Choi J, Cynn H, Baik S, Kim S.  Effect of Isometric Horizontal Abduction on Scapular and Shoulder Muscle Activity During Knee Push-up Plus With Different Shoulder Angles in Individuals With Scapular Winging.  Physical Therapy Korea 2023;30:160-168.  https://doi.org/10.12674/ptk.2023.30.2.160