TY - JOUR
T1 - In vivo behavior of muscle fascicles and tendinous tissues of human gastrocnemius and soleus muscles during twitch contraction
AU - Oda, Toshiaki
AU - Kanehisa, Hiroaki
AU - Chino, Kentaro
AU - Kurihara, Toshiyuki
AU - Nagayoshi, Toshihiko
AU - Fukunaga, Tetsuo
AU - Kawakami, Yasuo
PY - 2007/10/1
Y1 - 2007/10/1
N2 - 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.
AB - 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.
KW - Elongation of tendinous tissues
KW - Force transmission
KW - Shortening velocity of muscle fascicles
KW - Twitch time-course characteristics
KW - Ultrasonic images
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U2 - 10.1016/j.jelekin.2006.04.013
DO - 10.1016/j.jelekin.2006.04.013
M3 - Article
C2 - 16904343
AN - SCOPUS:34547547284
SN - 1050-6411
VL - 17
SP - 587
EP - 595
JO - Journal of Electromyography and Kinesiology
JF - Journal of Electromyography and Kinesiology
IS - 5
ER -