Coherence analysis of human motor unit firings

2008 Fiscal Year Final Research Report

• Project/Area Number: 18500453
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Physical education
• Research Institution: Meiji University
• Principal Investigator: MIZUMURA Shinji Meiji University, 文学部, 教授 (50267358)
• Project Period (FY): 2006 – 2008
• Keywords: 随意運動 / 表面筋電気活動 / 筋内電気活動 / 運動単位 / 動員閾値 / 発射頻度3軸分力解析

Research Abstract

本研究は、ヒトが随意的に様々な筋活動を行う際に観察される筋の電気的信号と力信号を、表面電極或いはワイヤー電極と3軸分力計を用いて記録し、コヒーレンス解析などの周波数解析を中心とした筋電気信号の解析を行うことにより、ヒト随意運動時の中枢神経系の制御様式を推測することを目的とした。その結果、大腿筋群における表面筋電気信号の解析からは、拮抗筋活動レベルと発揮された力方向との関連性などが、筋内電気信号の解析からは、運動単位の動員閾値と発射頻度との関連性などが明らかとなった。

Research Products

• [Journal Article] Motor unit firings during voluntary isometric ramp and ballistic contractions in human vastus medialis muscle (2009)
  • Author(s): Mizumura, S., Maezawa, K., McGrath, F. K.
  • Journal Title: Proceedings of the XXVIIth International Conference on Biomechanics in Sports Pages: 4
  • Peer Reviewed
• [Journal Article] Relation between variation of first agonist burst and direction of force during isometric ballistic contraction at knee joint (2008)
  • Author(s): Mizumura, S.
  • Journal Title: Journal of Humanities Meiji University 14 Pages: 43-54
  • Peer Reviewed
• [Journal Article] Direction of isometric ballistic force is related to antagonistic muscle discharge (2008)
  • Author(s): Mizumura, S., Maezawa, K., Ohtsuki, T.
  • Journal Title: Proceedings of the XXVIth International Conference on Biomechanics in Sports Pages: 214-217
  • Peer Reviewed
• [Journal Article] すばやい力発揮の3軸分力解析 (2008)
  • Author(s): 水村信二
  • Journal Title: 明治大学人文科学研究所紀要 63巻 Pages: 175-184
  • Peer Reviewed
• [Journal Article] 大腿伸筋におけるすばやい力発揮の正確さ制御 (2008)
  • Author(s): 水村信二
  • Journal Title: 明治大学教養論集 428号 Pages: 159-173
• [Journal Article] 筋内電気活動の解析方法に関する研究 (2007)
  • Author(s): 水村信二
  • Journal Title: 明治大学人文科学研究所紀要 60巻 Pages: 273-287
• [Journal Article] Motor unit firing behavior during isometric constant-force contraction in human vastus medialis muscle
  • Author(s): Mizumura, S.
  • Journal Title: Journal of Humanities Meiji University Vol. 13 Pages: 23-35
• [Presentation] Motor unit firing behavior during isometric low-level constant-force contraction in human vastus medialis muscle (2008)
  • Author(s): Mizumura, S. Maezawa, K., Ohtsuki, T.
  • Organizer: 第63回日本体力医学会
  • Place of Presentation: 大分
  • Year and Date: 20080918-20
• [Presentation] RELATIONSHIP BETWEEN DIRECTION OF FORCE AND MUSCLE DISCHARGES DURING BALLISTIC KNEE EXTENSION FORCE PRODUCTION (2008)
  • Author(s): Mizumura, S.
  • Organizer: 日本バイオメカニクス学会第20回大会
  • Place of Presentation: 仙台
  • Year and Date: 2008-08-26
• [Presentation] DIRECTION OF ISOMETRIC BALLISTIC FORCE IS RELATED TO ANTAGONISTIC MUSCULE DISCHARGE (2008)
  • Author(s): Mizumura, S. Maezawa, K., Ohtsuki,T.
  • Organizer: XXXIth Congress of International Society of Biomechanics in Sports
  • Place of Presentation: Seoul, Korea
  • Year and Date: 2008-07-16
• [Presentation] Decrease in motor unit firing rates during isometric low - level constant-force contraction of the human vastus medialis muscle (2007)
  • Author(s): Kimura, M., Mizumura, S., Ohtsuki, T. & Maezawa, K.
  • Organizer: Abstract Book of the 12th Annual Meeting of European College of Sport Science
  • Year and Date: 20070000
• [Presentation] Multi-channel analysis of intramuscular electric signal during low and sustained force exertion (2006)
  • Author(s): Mizumura, S. & Ohtsuki, T.
  • Organizer: 日本バイオメカ学会大会論集, 第19回大会号
  • Year and Date: 20060000
• [Presentation] Multi-channel analysis of human intra-muscular electric signals (2006)
  • Author(s): Mizumura, S. & Ohtsuki, T.
  • Organizer: Proceedings of the 11th Congress of European College of Sport Science
  • Year and Date: 20060000
• [Presentation]
  • Author(s): Mizumura, S., Ohtsuki, T. & Maezawa, K.
  • Organizer: Multi-channel07