Association between directional variability of the isometric force vector and electromyography

• Project/Area Number: 22700592
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Physical education
• Research Institution: National Institute of Fitness and Sports in Kanoya
• Principal Investigator: YOSHITAKE Yasuhide 鹿屋体育大学, スポーツ生命科学系, 准教授 (70318822)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 力変動 / 筋電図 / 運動単位の発火頻度 / 表面筋電図 / 全波整流 / 相互相関関数 / 3軸力センサ / 筋疲労

Research Abstract

We have examined the followings ; 1) the low-frequency component of rectified electromyography(EMG) may provide temporal information on the instantaneous rate of force fluctuations(dF/dt) during steady contractions 2) low-frequency component of rectified EMG(<5 Hz) reflects the temporal characteristics and magnitude of the variability of motor unit discharge rate 3) the rectified EMG is associated with the unintended instantaneous rate of force fluctuations(dF/dt) and it's association is enhanced by development of muscle fatigue.

Research Products

• [Journal Article] Subthreshold electrical stimulation reduces motor unit discharge variability and decreases the force fluctuations of plantar flexion (2012)
  • Author(s): Kouzaki M, Kimura T, Yoshitake Y, Hayashi T, Moritani T.
  • Journal Title: Neurosci Lett Volume: 513(2) Issue: 2 Pages: 146-150
  • DOI: 10.1016/j.neulet.2012.02.020
  • Peer Reviewed
• [Journal Article] Knee extensor strength is associated with Mini-Mental State Examination scores in elderly men. (2012)
  • Author(s): Nakamoto H, Yoshitake Y, Takai Y, Kanehisa H, Kitamura T, Kawanishi M, Mori S.
  • Journal Title: Eur J Appl Physiol. Volume: 112 Issue: 5 Pages: 1945-1953
  • DOI: 10.1007/s00421-011-2176-9
  • Peer Reviewed
• [Journal Article] Body Mass-Based Exercise in Middle-Aged and Older Women (2011)
  • Author(s): Yoshitake Y, Takai Y, Kitamura T, Kawanishi M, Kanehisa H
  • Journal Title: Int J Sports Med Volume: 32 Issue: 12 Pages: 924-928
  • DOI: 10.1055/s-0031-1283177
  • Peer Reviewed
• [Journal Article] Association between knee extensor strength and EMG Activities during squat movement (2011)
  • Author(s): Fujita, E., Kanehisa, H., Yoshitake, Y., Fukunaga, T., Nishizono, H.
  • Journal Title: Medicine and Science in Sports and Exercise Volume: 43(12) Issue: 12 Pages: 2328-2334
  • DOI: 10.1249/mss.0b013e3182207ed8
  • Peer Reviewed
• [Journal Article] Association between knee extensor strength and EMG activities during squat movement. (2011)
  • Author(s): Fujita E, Kanehisa H, Yoshitake Y, Fukunaga T, Nishizono H.
  • Journal Title: Medicine & Science in Sports & Exercise. Volume: (印刷中)
  • Peer Reviewed
• [Journal Article] Muscle deoxygenation during sustained and intermittent isometric exercise in hypoxia (2010)
  • Author(s): Katayama K, Yoshitake Y, Watanabe K, Akima H, Ishida K.
  • Journal Title: Med Sci Sports Exerc Volume: 42(7) Issue: 7 Pages: 1269-1278
  • DOI: 10.1249/mss.0b013e3181cae12f
  • Peer Reviewed
• [Journal Article] 筋音図の発生機序と運動制御分野での応用性について (2010)
  • Author(s): 吉武康栄, 篠原稔
  • Journal Title: システム制御情報学会誌 Volume: 54(8) Pages: 327-331
  • NAID: 130006986535
  • Peer Reviewed
• [Journal Article] Muscle deoxygenation during sustained and intermittent isometric exercise in hypoxia. (2010)
  • Author(s): Katayama K, Yoshitake Y, Watanabe K, Akima H, Ishida K.
  • Journal Title: Medicine & Science in Sports & Exercise. Volume: 42(7) Pages: 1269-1278
  • Peer Reviewed
• [Presentation] レジスタンスエクササイズが認知機能に与える一過性の効果 (2011)
  • Author(s): 中本浩揮, 吉武康栄, 高井洋平, 前大純朗, 金久博昭, 福永哲夫
  • Organizer: 第66回日本体力医学会
  • Place of Presentation: 山口
  • Year and Date: 2011-09-17
• [Presentation] レジスタンスエクササイズが認知機能に与える一過性の効果 (2011)
  • Author(s): 中本浩揮, 吉武康栄, 高井洋平, 前大純朗, 金久博昭, 福永哲夫
  • Organizer: 第66回日本体力医学会
  • Place of Presentation: 海峡メッセ下関(山口県下関市)
  • Year and Date: 2011-09-17
• [Presentation] 増大・減少局面を含む力調節時における筋電図波形の意味 (2010)
  • Author(s): 吉武康栄
  • Organizer: 第65回日本体力医学会
  • Place of Presentation: 千葉
  • Year and Date: 2010-09-17
• [Presentation] 増大・減少局面を含む力調節時における筋電図波形の意味 (2010)
  • Author(s): 吉武康栄
  • Organizer: 第65回日本体力医学会
  • Place of Presentation: 千葉県市川市
  • Year and Date: 2010-09-17
• [Presentation] Surface EMG contains information on small force fluctuations during force-varying contraction (2010)
  • Author(s): Yoshitake Y, Shinohara M.
  • Organizer: The XVIII congress of the International Society of Electromyography and Kinesiology
  • Place of Presentation: デンマーク
  • Year and Date: 2010-06-18
• [Presentation] Surface EMG contains information on small force fluctuations during force-varying contraction (2010)
  • Author(s): Yoshitake Y, Shinohara M.
  • Organizer: The XVIII congress of the International Society of Electromyography and Kinesiology
  • Place of Presentation: デンマーク王国オールボー
  • Year and Date: 2010-06-18
• [Remarks]
  • URL: http://people.nifs-k.ac.jp/yasu_yoshitake/index.html
• [Remarks]
  • URL: http://www.nifs-k.ac.jp/property/researchers/syllabary/08/000421.html
• [Patent(Industrial Property Rights)] 運動用装具 (2010)
  • Inventor(s): 吉武康栄, 他数名
  • Industrial Property Rights Holder: 鹿屋体育大学、(株)デサント
  • Industrial Property Number: 2010-199489
  • Filing Date: 2010-09-07