Distance diving
When apnea is about underwater on one breath ( apnea diving to cover) the widest possible range. Distance diving is important in lifeguarding and is a sporting discipline in apnea diving.
Lifeguard
Distance diving is part of various examinations by the water rescue service and the German Life Rescue Society (DLRG) and is a prerequisite for obtaining a swimming badge in many countries, e.g. B. in Germany and Austria.
Distance diving as a sporting discipline
In apnea diving as a competitive discipline, a distinction is made between distance diving with fins ( Dynamic With Fins (DYN) ) and distance diving without fins ( Dynamic Without Fins (DNF) ), with the competitions being held in swimming pools . The current world records of the international association of freedivers ( AIDA ): see Apnea diving # Official world records (according to AIDA) .
At the Olympic Summer Games in 1904 there was a one-time competition in the head long jump ; after a pike jump underwater, the participants had to cover the greatest possible distance without swimming strokes. The American William Dickey won with 19.05 m in front of four compatriots.
Dangers and Risks
If you are in a normal physical condition, distance diving is harmless as long as you do not do it alone. According to the guidelines of all diving and swimming sports associations, an experienced person should be available to secure the swimmer or diver in the event of an accident. Problems can arise with the previous, conscious hyperventilation : Although the respiratory stimulus is delayed by hyperventilation, the oxygen content in the blood continues to decrease normally. If there is no breathing stimulus, a so-called swimming pool blackout can occur.
Web links and literature
- Examination regulations of the DLRG Swimming / Lifeguarding (PDF; 590 kB)
- Frieder Schilling: World record holder Sietas manages 213 meters with one breath . In: Spiegel Online of July 2, 2008 (last accessed on January 22, 2010).