Figure 4From: The reliability of three-dimensional scapular attitudes in healthy people and people with shoulder impingement syndrome Intersession standard error of measurement of 3D scapular attitudes using two methods of calculation. The intersession standard error of measurement (SEM) of 3D scapular attitudes (anterior/posterior tilting (A-PT), lateral/medial rotation (L-MR) and protraction/retraction (PRO-RET)) were measured in three static shoulder positions (arm at rest, flexion, abduction) using two methods of calculation (with respect (w/r) to the trunk and with respect (w/r) to the scapula at rest) in healthy subjects (n = 30 shoulders). The intersession SEM were also measured using the mean of the three trials of each session (Trial 1-2-3) and the mean of the two first trials of each session (Trial 1–2). The error bar represents the 95% confidence interval of the SEM.Back to article page