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Interdependence between the biomechanical subtasks during walking

Research Project

Project/Area Number 21K17627
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 59030:Physical education, and physical and health education-related
Research InstitutionKobe University

Principal Investigator

Kibushi Benio  神戸大学, 人間発達環境学研究科, 助教 (30844998)

Project Period (FY) 2021-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Keywords筋シナジー / 筋協調 / 表面筋電図 / 歩行 / 運動学 / 動作分析
Outline of Research at the Start

ヒトの歩行動作は,接地時における荷重応答,足関節底屈・股関節伸展による推進力生成,遊脚の加速,減速といったサブタスクによって構成されている.いずれかのサブタスクを異なった動作パターンを出力するように制御するためには,他のサブタスクの制御にも変更を加えなければならないと考えられるが,これについてはほとんど理解が進んでいない.そこで本研究では,歩行動作を構成するサブタスク間での神経筋制御の相互依存性を明らかにすることを目指す.具体的には,遊脚速度を変更させるときに同期的な筋活動パターンがどのように調整されるかを明らかにする.

Outline of Final Research Achievements

The gait pattern is achieved by continuously executing subtasks such as load response and swing phase acceleration and deceleration, which are interdependent. This study aimed to clarify the interactions between subtasks from the perspective of muscle synergy (synchronous muscle activity patterns) by focusing on propulsion force generation and clearance height adjustment. Muscle synergies were extracted from surface electromyography measured while adjusting the muscle activity around the ankle joint and adjusting the propulsion force and clearance height. The results revealed that while individual muscles may have an impact on other subtasks, adjusting the ankle dorsiflexors did not affect muscle synergies.

Academic Significance and Societal Importance of the Research Achievements

本研究では,足関節底屈筋の活動を調整する場合,筋シナジー単位では他のサブタスクに影響しないものの,個々の筋レベルでは影響することが明らかになった.この成果は,これまで知られなかったサブタスク間での相互依存性について理解が深められたという学術的な意義がある.また,サブタスク間の相互依存性をふまえたリハビリテーションやトレーニング方法の考案につながる可能性がある.

Report

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

    (5 results)

All 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (2 results) (of which Invited: 1 results)

  • [Journal Article] Modular control of muscle coordination patterns during various stride time and stride length combinations2022

    • Author(s)
      Kibushi Benio、Moritani Toshio、Kouzaki Motoki
    • Journal Title

      Gait & Posture

      Volume: 94 Pages: 230-235

    • DOI

      10.1016/j.gaitpost.2021.04.006

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Auditory sEMG biofeedback for reducing muscle co‐contraction during pedaling2022

    • Author(s)
      Kibushi Benio、Okada Junichi
    • Journal Title

      Physiological Reports

      Volume: 10 Issue: 10

    • DOI

      10.14814/phy2.15288

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Disturbance of neural coupling between upper and lower limbs during gait transition2021

    • Author(s)
      Kibushi Benio、Kihira Naoto、Moritani Toshio、Kouzaki Motoki
    • Journal Title

      Neuroscience Letters

      Volume: 761 Pages: 136100-136100

    • DOI

      10.1016/j.neulet.2021.136100

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 筋電図バイオフィードバックによる歩行中の身体重心加速度の低減2022

    • Author(s)
      木伏紅緒, 前角馨, 木村哲也
    • Organizer
      計測自動制御学会 ライフエンジニアリング部門シンポジウム2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 歩行におけるモジュール式制御機構2021

    • Author(s)
      木伏紅緒
    • Organizer
      計測自動制御学会 ライフエンジニアリング部門シンポジウム2021
    • Related Report
      2021 Research-status Report
    • Invited

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Published: 2021-04-28   Modified: 2024-01-30  

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