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Evidence for intermuscle difference in postactivation potentiation in the human triceps surae: A mechanomyographic study
Author(s) -
Miyamoto Naokazu,
Fukunaga Tetsuo,
Kawakami Yasuo
Publication year - 2009
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.21320
Subject(s) - long term potentiation , tibial nerve , soleus muscle , triceps surae muscle , anatomy , medicine , neuroscience , chemistry , psychology , skeletal muscle , stimulation , receptor
This study compared the postactivation potentiation of the medial gastrocnemius (MG) and soleus muscles by using mechanomyography (MMG). Twitch responses were evoked by stimulating the posterior tibial nerve with supramaximal intensity before and after a 10‐s maximal voluntary plantar flexion, and potentiation of each muscle was evaluated by peak‐to‐peak amplitude of the MMG signal. The MG showed greater potentiation than the soleus, reflecting the reported fiber type composition of these muscles. This result points to the possibility that one can delineate contrasting responses of synergist muscles to postactivation potentiation by this method. Muscle Nerve 39: 703–706, 2009