Originally posted by Harveybirdman
Well it's not physically impossible but it is very difficult. There are 2 types of muscle fibres, red fibres and white fibres and they have different functions. The white fibres are mainly for slow movements and are also involved in posture. These fibres are extremely difficult to tire.
The red fibres are mainly involved in explosive rapid movements and tire very quickly. Marathon runners when they train will develop lots of white muscle fibres hence the phrase 'if you're going to run a marathon you don't train to run a sprint'. Sprinters will develop red fibres when they train as they need the explosive rapid movements.
Ever seen a sprinter at the end of a race? They are usually panting like a dog and hyperventillating to repay 'the oxygen debt' incurred during their 10 second run. Does Ryan think these sprinters aren't fit because they can't run for 10 seconds without getting out of breath?
Contrast a marathon runner at the end of a 2 HOUR race. Usually they just collapse with fatigue, they are rarely hyperventillating unless they've had a sprint finish.
So what I'm trying to say is : Mark Gonzalez has explosive pace. He has developed more RED muscle fibres than white muscle fibres so he can run fast. They pay off from this is that he will tire much quicker than someone who has developed more white muscle fibres. So if we want him to be able to run at full tilt for 90 minutes, he will lose the explosive pace which makes him so effective as a winger.




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