ABSTRACT
Counting Motions A motion is a movement orexertion made by a major joint orbody link. From theperspective of preventing Musculoskeletal Disorders (MSDs), the concem is for the nomber of loads on, or slides of, a tendon and is thus the primary criterion for quantifying the morlons of a task. A good rule of thumb is that a motion occurs every time the body part in question changes directions. Thus, theextremely common flexion/extension cycle involvestwo motions.
