In the past, it was defined as maximum power at around 5-minute power with 3% gradient
It seems like the outdated information that was previously given is now becoming more accurate.
What is FTP?
FTP: The most recent definition is the maximum sustainable aerobic power for 30-60 minutes, and it is the reference power for training.
One hour power: The traditional definition of FTP is defined as one hour, and one hour power is still mentioned when comparing the solo performance of professional athletes.