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Investigation of hand tool and upper limb muscles activity on median nerve compression at the wrist

Research Project

Project/Area Number 18K17969
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionKyushu University

Principal Investigator

LOH PING YEAP  九州大学, 芸術工学研究院, 助教 (60814952)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordscarpal tunnel sydrome / precision grip / power grip / grip width / エルゴノミクス / carpal tunnel syndrome / office ergonomics / ergonomics / pinch / grip / median nerve / electromyography
Outline of Final Research Achievements

(1) Effects of pinch width and shape (convex, concave) on pinch grip. Three types of pinch, namely two-point pinch, three-point, pinch lateral pinch ,show higher pinch strength with wider pinch width. Additionally, the pinch strength by convex surface is higher than concave surface.
(2) Effects of wrist posture and grip strength on the median nerve compression. Wrist deviation and greater grip strength cause higher compression on the median nerve.

Academic Significance and Societal Importance of the Research Achievements

本研究では,握力(precision grip, power grip)と異なる握り幅による前腕筋活動と正中神経形状の変化を検討した.これらの結果は,作業中様々な握り幅や握り姿勢における前腕筋活動や正中神経への影響することを示した.作業関連筋骨格系疲労の対策として,エルゴノミクスデザインにつながる可能性を示唆する点で重要である.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (7 results)

All 2020 2019 2018

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results)

  • [Journal Article] An overview of hand postures and aging on morphological changes of the median nerve2019

    • Author(s)
      Ping Yeap Loh, Wen Liang Yeoh and Satoshi Muraki
    • Journal Title

      Journal of Physiological Anthropology

      Volume: 38 Issue: 1 Pages: 9-9

    • DOI

      10.1186/s40101-019-0201-6

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Ultrasound assessment of median nerve compression at office workstation2020

    • Author(s)
      Ping Yeap Loh, Shin Takesue, Wen Liang Yeoh, Satoshi Muraki
    • Organizer
      11th International Conference on Applied Human Factors and Ergonomics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Work-Related Musculoskeletal Disorder Among Office Worker2019

    • Author(s)
      Ping Yeap Loh, Satoshi Muraki
    • Organizer
      The 14th International Congress of Physiological Anthropology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Median nerve shape associated with typing and wrist posture2018

    • Author(s)
      Ping Yeap Loh
    • Organizer
      Marconi Research Conference
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Work-related carpal tunnel syndrome among computer users: Perspectives from ergonomics, Person-Environment-Occupation model, and biomechanical frame of reference2018

    • Author(s)
      Ping Yeap Loh, Satoshi Muraki
    • Organizer
      1st International Congress of Clinical Occupational Therapy
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Impacts of typing on different keyboard slopes on the deformation ratio of the median nerve2018

    • Author(s)
      Ping Yeap Loh, Wen Liang Yeoh, Satoshi Muraki
    • Organizer
      20th Congress International Ergonomics Association
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] A short review on the anatomy and biomechanics for grasp and pinch2018

    • Author(s)
      Ping Yeap Loh, Shin Takesue, Wen Liang Yeoh, Satoshi Muraki
    • Organizer
      5th SEANES International Conference on Human Factors and Ergonomics in South-East Asia
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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