Effects of Ai Chi on Scapular Muscle Activation in Overhead Athletes With Scapular Dyskinesis

Exclusion Criteria

• •the individuals who have shoulder/neck pain in recent 3 months (VAS \>7/10)
• •severe shoulder trauma (the collision shoulder, shoulder sprains or strains)
• •severe scoliosis (Cobb angle \> 25 degrees)
• •surgery of upper extremity (the shoulder, cervical spine and elbow) or cervical spine
• •peripheral nerve injury or neurological disease (impaired sensation or motor function: numbness, tingle, muscle weakness)
• •body mass index (BMI) \>25
• •infectious disease (upper respiratory tract infection, skin infection, etc.)