Axel, Lutz and Salchow are all terms used in which sport?
Axel jump 3½ rotations, or a quadruple Axel with 4½ rotations, but no skater has yet accomplished a quadruple Axel in competition. The Axel jump is considered the most technically difficult jump among six types of jumps in single figure skating. According to ISU judging system, a triple Axel jump has a base value of 8.0 points, while a double Axel has that of 3.3 points. This makes a triple Axel the highest base-valued triple jump, above other triple jumps such as the triple Lutz (5.9 points), triple flip (5.3 points), triple loop (4.9 points), triple Salchow (4.3 points), and triple toe
Salchow jump over the ice. For example, Sonia Bianchetti, former chair of the ISU Technical Committee, has referred to the two-footed Salchow entry as "a severe error for which a steep deduction had to be applied by the judges". The two-footed Salchow entry is also confusing to spectators because the resulting jump can more strongly resemble a loop jump or toe loop jump than a traditional Salchow. A variant of the Salchow that is rarely performed today is the "one-foot Salchow", which lands on the same back inside edge used for the jump takeoff, much like a half loop or one-foot Axel.