Improved FTP estimation (for cycling), lactate threshold and running time estimation (for running) in HRV4Training Pro

Blog post by Marco Altini

We have improved our FTP, lactate threshold and running time estimates for HRV4Trainign Pro users using Strava. The latest estimates have already been released in HRV4Training Pro, with the goal to help you keeping track of your training progress.

In case you want to jump right in, and check out our latest feature, simply login at HRV4T.com with your HRV4Training credentials. As a coach, you can access these estimates for all your athletes from the Coach panel.

This work is an extension of our previously published analysis (see "Estimating running performance combining non-invasive physiological measurements and training patterns in free-living” which was accepted for publication at the 40th International Engineering in Medicine and Biology Conference).

The FTP, lactate threshold, half and full marathon estimates do not simply rely on your VO2max or on previous running times or short tests as you can find in other products or online calculators, but relies on a statistical model combining the following:

• Resting measurements of cardiac activity (heart rate and heart rate variability).
• Physiological data during training (for example the running pace or cycling power to heart rate ratio, that we described in our VO2max estimation paper).
• Training pace, speed, power and volume.
• Training patterns (for example training polarization, or time spent at low or high intensities vs time spent at moderate intensities, as well as time spent at different speeds).
• Previous performance (automatically derived from racing events or hard intervals workouts).
• Estimated VO2max.
• Long runs or rides (number and frequency). ​

Useful resources

• Learn more about FTP
• Learn more about lactate threshold
• Learn more about running time estimation