is executed on the back outside edge, is entered into by the forward inside edge and 3 turn; the equivalent movement in ballet is the pirouette en dehors. There are three basic spin positions: the upright spin, the sit spin, and the camel spin. Upright spin The upright spin is one of the three basic figure skating spin positions. The ISU defines an upright spin as a spin with "any position with the skating leg extended or slightly bent which is not a camel position". It was invented by British figure skater Cecilia Colledge, who was the first to execute it. Variations of the upright spin include the layback spin, the Biellman spin (created by world champion Denise Biellmann), the full layback, the split, the back upright spin, the forward upright spin, the scratch spin (also called the blur spin), and the sideways leaning spin. Sit spin The sit spin, invented by American figure skater Jackson Haines, "represents one of the most important spins in skating". It is executed on one foot, in a sitting position, with the knee of the skating leg bent in a one-legged crouch position and the free leg held in front, to the side or to the back. It is difficult to learn, requires a great deal of energy, and is not as exciting to perform as other elements, such as jumps, but it has variations that make it more creative and pleasurable to watch. Skaters increase the difficulty of the sit spin in several ways. Camel spin Colledge was also responsible for the invention of the camel spin (also called the parallel spin); she was the first to perform it, in the mid-1930s. Writer Ellyn Kestnbaum speculates that the camel and layback spins, which "heightened the visual function of the skater creating interesting shapes with her body", were, for the first ten years after their inventions, performed mostly by women and not by men because it was easier for women to achieve the interesting shapes the camel spin creates than it is for men. American skater Dick Button, however, performed the first forward camel spin, a variation of the camel spin, and spins became a regular part of the repertoire of male skaters. The camel spin is executed on one foot and is an adaptation of the arabesque ballet pose to the ice. When executed well, the stretch of the body should create a