The intertester reliability of the Scapular Assistance Test

J Orthop Sports Phys Ther. 2006 Sep;36(9):653-60. doi: 10.2519/jospt.2006.2234.


Study design: Test-retest reliability study.

Objective: To determine interrater reliability of the modified scapular assistance test (SAT). The modified SAT is designed to assess the contribution of scapular motion to shoulder pain.

Background: Abnormal scapular motion has been implicated in different shoulder disorders. However, there is a lack of clinical evaluation tools to assess the scapular component of shoulder dysfunction.

Methods and measures: Forty-six subjects who were referred to physical therapy for treatment of various shoulder pathologies were recruited for this study. The modified SAT was performed on each participant by 2 different examiners. Percent agreement and kappa coefficient were utilized to determine interrater reliability of the modified SAT.

Results: The kappa coefficient and percent agreement were .53 and 77%, respectively, when the test was performed in the scapular plane, and .62 and 91%, respectively, when the test was performed in the sagittal plane.

Conclusions: The modified SAT possesses acceptable interrater reliability for clinical use.

MeSH terms

  • Adult
  • Bursitis / physiopathology
  • Female
  • Humans
  • Joint Instability / physiopathology
  • Male
  • Observer Variation
  • Reproducibility of Results
  • Rotation
  • Rotator Cuff / physiopathology
  • Rotator Cuff Injuries
  • Scapula / physiopathology*
  • Shoulder Impingement Syndrome / physiopathology
  • Shoulder Pain / physiopathology*
  • Tendinopathy / physiopathology