Static apnea
Static apnea is a discipline in which a person holds their breath underwater for as long as possible, and need not swim any distance. Static apnea is defined by the International Association for Development of Apnea and is distinguished from the Guinness World Record for breath holding underwater, which allows the use of oxygen in preparation. It requires that the respiratory tract be immersed, with the body either in the water or at the surface, and may be performed in a pool or open water. Static apnea is the only AIDA International discipline measuring duration, and one of the three disciplines considered for the international competitions by team, with constant weight and dynamic with fins.
Beta blockers can prolong static apnea for up to 20%.
All-time list
Men
* Branko Petrović also has 11:54 under World Guiness. He never reduplicated this performance under the level of anti-doping scrutiny required by official freediving federations such as CMAS and AIDA.''** Goran Čolak also has 11:06.14 and 10:19 under special rules at 12th and 11th Fazza freediving competition respectively, in Dubai, UAE.''