In a scientific study that has just been published, researchers have managed for the first time to continuously measure blood oxygenation in exercising swimmers, using a forehead sensor placed under the swimming cap (january 2014, click here).
Thanks to this technique, they have showed that it is possible for swimmers to train in real hypoxic conditions, if they use a specific hypoventilation technique.
The method consists of short breath holdings with the lungs half full of air. One can obtain oxygen concentrations similar to altitudes above 2000m, while remaining at seal level!
After several weeks of training, the physiological adaptations allow to delay fatigue during intense exertions
Hypoventilation training can be used in other sporting disciplines such as athletics, cycling, team sports and combat sports.
A book has just been written on this topic; "hypoventilation training, push your limits!" (author: Xavier Woorons)
If you want to get more information, you can visit this website:
www.hypoventilation-training.com/