Functional Threshold Power (FTP) is an estimation of the highest power (measured in watts) that a rider can maintain in a quasi-steady state without fatiguing for approximately one hour.
Your FTP can be used to calculate training zones when using a power meter and allows you to track improvement. We use your FTP to calculate workout intensities suitable for your ability.
To calculate your FTP a 20-minute test is typically used. After a good warm-up, ride as hard as possible for 20 minutes. Take the average power for this workout and subtract 5% to calculate an estimation of your FTP.
Typically it is suggested that you test your FTP every four to six weeks. Once you have done this, please update in the Rewire settings so that we can recalibrate your workout intensity.
If you do not know your FTP and do not have the means to calculate it currently, we use an approximate value of 200W. Then feel free to update it to a more accurate value when possible.