Table 2.

Reliability of Infraspinatus RUSI measures

	Mean +/‐ SD	Inter‐rater ICC (95% CI)	Intra‐rater ICC (95% CI)	SEM	MDC
Symptomatic Shoulder
Relaxed Thickness	16.4 +/‐ 4.1 mm	.89 (.82‐.94)	.96 (.94‐.98)	0.8mm	2.4mm
Contracted Thickness	19.0 +/‐ 4.3 mm	.92 (.87‐.96)	.98 (.96‐.99)	0.7mm	1.9mm
% Thickness Change	17.1% +/‐ 10.6%	.43 (.19‐.62)	.79 (.67‐.87)	5.7%	15.8%
Asymptomatic Shoulder
Relaxed Thickness	16.0 +/‐ 3.6 mm	.87 (.78‐.92)	.98 (.96‐.98)	0.6mm	1.6mm
Contracted Thickness	19.1 +/‐ 4.0 mm	.90 (.83‐.94)	.97 (.96‐.98)	0.7mm	1.8mm
% Thickness Change	19.9% +/‐ 10.3%	.61 (.41‐.75)	.54 (.38‐.68)	5.8%	16.1%