In vivo behavior of muscle fascicles and tendinous tissues of human gastrocnemius and soleus muscles during twitch contraction

Toshiaki Oda, Hiroaki Kanehisa, Kentaro Chino, Toshiyuki Kurihara, Toshihiko Nagayoshi, Tetsuo Fukunaga, Yasuo Kawakami

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

The present study investigated the differences between the human medial gastrocnemius (MG) and soleus (SOL) muscles in length changes of muscle fascicles and tendinous tissues during twitch contraction induced by an electrical nerve stimulus. Also, the time-course characteristics of twitch torque were related with changes in the length of muscle fascicles and tendinous tissues. No significant difference was observed between MG and SOL in contraction and half relaxation times of the changes in lengths and velocities of both muscle fascicles and tendinous tissues. The time-course of changes in twitch torque was nearly identical to that of the length of muscle fascicles and tendinous tissues. It was suggested that the behavior of MG and SOL during twitch contraction is practically similar in spite of their known physiological and architectural differences, and that the time-course of twitch torque is greatly influenced by the changes in the length of muscle fascicles and tendinous tissues.

Original languageEnglish
Pages (from-to)587-595
Number of pages9
JournalJournal of Electromyography and Kinesiology
Volume17
Issue number5
DOIs
Publication statusPublished - 2007 Oct 1

Keywords

  • Elongation of tendinous tissues
  • Force transmission
  • Shortening velocity of muscle fascicles
  • Twitch time-course characteristics
  • Ultrasonic images

ASJC Scopus subject areas

  • Neuroscience (miscellaneous)
  • Biophysics
  • Clinical Neurology

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