associated with a longer preparation phase. Additionally, the magnitude and direction of the 3D velocity vector at takeoff varied with task conditions, indicating modulation of output intensity and directional control. These findings suggest that participants strategically adjust both movement intensity and timing in response to accuracy constraints, revealing adaptive motor control in high-demand whole-body actions.

Academic Significance and Societal Importance of the Research Achievements

本研究は、従来は手部の運動で扱われてきた速さと正確さのトレードオフ理論が、全身を用いた瞬発的な動作においても成立することを実証した点で学術的意義が大きい。精度要求が高まると動作準備にかける時間が延長されることが明らかとなり、事前計画型の運動制御戦略の存在を支持する結果が得られた。これらの知見は、スポーツにおける動作熟達の理解に加え、リハビリテーションやロボティクスなど精密動作が求められる場面への応用にも展望を与える。

Report

(3 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • Research Products

    (4 results)

All 2024 2023

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

  • [Journal Article] Mechanism for High-Precision Control of Movement at Maximum Output in the Vertical Jump Task2024

    • Author(s)
      Murakami Hiroki、Yamada Norimasa
    • Journal Title

      Entropy

      Volume: 26 Issue: 4 Pages: 300-300

    • DOI

      10.3390/e26040300

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Changes in movement speed control caused by accuracy requirement level using a vertical jump task2024

    • Author(s)
      Murakami Hiroki; Yamada Norimasa
    • Organizer
      29th Annual Congress of the European College of Sport Science in Glasgow
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Changes in movement speed control caused by accuracy requirement level using a vertical jump task2024

    • Author(s)
      Murakami Hiroki、Yamada Norimasa
    • Organizer
      ECSS Glasgow 2024
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] 垂直跳び課題における速さと正確さの制御メカニズム2023

    • Author(s)
      村上宏樹、山田憲政
    • Organizer
      日本スポーツ心理理学会第50回大会
    • Related Report
      2023 Research-status Report

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Published: 2023-09-11   Modified: 2026-01-16  

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