Systems of altitude simulation have allowed the protocols that do not undergo of the tension between the improvement of the physiology of altitude and more intense training. These systems of simulated altitude more to the competition can be used if it is necessary.
For example, in Finland, a called scientist Heikki Rusko has designed a “house of high altitude.” The air within the house, that is located in the level of the sea, is to the pressure normal, but modified to have a low oxygen concentration, near 15.3% (20.9% below the level of the sea), that is approximately equivalent to the amount of oxygen available in high altitude of frequent use for the training in altitude due to the reduction of the partial oxygen pressure in the height. The sportsmen live and sleep within the house, but that make their studies outside (in the normal oxygen concentrations in 20.9%). Rusko results shows to improvements of the EPO and the red globule levels. Its technology has been commercialized and is being used by thousands of athletes of competition in the cycling, triathlon, Olympic sports of resistance, professional soccer, basketball, hockey, soccer, and many other sports that can be taken advantage of the improvements in force, speed, resistance, and the recovery.