How to translate FTP based sessions into HR zones
Open up the relevant session in TP
- Double click on the blue bar chart detail to open up the Structured workout builder.
Once in the builder – use the drop down menu to change Units from % Functional Threshold Power to % Threshold Heart Rate
Once switched to % Threshold Heart Rate you will need to change the % of the different sections to map to the correct HR zones
As the sessions were originally written in % FTP – this will still be present and need to be changed
In the above example – you will need to change the values from
55% change to 80%
70% change to 85%
For other sessions this table will help you map the required changes to %
| Required FTP % | Required LTHR % | |
| Zone 1 | Less than 55% of FTPw | Less than 81% of LTHR |
| Zone 2 | 55% to 74% of FTPw | 81% to 89% of LTHR |
| Zone 3 | 75% to 89% of FTPw | 90% to 93% of LTHR |
| Zone 4 | 90% to 104% of FTPw | 94% to 99% of LTHR |
| Zone 5 (FTP) Zone 5a (LTHR) | 90% to 104% of FTPw | 100% to 102% of LTHR |
| Zone 6 (FTP) Zone 5b (LTHR) | More than 120% of FTPw | More than 106% of LTHR |
| Zone 5c | More than 106% of LTHR |
- Click on SAVE AND CLOSE to complete the update and your workout will upload to your device with the correct HR values to guide you through the cycle