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.
In college softball how far is the pitchers mound to home plate? College softball distance is 43 feet. Recently the national high school governing organization voted to move high school pitchers back from 40 to 43 feet beginning in the 2010â¦-2011 season. High schools are free to move to 43 feet in the 2009-2010 season if they choose.