poriomania (pÅrâ³ Ä-Å-mÄnâ² Ä-Ä) [Gr. poreia, walking, + mania, madness]
1 Refers to the bowler's motion that ends with the start of the delivery. 2  arm-swing: The arc of the bowling arm and hand from the swing to the backswing. 3  arrows: Targeting arrows that appear on the lane 12 to 16 feet beyond the foul line. 4  Also called darts.
The bat with the lighter swing weight will be easier to control and easier to generate a quick whip action to achieve greater bat speed just prior to the collision with the ball. Or, if the bat is end-loaded the larger rotational inertia of the bat will make it more difficult for a player to check his/her swing.