Originally Posted by kcjc

Unless things have changed recently, Zwift's automatic FTP detection (like every other app) and default tests, test high. Hunter Allen's original protocol is a 5-minute VO2 max test followed by a 20-minute time trial. Without the 5-minute blowout, your FTP test result will be high. FTP, like all psychological thresholds, is not tied to an artificial time constraint. It happens when it happens. That is to say, it's NOT one hour. Your time to exhaustion is however long you can hold it. TSS is set to an hour. I prefer Kolie Moore's FTP protocol, https://www.trainingpeaks.com/blog/t...ing-protocols/.