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Experimental setup depicting positions of reflective markers for the gold standard optical motion capture system and inertial measurement unit (IMU). (A) shows IMU attached to the forearm with a black self-adhesive strap. Participant is shown in (A) neutral position and performing (B) flexion up to 90°, (C) extension, (D) external rotation, (E) abduction up to 90°. The images are published with the participant’s consent.
