Quoted post said:Originally posted by retrogeek
From my informal research I have found that there are very real differences between people with predominately fast and slow twitch muscle fibres. If you are one or the other it is very difficult to train yourself to compensate for the lack of one or the other. For example, if you are the slow twitch Olympic marathoner with an 80/20 ratio of slow to fast twitch muscle fibre all the specialized training in the world will never change you into an Olympic sprinter with an 80/20 ratio of fast to slow twitch muscle fibre.
But they can change the cross sectional area of which the muscle fibre populations cover, therefore a an endurance athlete has the potential to become a good sprinter.
Quoted post said:Originally posted by retrogeek
I can not recall any athlete who has so completely overhauled his/her physique to do such. There are plenty of examples of athletes who realize gradual changes and may go from running the 400 meters to the 800 meters, or cases like Jalabert who seem to accel at everything. But Jalabert was predominantly an endurance athlete first, probably more slow than fast twitch muscle fibers, just an extremely well-skilled cyclist.
Jalabert WAS an endurance athlete, compare him to any match sprinter or 100 meter sprinter.
Quoted post said:Originally posted by retrogeek
Obviously those who are a 50/50 balance, or there abouts,are going to be harder to categorize and they will account for a good number of exceptions to the rule. But there is a lot more to cycling than just mashing pedals as the non-cycling press would like you to believe. Tactics, training, mindset, etc., all play a role in defining what type of cyclist you can be. Cycling is too complex a sport to be narrowed down to just being determined by physiology alone.
As you said, muscle fibre composition actualy has very little to do with performance... almost to the extent at which its worth ignoring by coaches and athletes outside a reasearch setting. Muscle fibre composition is rarely a limiting factor (apart from in diseased states and elderly people), it can't be used to predict performance and cannot be measured easily; therefore its best to focus on other aspects during training and national squad/talent selection.
Quoted post said:Originally posted by retrogeek
But how to categorize Merckx???? He could do everything?!#*&$!
He was an exceptional endurance rider and as such had advatages over other endurance riders that focused on sprinting and climbing. He could never be described as a 'sprinter' and I doubt if he ever won a top level sprint event (e.g. 1km, matched sprint, kerin, etc.).