Muscles Used in the Backstroke. Even though you're swimming on your back, you use your abdominals in addition to the muscles of your back -- the latissimus dorsi and spinus erectors -- to support you as you flow through the water during the backstroke.
The average distance for a pitching wedge is 130 to 135 yards; for a sand wedge 115 to 120 yards; and for lob wedges 75 to 95 yards.
Pitching Distance. When selecting a batting cage the ideal length of the batting cage will equal or exceed the distance measured from the pitchers mound to home plate. The best results for practice hitting can be obtained by using the same pitching distance in practice as used in the game.