Interexaminer Reliability Of The Deltoid And Psoas Muscle Test

Henry Pollard, DC, PhD, a Bronwyn Lakay, MChiro,b Frances Tucker, MChiro,b Brett Watson, MChiro, b and Peter Bablis, DCb
J Manipulative Physiol Ther. 2005 Jan;28(1):52-6


To determine if 2 practitioners of differing skill levels could reliably agree on the presence of a weak or strong deltoid or psoas muscle.

Study Design: 
Interexaminer reliability study of 2 common muscle tests.
Main Outcome Measures: Cohen j (unweighted) scores, observer agreement, and 95% confidence intervals (CIs).

The results showed that an experienced and a novice practitioner have good agreement when using repeated muscle test procedures on the deltoid (j 0.62) and the psoas (j 0.67).

The manual muscle test procedures using the anterior deltoid or psoas showed good interexaminer reliability when used by an experienced and a novice user. These techniques may be used between practitioners in multidoctor assessment/management programs. (J Manipulative Physiol Ther 2005;28:52-56)

Key Indexing Terms: Chiropractic; Muscle Test; Reliability; Psoas Muscle; Deltoid Muscle

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