Originally Posted by Tony P.

I agree with what you're saying here. But it's different from your earlier statement. Training, as you say, is "very individual". As such it's not possible to predict physical improvement in 6-8 years. For example, I'm 72 and it's not likely I can achieve substantial physical improvement 8 years from now no matter how hard I try.

My point is the same a 6-8 year projection is pure conjecture. That is, 100 out of 100 athletes may reach their potential in 6-8 years but that says nothing about the 101st.