Abstract：
:The purpose of the present study was to investigate the electromyography (EMG) to torque relationship of the vastus intermedius (VI) muscle. Thirteen healthy men performed maximal voluntary contraction (MVC) and submaximal contraction during isometric knee extension at 10% of the MVC to 90% of the MVC at intervals of 10% of the MVC level. Surface EMG was detected from four muscle components of the QF muscle group, i.e., VI, vastus lateralis (VL), vastus medialis, and rectus femoris (RF) muscles. Normalized muscle activation in the VI muscle was significantly lower than in the VL muscle at a lower torque level (20 and 40% of MVC) and significantly lower compared to the RF muscle at a higher torque level (from 60 to 90% of MVC). These results suggest that neuromuscular activation in the VI muscle is not consistent with the other components of QF muscle group during submaximal knee extension contractions.
journal_name
Eur J Appl Physioljournal_title
European journal of applied physiologyauthors
Watanabe K,Akima Hdoi
10.1007/s00421-009-1064-zsubject
Has Abstractpub_date
2009-07-01 00:00:00pages
665-73issue
5eissn
1439-6319issn
1439-6327journal_volume
106pub_type
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