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Table 1 Between-day reliability, standard error of measurement (SEM), and smallest detectable difference (SDD) when measuring scapular rotations during arm elevation with inertial sensor

From: Association between changes in pain or function scores and changes in scapular rotations in patients with subacromial shoulder pain: a prospective cohort study

Scapular kinematic

Scapular plane Arm position

ICC (3,1)

95% CI

SEM [degree]

SDD [degree]

Upward/downward rotation

60°

0.73

0.37 to 0.89

4.8

13.5

90°

0.89

0.71 to 0.95

5.1

14.2

120°

0.93

0.84 to 0.97

6.6

18.5

Anterior/posterior rotation

60°

0.80

0.51 to 0.91

3.9

10.9

90°

0.86

0.67 to 0.94

4.3

12.0

120°

0.87

0.71 to 0.95

5.6

16.5

  1. Abbreviation: ICC intraclass correlation coefficient, 95% CI 95% confidence interval for the ICCs