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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)
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