они знают анаэробный порог каждого велопидора?
Контора которая делает эту метрику, дает довольно мутное определение.
At the heart of the Race Centre is the Red Zone, which shows who has and who has not been riding above a sustainable effort. The Red Zone percentages help to highlight the riders who are likely to burn out and who could come on strong at the end of a race.