The effects of postactivation potentiation and fatigue on muscle power of the dorsiflexors in old men

• Project/Area Number: 19700482
• 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: SHIMA Norihiro National Institute of Fitness and Sports in Kanoya, 体育学部, 助教 (70363653)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,200,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥300,000); Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2007: ¥1,900,000 (Direct Cost: ¥1,900,000)
• Keywords: 筋パワー / 筋電図 / 筋音図 / 足関節背屈動作 / 前脛骨筋 / 等張性筋収縮 / 角速度 / 加齢 / 足関節底屈 / 足関節背屈 / 短縮性筋収縮

Research Abstract

高齢者の繰り返しの最大筋パワー発揮による活動後増強と筋疲労との関係を明らかにすること目的とし、若者8名と高齢者8名を対象に、足関節背屈等尺性最大随意筋力の20%の負荷で、最大努力で等張-短縮性収縮を25回実施し、足関節背屈最大筋パワーと中枢性要因を示す筋電図と末梢性要因を示す筋音図を測定した結果、加齢による筋パワー発揮維持能力の低下には、中枢性要因よりも末梢性の要因が関与していることが示唆された。

Research Products

• [Journal Article] In vivo behaviour of human muscle architecture and mechanomyographic response using the interpolated twitch technique (2009)
  • Author(s): Ohta Y, Shima N, Yabe K
  • Journal Title: Journal of Electromyography and Kinesiology Volume 19,Issue 3
  • Peer Reviewed
• [Journal Article] In vivo behaviour of human muscle architecture and mechanomyographic response using the interpolated twitch technique (2009)
  • Author(s): Ohta Y, Shima N, Yabe K
  • Journal Title: Journal of Electromyography and Kinesiology Volume19, Issue3
  • Peer Reviewed
• [Journal Article] Relationship of muscle fatigue and muscle activity on functional performance tasks in older adults (2008)
  • Author(s): Jones GR, Rice CL, Shima N, Jakobi JM
  • Journal Title: Journal of Aging and Physical Activity Volume 16, Supplement 1
  • Peer Reviewed
• [Journal Article] Relationship of muscle fatigue and muscle activity on functional performance tasks in older adults (2008)
  • Author(s): Jones GR, Rice CL, Shima N, Jakobi JM
  • Journal Title: Journal of Aging and Physical Activity Volume16, Supplement1
  • Peer Reviewed
• [Journal Article] Superimposed mechanomyographic response at different contraction intensity in medial gastrocnemius and soleus muscles (2007)
  • Author(s): Ohta Y, Shima N, Yabe K.
  • Journal Title: International Journal of Sport and Health Science Volume 5 Pages: 63-70
  • Peer Reviewed
• [Journal Article] Mechanomyographic and electromyographic responses to maximal concentric contractions of dorsiflexors in young and old men (2007)
  • Author(s): Shima N, McNeil CJ, Rice CL
  • Journal Title: Medicine and Science in Sports and Exercise Volume 39 Supplement Pages: 433-433
  • Peer Reviewed
• [Journal Article] Mechanomyographic and electromyographic responses to maximal concentric contractions of dorsiflexors in young and old men (2007)
  • Author(s): Shima N, McNeil CJ, Rice CL
  • Journal Title: Medicine and Science in Sports and Exercise 39巻suppl. Pages: 433-433
  • Peer Reviewed
• [Journal Article] Superimposed mechanomyographic response at different contraction intensity in medial gastrocnemius and soleus muscles (2007)
  • Author(s): Ohta Y, Shima N, Yabe K
  • Journal Title: International Journal of Sport and Health Science 5巻 Pages: 63-70
  • Peer Reviewed
• [Presentation] Effect of postactivation potentiation on endurance time in the dorsiflexors (2008)
  • Author(s): Shima N, Ohta Y
  • Organizer: 13th Annual Congress European College of Sport Science
  • Place of Presentation: Estoril (Portugal)
  • Year and Date: 2008-07-12
• [Presentation] Effect of postactivation potentiation on endurance time in the dorsiflexors (2008)
  • Author(s): Shima N
  • Organizer: 13th Annual Congress European College of Sport Scienc
  • Place of Presentation: Estoril-Portugal
  • Year and Date: 2008-07-12
• [Presentation] In vivo behavior of muscle architecture and mechanomyographic response during interpolated twitch (2007)
  • Author(s): Ohta Y, Shima N, Yabe K.
  • Organizer: XXIth Congress of the International Society of Biomechanics
  • Place of Presentation: Taipei (Taiwan)
  • Year and Date: 2007-07-05
• [Presentation] In vivo behavior of muscle architecture and mechanomyographic response during interpolated twitch (2007)
  • Author(s): Ohta Y, Shima N, Yabe K
  • Organizer: XXIth Congress of the International Society of Biomechanics
  • Place of Presentation: Taipei, Taiwan
  • Year and Date: 2007-07-05