eFTP for all sports

Estimated FTP is now calculated for all sports with power setup (you have captured an FTP at least). It seems to work well for running but will have to see for other sports. When your eFTP goes up you will get an FTP up achievement on the activity for runs, rowing etc. just like for cycling.

It decays slowly if you reduce training load.

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From just the few runs I’ve done this week, it seems to be on the money. On my Monday run, Stryd gave me a CP of 282, and I got an eFTP of 277. That’s less than 2% difference :+1:.

This site is awesome. If you aren’t a paid subscriber, stop being cheap and sign up!

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I might suggest a threshold is added for minimum duration of an effort that triggers new FTP calculations. Another option (awesome if possible) is that you start to calculate W’ Capacity as well. I had a race Saturday with a big 20 minute effort and you (and Zwift and Garmin) all reported the new FTP within a couple points of each other. You also identified a middle step on another Race I did earlier in the week from a 13 minute effort which was likely correct. However, I did a race today and dug deep into my Anaerobic Reserve and put in a big 3 minute effort (climb followed immediately by a sprint) which you reported as a HUGE FTP increase.

I can deal with the occasional error, but just giving you feedback on your awesome site.

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Wesley, you can set the minimum duration for threshold; go to settings and below your Power Zone table is a value you can change for eFTP, in seconds.

For W’ you need to go to the Power section and complete a few values there.

Once done, you can plot W’ on your workout data.

I know David have a “how-to” in the forum; will try find it and post the link, unless someone else does it before me.

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Tx @Gerald … this has come up a few times but I couldn’t find a comprehensive post. Will need to do one.

@Wesley_Stocker Originally I used 180s as the default min duration for eFTP but have since changed it to 5 minutes. 3 minutes is too short. But older accounts will still have 180s.

Hi David,
I’m sure you’ve explained how to setup and use W’ in another post.

Thanks for pointing out that threshold value, I wasn’t aware of it previously, and it sounds like it should address my immediate concern. I do have W’ setup and regularly review the graph, it’s my favorite way to visualize “burned matches”. However, I recall reading previously that the W’ Estimate that appears on the Power Profile Page wasn’t actually a calculation, but just a value read from some Chart relative to FTP values.

W’ is estimated by looking for the most energy spent above eFTP on the power curve. So it is relative to eFTP not CP. So for example if you change that threshold to 5 mins that 3 min effort might well be what sets your W’.

You can also change the power model to “eCP: Single max effort & Morton’s 3P” which will give you CP and W’ estimates using the same algorithm.

You have these options to calculate W’ Prime:
Screen Shot 2021-12-20 at 19.32.09

If I use the Morton’s 3 parameter CP then I get the same as in WKO5.

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