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.
The pitching distances shown below can be used to help determine an ideal pitching distance for batting practice along with the appropriate batting cage size. Pitching distances shown below are measured from the front of the pitchers plate to the rear of the home plate.