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 loft of the pitching wedge is typically between 45 and 48 degrees and it is mainly used for shots outside of 100 yards â the average club golfer hits a pitching wedge around 105 yards, while the Tour professional carries it around 125 yards.