A tool designed to estimate an individual’s Functional Threshold Power (FTP) based on data collected during a specific time-trial protocol. This protocol involves performing a maximal effort sustained for twenty minutes. The calculated value, typically derived by multiplying the average power output of the 20-minute effort by a factor, provides a proxy for the highest power an athlete can maintain in a quasi-steady state for approximately one hour.
The utility lies in its capacity to provide a readily accessible and relatively time-efficient method for determining an athlete’s sustainable power output. This determination is crucial for setting training zones, prescribing appropriate workout intensities, and monitoring progress over time. Historically, longer and more demanding FTP tests were the standard. The adoption of this abbreviated protocol represents a practical compromise between accuracy and test duration, making performance assessment more manageable for many athletes and coaches.