Figure 1

Experimental setup. Illustration of the experimental setup used in the elbow flexion task (a) and placement of accelerometers and weights (b). Accelerometers 1 and 2 were used to record accelerations in the elbow flexion task and the shoulder abduction task, respectively. Weight A, used in the elbow flexion task, and weight B, used in the shoulder abduction task, was attached 20 cm and 8 cm from the elbow joint rotation centre, respectively.