Details

Autor(en) / Beteiligte

• IKUTA, Hiroki
• IJIRI, Tomohito
• SUZUKI, Toshiaki

Titel

Muscle Activities of the Quadriceps during Knee Extension Isometric Contraction at Different Angles of Knee Joint Flexion

Ist Teil von

• Rigakuryoho Kagaku, 2016, Vol.31(1), pp.7-11

Ort / Verlag

The Society of Physical Therapy Science

Erscheinungsjahr

2016

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• [Purpose] The changes in muscle activities of the quadriceps during knee extension isometric contraction associated with changes in knee joint flexion angle were investigated. [Subjects] The subjects were 10 healthy individuals who provided their informed consent. [Methods] The subjects performed isometric contraction of 40% maximum voluntary contraction at four different angles of knee flexion. The EMGs of the vastus medialis obliquus, vastus medialis longus, rectus femoris, and vastus lateralis were measured. [Results] The relative integrated EMG values of the vastus medialis obliquus and vastus lateralis at 90° knee flexion were significantly greater than their respective values at 20° knee flexion. [Conclusion] To train the vastus medialis obliquus, knee extension with the knee joint at 90° flexion is appropriate.