Wrong calculation of the anaerobic threshod app

[albiurs]

Hi,

According to Joe Friel’s blog post at the TrainingPeaks website, there’s an error in the Suunto’s anaerobic threshold sport app:
https://www.trainingpeaks.com/learn/articles/joe-friel-s-quick-guide-to-setting-zones/

The lactate threshold heart rate (LTHR) is clalculated correctly by Suuno’s anaerobic threshold app as the average of the last 20 minutes from the 30 minutes run. However, the Pace Zones (Running) are based on the Functional Threshold Pace (FTP), and have to be calculated as the average pace for the entire 30 minutes (not only the last 20 minutes like the anearobic threshodld app does).

This is from Joe Friel’s blog post linked above:
“Setting Pace Zones (Running)
Step 1
Determine your Functional Threshold Pace (FTP) using either a runner’s GPS device or an accelerometer. To do this, warm up and then run for 30 minutes just as described under “Setting Heart Rate Zones, Step 1” above. Your FTP is your average pace for the entire 30 minutes (not the last 20 minutes). This is best done early in the Base period and then every 4 to 6 weeks thereafter. The more times you do this test the more accurate your FTP will become.”

Thanks for fixing.

[isazi]

I will forward this to the app developer, so they can ask the sports scientists involved. Thanks.

[NeaLuu]

@albiurs Thanks for this! and thanks @isazi for the notification. The calculations were indeed wrong, we’ll fix this