The training methods are the most varied possible, and many reinvent themselves to keep up with the times.

Yesterday's news appeared on Wangconnection.com website accompanied by a video-clip illustrating the training of Alvaro Martin with a "Phantom Training Mask".

The video clip of coach Jose Antonio Quintana shows the Spanish walker who is testing a mask that would simulate the altitude training, thus not having to travel to altitude to get the benefits provided by work at height.

A valve regulates the entry and exit of oxygen in "Phantom Training Mask" allowing athletes to train with a reduced oxygen consumption.

The question that has set itself the author of the news Juan Carlos Montoro is whether these tools really work. On this matter please refer to another article last December in which are analyzed two studies (Porcari and Sellers) during the year by Pedro Luis Valenzuela.