Originally Posted by Steven Low
What separates elite endurance runners isn't Vo2max because all of them are up there... it's the lac threshold that is what is correlated with finishing place.
It's power output at lactate threshold, not lactate threshold, that is really important.
If you'd like to learn more about youth training, I hear Drabik's book is highly recommended.
If you'd like to learn more about elite training, Block Periodization by Issurin is good. I think he's a kayaking guy, but I don't know if that relates much to rowing.