What is Functional Threshold Power (FTP)?

Functional Threshold Power (FTP) is the maximum sustainable power output one can maintain for 60 minutes.  VeloPro uses your FTP to calculate your training loads.  

Your Default FTP (Functional Threshold Power) is the number you initially entered as your Default FTP number. After you ride your first FTP Check, VeloPro Inc uses the adjusted test results (best 20 minute power minus 5%) in place of your Default FTP.

The first ride of the season marked as an FTP Check will be used to calculate the starting FTP value for the entire season. This is because the formula for predicting FTP over time needs a stable beginning point. All rides marked as FTP Checks throughout the season contribute to improving the accuracy of your predicted FTP. However, they do not alter the Default FTP like the first FTP Check of the season does. 

Conversely, VeloPro Inc calculates training loads using the most recent FTP Check. The Training Progress graph on your Dashboard is based on having at least 5 FTP Checks (and at least 20 rides) in the past 200 days.