Consider This wrote:
dan_cooley wrote:Yes but if you start at 21 and train intelligently for 5 years w/o getting hurt you'll be a lot faster than you were at age 22, no matter how "hard" you train.
Sure, but I doubt you'll be that much better than you were at 23.
That still doesn't make sense. The improvement curve is so much steeper, as you've said, for an untapped runner. Two years of training for an untrained runner can MAKE a huge difference, whereas for someone like me, who has run basically the same times for 5 years w/ minimal improvements, it's a longer process.
Each year makes an even BIGGER difference for a new runner.
I'm trying to think of a good analogy but I can't. Something like: "instead of studying spanish intensively for 2 years," why don't you just study twice as long each day for 1...you'll be exactly as good at Spanish." It just doesn't make sense.
There are not unlimited short term returns. Some aspects of training take a great deal of development to get to. Say for instance that the OP wants to run a 2:30 marathon. Well, a common predictor workout would be 12-16 miles @ MP. That's faster than his 6k PR pace, isn't it?
Training twice as hard for a short term period still isn't going to get him to the point where he can do a workout effort for 4+ times the length of the pace of his 6k PR. There are too many intermediate steps of fitness along the way.
No one's going to be in, say, 17:30 shape halfway through their marathon buildup and suddenly be in 2:29 shape two months later just b/c they are new at it. They simply won't be able to handle the increase in both volume & intensity that quickly.
And by no one I mean no one w/ mortal talents.