Taekwondo as a martial art is popular with people of both genders and of many ages. Physically, taekwondo develops strength, speed, balance, flexibility, and stamina. An example of the union of mental and physical discipline is the breaking of wooden boards, bricks or tiles, which requires both physical mastery of the technique and the concentration to focus one's power.
Two of the most popular systems of taekwondo are named solely after their respective organizations: the World Taekwondo Federation (WTF) and theInternational Taekwon-Do Federation (ITF).
The WTF was founded in 1973, with roots in the KTA. The KTA Central Dojang had been opened in South Korea in 1972, and a few months later, the name was changed to the Kukkiwon. The following year, the WTF was formed. TheInternational Olympic Committee recognized the WTF and taekwondo sparring in 1980.
Although the terms "WTF" and "Kukkiwon" are often mistakenly used interchangeably, the Kukkiwon is a completely different organization which trains and certifies instructors and issues official dan and poom certificates worldwide. The Kukkiwon has its own unique physical building that contains the administrative offices of Kukkiwon (World Taekwondo Headquarters) in Seoul, South Korea and is the system of taekwondo. The WTF is a tournament committee and is not technically a style or a system.