Fig. 3. Comparison of trunk muscle activation during two knee joint flexion positions in bird dog exercise. (A) Raised lower limb. (B) Contralateral side. BDE, bird dog exercise with knee joint 0º flexion position; BDKFE, bird dog exercise with knee joint 90º flexion position; IO, internal abdominal oblique; EO, external abdominal oblique; MF, lumbar multifidus; ICLT, thoracic part of the iliocostalis lumborum; MVIC, maximal voluntary isometric contractions. *p < 0.05.
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