Patterns are learned and those patterns are peculiar to every movement. Indeed, they are so repetitive as to warrant designating them patterned movements. . . Partial patterns emerge secondarily, by virtue of special training, . . It is highly unlikely that partial or isolated training of movement segments will replicate the unit function in the total action. There will be no integration of the partial practice movement into the total response movement.
Central excitations have a tendency to flow always into stretched muscles.
Thus, every change in body positioning alters the configuration of the next succeeding efferent response. It affects not only the muscle stretched, but all functionally related muscle groups as well. This means that a change in the responsiveness of one component of a movement-complex spreads autonomously to the other constituents. When a patterned movement is changed by the conscious effort to alter one aspect of the movement, the whole action is altered, most likely to perform worse. The isolated practices of drill elements and then consciously implementing the experiences from the drills into the pattern, usually will disrupt the pattern in its entirety.