Try a high altitude training Nike Blazer plvc

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Try a high altitude training
The heart-rate monitor shows my heart cantering at 100 beats a minute. But my body is absolutely still. A minute ago, it was a sedate 74 beats a minute. The glass chamber I am in is filled with ambient light; it appears no different from the air-conditioned room that envelopes the chamber. Catherine Zeta Jones isn t anywhere close by. Jason from Friday the 13th too is not to be seen. What could these dark and invisible forces be that fill the heart with trepidation and force it to palpitate so?
But now I m on the elliptical training machine. As my feet and hands move in a slow rhythm,[link widoczny dla zalogowanych], the heart-rate monitor has more alarming news: The amount of oxygen in my blood-stream has dropped from a normal of 94-97% to about 88-90%, and my heart is now racing at 130 beats a minute.
A little ahead is the danger zone,[link widoczny dla zalogowanych]. If the oxygen level continues to drop then delirium will set in. Each cell will clamour for oxygen the way flood victims do before a food-carrying helicopter,[link widoczny dla zalogowanych].
Already my heart is straining at the leash even though my body is simply cruising on the elliptical trainer. The spooky bit is that there is no sweat. There are no visible signs of physical strain but it feels like a nice work-out. Whoever said there is no free lunch,[link widoczny dla zalogowanych], didn t know about high-altitude training.
Vouching for it
Outside the chamber is John Gloster,[link widoczny dla zalogowanych], former physio to the Indian cricket team. And I m trying out the product that his company, Altitude Training Systems (ATS) sells,[link widoczny dla zalogowanych], that simulates thin mountain air conditions at humid sea level. And the explanation for what my heart is going through is simple: Less oxygen in the air inside the chamber. He is reassuring about those oxygen levels. About 88% is where we will let you be. Not beyond that.
Robbie McEwen,[link widoczny dla zalogowanych], the Tour De France winner who will be participating in the BSA Hercules Cyclothon in Mumbai on February 21, uses this training system. Shane Watson,[link widoczny dla zalogowanych], who is doing a great job for Australia and Rajasthan Royals as a match-winning all-rounder, is hooked to this method. Stephanie Rice,[link widoczny dla zalogowanych], who won three gold medals,[link widoczny dla zalogowanych], at the Beijing Olympics in 2008, also has high-altitude training as a part of her regimen.
They, and other athletes the world over, are taking a shine to this method because of the belief that people who practice at high altitudes can use oxygen more efficiently and their muscles tire later than athletes who have trained in normal oxygen conditions.
Why does altitude training work,[link widoczny dla zalogowanych]? The first thing it does is make the energy production in the body more efficient,[link widoczny dla zalogowanych]. This is how it happens.
The process
The human body during physical activity needs ATP (adenosine triphosphate) the way a teenager in a mall needs cash. ATP has energy rich bonds that, when broken,[link widoczny dla zalogowanych], release energy for the body. Now assume that the physical activity in question is running a marathon. As the runner starts off each cell in the body uses existing ATP to create energy. The problem is that the body runs out of existing stock of ATP in 10-12 seconds. That s like our teenager buying his first pair of jeans in the mall with all the cash in his wallet. As the run continues the body now raids the glycogen store inside each cell. It breaks down glycogen into glucose,[link widoczny dla zalogowanych], which it uses to make ATP. This process is slightly more time consuming as it takes almost 12 chemical reactions to generate ATP this way. If the teenager in the mall wants to buy an expensive bag or sneakers, cash can be withdrawn from the ATM in the mall but wading through the queue will be time consuming. Even this glycogen process runs its course in 2 minutes or so. Remember that all this happens without drawing on the oxygen in the lungs.
As the run goes beyond 2 kilometres or so, the body now realises that much more ATP will be needed and starts using any oxygen it can find. It draws energy from glycogen and fat in the liver through oxygen-dependent reactions.
Now this process is even more time consuming,[link widoczny dla zalogowanych], but produces huge amounts of ATP. This is like the teenager visiting a bank to withdraw cash. The queue at the cashier is long but very large amounts of cash can be withdrawn. The reaction of oxygen with glucose from glycogen produces 36 molecules of ATP and in the case of fatty acids it produces 130 molecules of ATP. Without oxygen it can only produce 2 ATP molecules!相关的主题文章：

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