coach d wrote:
Have you guys heard of something called overtraining?
Everyone who has coached at high school knows there are less talented people who win by working harder AT THAT LEVEL, but at the top (Olympic/professional) level everyone works as hard as they can, taking advantage of every "edge" (I mean clean edge here) they can. You can take advantage of modern scientific knowledge to train more efficiently--outsmarting the competition if you can't outwork them--but there is an upper limit to how hard you can train, and that's when overtraining disease sets in.
The only way to train harder than this upper limit is with drugs. I have not seen evidence presented that Ledecky is training more technical than the competition (like Salazar if you discount the obvious drugs).
The science of coaching swimming has come a long way, and most elite coaches know what their swimmers can handle and what they can't. Same for running these days. Over training is no longer a huge issue for elite swimmers, as it may have been some years ago. Also, remember that swimmers, due to the lack of bodyweight effects turning their muscles and connective tissue into mush, can handle far more intensity, and on a daily basis. There are no "easy days" just days that are not as tough.