As related to the topic regarding the aerobic contribution and aerobic training for a given race : Mund said that 30% is anaerobic for rowing, implying high lactate leading during the movements, but the row back time in the air allows an important elimination of lactates, hence more than 90% of the race performance should be developped through strength-endurance aerobie training. He added that this basic training helps to go through preliminary rounds and allows rowers to be fresh once qualified for the final. This aerobic works also serves as active recovery from one workout to another which include low and high intensity bodybuilding circuit. The training don’t vary much through the season, just the emphasis, which makes me think of a vertical integration à la Charlie.
Sorry if i contributed to turn the discussion into rowing but i think the considerations here are compatible with 400m (and any other sport).