In addition to their classification of agility for
running sports, Young et al. (2002) included the
term ‘‘change of direction speed’’ not only as a
component of agility, but also to describe movement
wherein no reaction to a stimulus is required. In
other words, some conditioning exercises could be
classified as change of direction speed exercises
(sprints with changes of direction), while others
could be classified as agility (sprints with directional
changes in response to a stimulus).