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. Author manuscript; available in PMC: 2013 Apr 30.
Published in final edited form as: J Biomech. 2012 Mar 3;45(7):1161–1168. doi: 10.1016/j.jbiomech.2012.02.003

Table 3.

Significant difference in error values across angles or internally versus externally rotating the arm.

Motion Rotation Significant Effect P value Interpretation Magnitude of difference
Axial rotation by side of body Axial Rotation Interaction of humerothoracic elevation angle and phase 0.001 - All angles different from each other 4° to 21°
- Internal rotation different from external rotation at all angles except at 30° external rotation 3.5°
Axial Rotation Interaction of humerothoracic elevation angle and phase < 0.001 - All angles different from each other except 10° of external rotation with 10° of internal rotation 4.7° to 18.3°
- Internal rotation different from external rotation at 30° and 50° 2.1°