You collect data during a reaching task from three markers on a person’s arm: the acromion process, lateral epicondyle of the humerus, and ulnar process. Their coordinates (x,y; cm) at the end of the reach are:
Acromion process = (1 cm, 25 cm)Lateral epicondyle = (28 cm, 10 cm)Ulnar process = (50 cm, 5 cm)
Draw a plot of this scenario to visualize the reach with three points, one representing each marker’s coordinates. Be sure to include correct units and label tick marks on axes (5 points).
What is the elbow joint angle at this point in time? You can express it as degrees of extension or of flexion (15 points).
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