Alterations of scapular kinematics and associated muscle activation specific to symptomatic dyskinesis type after conscious control

•Symptomatic subjects can actively maintain the scapula by conscious control.•Conscious control of the scapula can be used to improve scapular external rotation during 3 selected exercises.•Conscious control of the scapula can be used to improve MT, LT, and SA performance.•Conscious control during side-lying external rotation can increase SA activity in patients with scapular dyskinesis.