Scapular dyskinesis among competitive swimmers.

Area of Science:

• Sports Medicine
• Biomechanics
• Orthopedics

Background:

• Scapular dyskinesis (SD) is a common issue affecting overhead athletes.
• Competitive swimmers are at risk for shoulder injuries due to repetitive motions.

Purpose of the Study:

• To determine the prevalence of scapular dyskinesis (SD) in competitive swimmers during a typical training session.

Main Methods:

• An observational study filmed 20 young competitive swimmers during training.
• Scapular dyskinesis was assessed at baseline, midpoint, and end of the session.
• Demographic and Quick Disabilities of the Arm, Shoulder, and Hand (DASH) data were collected.

Main Results:

• SD prevalence increased from 30% at baseline to 70% mid-session and 80% post-session.
• The increase from baseline to mid-session approached significance (p=0.055).
• The increase from mid-session to end-session was statistically significant (p=0.004).

Conclusions:

• Scapular dyskinesis prevalence rises significantly throughout a swimming training session.
• Muscle fatigue is the likely cause of increased SD.
• Clinical assessment of shoulder issues in swimmers should include post-training evaluation for SD.