There is no doubt that the
cognitive component of agility is very important ( Gabbett
et al., 2008; Sheppard et al., 2006). However, the mechanics
associated with agility are also essential for skill execution.
Change-of-direction speed helps describe these
mechanics, in that it incorporates the ability to accelerate
and decelerate rapidly, in addition to changing direction
(Young and Farrow, 2006). In view of the importance of
both linear speed and change-of-direction speed for field
sport athletes, it is imperative that the assessment protocols
adopted by field sport coaches and strength and conditioning
professionals are found to be valid and reliable.