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Table 3 E and E r (mm) for each subject and each experimental factor for the \({\text{NAP}}_{\upomega}^{\left( 1 \right)}\) algorithm

From: In vivo estimation of the shoulder joint center of rotation using magneto-inertial sensors: MRI-based accuracy and repeatability assessment

Factor Subject 1 Subject 2 Subject 3 Subject 4 Subject 5 Mean
E E r E E r E E r E E r E E r E E r
Slow 14.8 ± 5 9.8 ± 7 34.6 ± 6 13.8 ± 7 11.5 ± 5 6.3 ± 2 21.2 ± 2 4.7 ± 2 15.5 ± 6 11.2 ± 7 19.5 ± 10 9.1 ± 6
Fast 16.9 ± 9 7.4 ± 5 40.4 ± 11 11.5 ± 10 11.4 ± 4 9.6 ± 4 21.1 ± 3 3.6 ± 2 19.1 ± 4 9.2 ± 5 21.8 ± 12 8.3 ± 6
Cross 17.6 ± 6 7.9 ± 7 37.6 ± 11 12.7 ± 9 11.4 ± 5 7.9 ± 3 22.6 ± 3 4.5 ± 2 17.6 ± 6 8.2 ± 7 21.4 ± 11 8.2 ± 6
Star 14.1 ± 8 9.3 ± 5 37.4 ± 8 12.6 ± 9 11.4 ± 4 8.0 ± 4 19.7 ± 2 3.8 ± 2 16.9 ± 4 12.2 ± 5 19.9 ± 11 9.2 ± 6
Ɵ 1 18.6 ± 8 7.2 ± 5 36.5 ± 7 16.5 ± 9 9.6 ± 5 8.1 ± 4 20.0 ± 2 3.8 ± 2 16.1 ± 6 8.6 ± 5 20.2 ± 11 8.8 ± 7
Ɵ 2 13.2 ± 6 9.9 ± 7 38.5 ± 11 8.8 ± 6* 13.2 ± 4 7.8 ± 3 22.3 ± 3 4.5 ± 2 18.5 ± 3 11.8 ± 7 21.1 ± 11 8.6 ± 6
  1. Mean ± STD
  2. * A statistically significant difference between the relevant parameters (p < 0.05, Student’s t test)