ABSTRACT
When we analyze any activity we find it to be complex. The movement is known to be composed of individual motor activities which can be looked at from at least three points of view. The activity can be dealt with in terms of contractions and relaxations of individual muscles or groups of muscles; or it may be analyzed into the elements of flexion, extension, and rotation; or we may deal with it in simpler terms of strength, and amount, and time, each of which is an element in accuracy. Since the combinations of muscles needed in special activities are detailed in many texts of anatomy, they will not be discussed here. We shall deal with movement from the standpoint which in clinical discussions is least frequently considered.
