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. 2022 Dec;25(4):321-327.
doi: 10.5397/cise.2022.01109. Epub 2022 Nov 17.

Reliability of the scapular dyskinesis test yes-no classification in asymptomatic individuals between students and expert physical therapists

Lawrence S Ramiscal  1 , Lori A Bolgla  1 , Chad E Cook  2 , John S Magel  3 , Stephen A Parada  4 , Raymond Chong  5
Affiliations

Reliability of the scapular dyskinesis test yes-no classification in asymptomatic individuals between students and expert physical therapists

Lawrence S Ramiscal et al. Clin Shoulder Elb. 2022 Dec.

Abstract

Background: Scapular dyskinesis is considered a risk factor for the shoulder pain that may warrant screening for prevention. Clinicians of all experience screen scapular dyskinesis using the scapular dyskinesis test yes-no classification (Y-N), yet its reliability in asymptomatic individuals is unknown. We aimed to establish Y-N's intra- and inter-reliability between students and expert physical therapists.

Methods: We utilized a cross-sectional design using consecutive asymptomatic subjects. Six students and two experts rated 100 subjects using the Y-N. Cohen's kappa (κ) and Krippendorff's alpha (K-α) were calculated to determine intra- and inter-rater reliability.

Results: Intra- and inter-rater values for experts were κ=0.92 (95% confidence interval [CI], 0.91-0.93) and 0.85 (95% CI, 0.84-0.87) respectively; students were κ=0.77 (95% CI, 0.75-0.78) and K-α=0.63 (95% CI, 0.58-0.67).

Conclusions: The Y-N is reliable in detecting scapular dyskinesis in asymptomatic individuals regardless of experience.

Keywords: Musculoskeletal system; Physical therapy specialty; Shoulder; Students; Dyskinesias.

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Conflict of interest statement

Conflict of interest

None.

Figures

Fig. 1.
Fig. 1.
Scapular dyskinesis test yes-no classification and video recording set-up.
Fig. 2.
Fig. 2.
Student rater training. SYM: symmetrical, ASYM: asymmetrical, K-α: Krippendorff’s alpha.
See this image and copyright information in PMC

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