A variant is to move both arms synchronized and not alternating, similar to an upside down breast stroke. This is easier to coordinate, and the peak speed during the combined power phase is faster, yet the speed is much slower during the combined recovery. The average speed will usually be less than the average speed of the alternating stroke. This stroke is commonly called the elementary backstroke. This elementary backstroke swim was used in the 1900 and 1908 Olympics. The backcrawl swim supplanted the elementary backstroke swim after 1908 as the competitive back swim and it is now the referred to as the backstroke.