Parkour (abbreviated PK) is a training discipline that developed out of military obstacle course training. Practitioners aim to move quickly and efficiently from one place to another, negotiating the obstacles in between. Popularised in France by David Belle and others in the 1990s and 2000s, parkour uses no equipment and is non-competitive. A male practitioner is generally called a 'traceur', a female a 'traceuse'. 'Le parcours' was the original word passed down to David Belle from his father Raymond Belle. This was the term Raymond used when speaking to David about the training he had done. The term derives from 'parcours du combattant', the classic obstacle course method of military training proposed by Georges Hbert, but the term 'le parcours' was used by Raymond to encompass all of his training including climbing, jumping, running, balancing, and the other methods he undertook in his personal athletic advancement.