In 1977, delegates form Germany, Italy and Sweden founded the European Ju-Jitsu Federation (EJJF).

[1] In the early 1990s the IJJF became a provisional member of the General Association of International Sport Federations (GAISF), member of International World Games Association (IWGA – part of the Olympic Movement together with the IOC) and affiliated to the Sport for All Federation (FISpT).

The JJIF is a member of GAISF and IWGA, and both organizations are in close cooperation with the International Olympic Committee (IOC).

The Duo system has three competition categories: male, female or mixed, and the athletes are judged for their speed, accuracy, control and realism.

It is arguably the most spectacular form of Ju-jitsu competition and it requires great technical preparation, synchronicity and elevated athletic qualities.

Here points are given for immobilisation techniques, controlled strangulations or levers on body joints that bring the opponent to yield.