rekrunner wrote:
That's exactly my doubt. Do you have a hard time developing it back to the same level? I don't believe that even several months of aerobic only training causes permanent speed loss. After an off-season aerobic phase, 18 weeks seems like it's long enough. It's not a question of common sense, but experience.
You have the experience of how top develop or even just to maintain the speed of the top 800m runner, by doing long base phases of just aerobic running?
You don´t have 18 weeks, remember, the speed should be at the top level already before starting to build the anaerobic power. After neglecting the speed for a long time you have a high risk of getting injured once you start the speed work again, you have to start carefully, you cannot start to do full rounded speed workouts right away. To possibly develop speed (not just trying to avoid loosing speed permanently) it´s not the best strategy to do maybe months of just aerobic running. I don´t think that Coe or Rodal or Juantorena etc could have been as fast without year-round speed work. And it´s increasingly difficult to even maintain it as you get older.