In Vivo Length-Force Relationships on Muscle Fiber and Muscle Tendon Complex in the Tibialis Anterior Muscle

• Oda Toshiaki

  Department of Life Sciences, University of Tokyo

• Kanehisa Hiroaki

  Department of Life Sciences, University of Tokyo

• Chino Kentaro

  Department of Life Sciences, University of Tokyo

• Kurihara Toshiyuki

  Department of Life Sciences, University of Tokyo

• Nagayoshi Toshihiko

  Graduate School of Human Sciences, Waseda University

• Kato Emika

  Graduate School of Human Sciences, Waseda University

• Fukunaga Tetsuo

  Faculty of Sports Sciences, Waseda University

• Kawakami Yasuo

  Faculty of Sports Sciences, Waseda University

抄録

The present study aimed to determine the differences in the length-force relationship between muscle fiber and muscle tendon complex (MTC) and to relate the shape of the length-force relationship to the architectural changes in MTC (the elongation of tendon structures and pennation angle changes). In six male subjects, tetanic contractions (2s at 50Hz) of the tibialis anterior muscle were induced electrically. At a steady state of tetanic contraction, the muscle fiber length and pennation angle were measured from ultrasonic images, and the muscle fiber force, tendon force, MTC length and elongation of tendon structures were calculated. The measured and normalized length-force relationships were clearly different between muscle fiber and MTC, especially on the length axis. The differences could be attributed to the existence of compliant tendon structures and increment of pennation angles related to elongation of tendon structures, suggesting that compliant tendon structures in human muscles influence the length-dependent force generation in both muscle fiber and MTC.

収録刊行物

• Ｉｎｔ．　Ｊ．　Ｓｐｏｒｔ　Ｈｅａｌｔｈ　Ｓｃｉ．

  Ｉｎｔ．　Ｊ．　Ｓｐｏｒｔ　Ｈｅａｌｔｈ　Ｓｃｉ． 3 (Special_Issue_2005), 245-252, 2005

  一般社団法人 日本体育・スポーツ・健康学会

キーワード

• tendon structures
• elongation
• pennation angle
• ascending limb
• electrical stimulation

詳細情報

• CRID: 1390282680263559168
• NII論文ID: 130000069684
• DOI: 10.5432/ijshs.3.245
• ISSN: 18804012
• ISSN: 13481509
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可