ok, but the question wasn't "did Lemond do EPO?" (debatable IMO) the question was just about doping. I find it hard to believe Lemond could win even in the late 80's without any doping at all.
Yes, I understand your question. IMO, I don't know. LeMond said he was clean & never used PEDs in his career (?). One of his main rivals, Fignon, said he used
amphetamines throughout his career - and actually tested positive for such.
The PEDs of choice in the 80s were primarily amphetamines, anabolic steroids, testosterone & corticosteroids. But these were minuscule compared to the 02-vector power of EPO, especially with high-responders.
Furthermore, I don't think it's possible that LeMond ever used EPO. The way he & Fignon got dropped in the Peleton like they were amateurs. Lol. And look at the rocket fuel performances of the 90s with the
dramatic increases in climbing speeds - it was absolutely crazy! (check out the top-10 times up Alpe d'Huez). Big Mig, Pantani, Riis, Ullrich, Rominger, etc. It got so bad that Riis said using EPO wasn't considered cheating, as it was
"the normal preparation of a professional cyclist." Lol!