Not all studies show a statistically significant increase in red blood cells from altitude training.

He had also come to the volcano for his weekly altitude training.

For the benefits of altitude training please visit the relevant entry.

Other mechanisms have been proposed to explain the utility of altitude training.

Moreover, the reservoir is used by rowers for altitude training.

Instead, he started a European-based lineup, featuring players who had less than a week of altitude training.

After that he went on altitude training in the Sierra Nevada.

A critical period of altitude training had begun.

Not everyone agrees about how effective altitude training really is, but many athletes and trainers are firm believers.

The following season, he began with high altitude training in Flagstaff, Arizona.

Altitude training works because of the difference in atmospheric pressure between sea level and high altitude.

Along with the inconvenience for a large number of runners who live at sea level, high altitude training isn't for everyone.

Altitude training has been used by endurance athletes for many years but there is growing evidence that the conventional wisdom should be challenged.

In the late March he flew to Mexico City for altitude training.

He was prescribed supplements for the condition and his high altitude training plans in Kenya were unaffected.

He had shown good early season form, but after a spell of altitude training he picked up a chest infection.

The World Cup has never taken place in Oslo (see altitude training).

He has said that Ferrari advised him on diet, altitude training and technical use of the racing bike.

The area is used for cross country skiing in the winter and during the summer months for altitude training with trails climbing out to 2000m.

Speed skaters also compete internationally and therefore spend several weeks away from their natural altitude training base in Park City.

But even he admits the Chinese do some things better, including systematic altitude training and the monitoring of nutrition, rest and recovery.

Though altitude training tactics are used primarily by elite athletes, some neighborhood gyms are trying them as well.

Still, he persevered through a winter of hard altitude training in Albuquerque and Mexico City.

"Altitude training is absolutely essential," Salazar said.

Another set of researchers claim that altitude training stimulates a more efficient use of oxygen by the muscles.