Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Qi Zhang,Influence of Knee Joint Position on Co-contractions of Agonist and Antagonist Muscles during Maximal Voluntary Isometric Contractions: Electromyography and Cybex Measurement,Journal of Physical Therapy Science,0915-5287,The Society of Physical Therapy Science,2007,19,2,125-130,https://cir.nii.ac.jp/crid/1390282679305403136,https://doi.org/10.1589/jpts.19.125