Double Dutch is a game in which two long jump ropes turning in opposite directions are jumped by one or more players jumping simultaneously. It is believed to have originated among Dutch immigrants in New York City, although it has been a popular school playground game for much longer than that in the Netherlands, and is now popular worldwide. While it had long been a popular street activity for African American girls in New York City, the modern sport of Double Dutch originated in the early 1970s with NYPD officers Ulysses Williams and David Walker, who formalized the rules for competition. The first official competition was held in 1974. Competitions in Double Dutch range from block parties to the world level. During the spring of 2009, Double Dutch became a varsity sport in New York City public high schools.
Playing Double Dutch involves at least three people: one or more jumping, and two turning the 3.5 m-long (11.5 ft) ropes (according to the American standard). A jumper usually performs tricks that may involve gymnastics or breakdance, also called breaking or b-boying/b-girling, and may also incorporate fancy foot movements. Based on the “WJRF Judging Handbook” 2019 edition, some of the key elements of Double Dutch include multiples, power, gymnastics, turner involvement, releases, switches and footwork.
https://www.youtube.com/watch?v=Kh1rgPIkWKA