Table 2 .

Intra- and inter-class correlation coefficients

MWUs with SCI (n = 10)			Able-bodied subjects (n = 10)
Intraclass correlation coefficients
Position	Rater 1	Rater 2	Rater 1	Rater 2
Neutral	0.83 (0.33–0.96)	0.98 (0.93–0.99)	0.94 (0.74–0.98)	0.95 (0.78–0.99)
45A	0.94 (0.72–0.0.99)	0.93 (0.72–0.98)	0.24 (−3.06–0.82)	0.96 (0.83–0.99)
45P	0.92 (0.68–0.98)	0.97 (0.88–0.99)	0.69 (−0.08–0.92)	0.85 (0.38–0.96)
90A	0.90 (0.62–0.98)	0.97 (0.88–0.99)	0.88 (0.54–0.97)	0.81 (0.24–0.95)
90P	0.92 (0.69–0.98)	0.90 (0.62–0.98)	0.97 (0.87–0.99)	0.92 (0.68–0.98)
WR	0.93 (0.70–0.98)	0.93 (0.73–0.98)	0.85 (0.41–0.96)	0.96 (0.86–0.99)
Interclass correlation coefficients
Position	Time 1	Time 2	Time 1	Time 2
Neutral	0.78 (0.19–0.94)	0.92 (0.67–0.98)	0.85 (0.38–0.96)	0.95 (0.82–0.99)
45A	0.93 (0.72–0.98)	0.95 (0.83–0.99)	0.52 (−1.25–0.89)	0.88 (0.50–0.97)
45P	0.84 (0.34–0.96)	0.95 (0.80–0.99)	0.84 (0.30–0.96)	0.66 (−0.42–0.92)
90A	0.86 (0.41–0.97)	0.94 (0.76–0.99)	0.75 (−0.08–0.94)	0.84 (0.36–0.96)
90P	0.94 (0.79–0.99)	0.93 (0.70–0.98)	0.83 (0.26–0.96)	0.94 (0.73–0.98)
WR	0.89 (0.59–0.97)	0.97 (0.88–0.99)	0.75 (−0.08–0.94)	0.89 (0.52–0.97)
Intra-video reliability			Inter-video reliability
0.81 (0.71–0.87)			0.85 (0.78–0.90)

Data are given as average-measure values (lower-upper bound 95% confidence interval).

Time: Time order of recorded ultrasound video.

Neutral: neutral resting position; 45A, 45P: Arm fully extension with humeral internal rotation at 45° in scapular plane with and without resistance; 90A, 90P: Arm fully extension with humeral internal rotation at 90° in scapular plane with and without resistance; WR: Holding the weight relief raise position