News update
May 22nd, 2012

 Can Runners Have ‘Too Many Miles on the Tires’?

Personal Best by Gina Kolata

I used to run with a guy who was unhappy with the way his performance had deteriorated over the years. In his early 20s, he said, he had been super-fast. A couple of decades later and about 20 pounds heavier, he had lost that amazing speed.

“Too many miles on the tires,” he would say. His idea was that if you start racing when you are young, you will be worse in middle age than if you started fresh when you were older.

But is it true, and if so, how does it happen? Do athletes accumulate injuries, for example, or just get mentally fatigued after competing nonstop for decades?

to read more .....

http://well.blogs.nytimes.com/2012/05/14/can-runners-have-too-many-miles-on-the-tires/?ref=running