Fig. 3

compensatory movement of the trunk (mm) during task performance with and without support. Trunk movement is defined as the absolute distance covered (mm) by the marker on the jugular notch during the following activities. Drink right: bring hand holding a cup with 200 g to the mouth with the right arm; Drink left: bring hand holding a cup with 200 g to the mouth with the left arm; Weight right: move a 100 g weight across the table from the shoulder line to the center of the body with the right arm; Weight left: move a 100 g weight across the table from the shoulder line to the center of the body with the left arm; Computer: use both hands on the keyboard of the computer to write a word