The goal on the defensive end of the floor is to force the opposition into taking the most difficult shot possible.  The player is assigned to either defend and follow the movements of a single offensive player (man-to-man) or guard a specific area of the floor and whatever offensive player enters that area (zone defense).  The defender is positioned between the ball and the basket and may be angled in one direction or another, depending on the defensive scheme. Defense is usually performed with side steps and requires the defender facing the offensive player while shuffling in different directions.  Defense requires an exceptionally good physical condition to follow the opponent and overturn the offense. The test records the athlete’s lateral movement speed towards the ball.