Effects of Tendinous Tissue on the Torque−Angle Relationship of the Knee Joint
収縮時の筋束動態からみた関節角度-トルク関係

Wataru TAKISHITA, Mutsumi TAKENAKA, Daichi NAGAOKA, Kazuyuki OGISO
2015 Rigakuryoho Kagaku  
Purpose] This study was designed to clarify the effects of the in vivo fascicle behavior of the vastus lateralis muscle (VL) on the knee joint torque (KJT)-angle (KJA) relationship, and to examine the indirect contributions of tendinous tissues to it. [Subjects and Methods] Fifteen males performed voluntary (VOL) and electrically (ELE) stimulated isometric knee extensions, at KJAs of 30, 60 and 90˚. For the ELE condition, electrical stimulation (ES) of 20 Hz was applied to the VL at 10
more » ... intensity levels. [Results] In VOL, positive relationships were observed between EMG and KJT. Movement of the fascicle increased with KJA. In ELE, KJT was constant at 30º and gradually increased at larger KJA with ES intensity. As KJA decreased, fascicle movement in the proximal direction increased. [Conclusion] The results suggest that the KJT-KJA relationship is influenced by the behavior of tendinous tissue due to there being more slack in the tissue in extended positions.
doi:10.1589/rika.30.803 fatcat:boq6zd5unrhexaisbn4y73s6xy