Changing FTP changes all previous training score data

Currently, updating your FTP causes a mass change to all prior workout data, rendering all the past performance data inaccurate (the data is only as good as the FTP it is attached to).

If - 12 months ago - my FTP was 250, and today I update it to 300, all my previous workouts are "downgraded" in their relative training intensity and stress scores. Which does not reflect reality because 12 months ago, these workout felt intense and stressful for my fitness level back then.

What should happen is that when you update FTP, only workouts after the change are affected.

Strava people - this is costing you money! Athletes who are serious about their data are using competitors' products and free alternatives. I am forced to use GoldenCheeteah, if you changed this one bug I'd be a premium Strava member.

 

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Comments

69 comments
  •  

    +1 unsubscribe.

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  • me three months ago: this power meter dodad is neat! my FTP is 222 which is okay I guess

    <spends three months in a pain cave> 

    me yesterday: hey look my FTP is 253! let's update strava!

    <notes that strava is under the impression that my ftp has now always been 253 so retcons me out of the pain cave>

    😡😡😡🔥🔥

    I've been a premium member for 4 plus years but new to power meters, really sad to see a lack of timestamp associated with my FTP, especially around the fitness and freshness...

     

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  • I am adding my voice to this as it is crazy that FTP history is not tracked properly and an increase on your FTP actually ends up reducing your F&F score. WTF, Strava? It's very simple: create a new table; add columns:

    • Valid From
    • Valid To,
    • FTP value,
    • Weight,
    • Athlete Id 

    Now store users FTP history there and use it for your calculations.

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  • Found this problem today when I changed my FTP. It is ridiculus that Strava havent fixed this problem yet.

    Bye Bye, premium....

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  • Accurate historical FTP values are a vital feature for power users.  What a critical flaw in the platform and there's no reason to think it will ever be fixed.  I guess I've outgrown Strava - it no longer just works.  Time to move on and apply my Premium membership $$ elsewhere.

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  • How is this still not fixed? Why am I paying for faulty analytics?

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  • Just updated my FTP and noticed that my fitness level dropped considerably.

    Using the new FTP for all historic workouts makes no sense whatsoever. This renders the Fitness and Freshness completely useless.

    I have TrainingPeaks as well but this does need to be fixed.

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  • 3 years premium member, 2 months power meter user - bye bye premium - hello training peaks!

    I guess Strava doesn't give a rats ass about this, since the power meter users who are in the segment "not so serious that we use dedicated software, but still competitive enough to use strava" mounts to only a fraction of the premium members. 

    Out.

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  • Only got a power metre recently so this bug was handy while working out a more accurate FTP. Whilst it was cool to see a bunch of functionality suddenly available with the power metre, this seems a fairly fundamental flaw that invalidates most of that functionality (as your FTP changes).

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  • I this isn't fixed by the time my membership comes up for renewal, I'll cancel premium as well. Really pissed me off. My FTP went from 250 -> 345 (I know!) and I've been a lazy ar$e apparently for months going back now...

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  • While Strava has failed to even address this, a wonderful API developer has addressed this to some degree with his Chrome plugin for Strava.  Support him: https://twitter.com/champagnethomas/status/1039820161061203968

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  • FYI the latest version of stravistix (v6.5) now support athlete settings over time (@see https://twitter.com/champagnethomas/status/1039820161061203968)

     

    Download plugin: https://thomaschampagne.github.io/stravistix/

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  • Jess - this is some sort of joke, right?

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  • Joke?

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  • Not aimed at you Thomas, you've done a magnificent job with the plugin!

    Aimed at Strava's official reply last week (in the form of "Jess") - wandering in here years after the fact with an empty "I'll pass this on, but no promises".  

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  • How on earth has this not been solved yet?

    I appreciate that there may be data engineering/science challenges around implementing  this but you are a fitness analytics service - be better, this is what you do. This is incredibly basic functionality for fitness tracking. Improving your fitness improves your FTP, thus a new increase in FTP should at the very least not lead to a historical fitness decrease. If you can't accommodate power meters and manage FTP correctly, don't allow it as an input!! This is the main thing I pay for Strava premium for and expect better.

    I will be downgrading my subscription and trying other fitness analytics tools until this is fixed.

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  • +1 - Just started training, but I also signed up for Premium for the additional analytics. For a feature - if you want to call it that - really we’re just asking for accurate historical data and calculations based on that data - that has been requested for so long, I’d hope to see some movement and communications by Strava.

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  • Seriously ridiculous. Please fix this. I’ve just swapped from virtual power training to a powered meter so seen a big change in my FTP number, now my fitness freshness chart will be junk for 42 days again. As well as my historical data not being reflective of what I was adoring ants feeling at the time.

     

    Changing HR zones does not affect past workouts relative effort scores, why does a change in FTP?

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  • This post was made almost exactly two years ago and yet this function has still not been implemented into the fitness/freshness graph. It's also taken almost two years for an official response to this post and the best we get is "its been passed on, maybe it'll get done at some point in the future, maybe".

    My FTP does not stay the same year round and I would like an accurate graph that reflects that my fitness level changes over time. This needs to be far higher up the priority list considering this has been an issue for years. Please fix this. 

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  • Incredible that Strava could botch this so badly and continue to refuse to fix it.  It makes Fitness and Freshness scores worthless and I'm guessing a lot of folks are paying them specifically for this feature.

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  • Wow yeah, this is really annoying... Update your FTP and it totally screws all your historical data. Don't update your FTP and it screws your current activity intensity %. Huge oversight in the planning of this feature and now it takes two years to fix? lol what a joke 🤦

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  • Same is true for Running Pace Zones as well

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  • Still an issue after two years.Why shouod I pay to be a premium member and get analysis that isn't accurate looking backward?

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  • Stopped paying for premium after several years' membership because of this issue.  Really makes it useless for training.  Strava is a nice social media service, but nothing more, because of this one bug, which has been in the dead center of the radar for... forever.

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  • Come on Strava! This is just ridiculous. How can you claim with a serious face this is a platform for athletes, with such elementary failings in statistics. They’re useless.

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  • "Elevate" fills this hole at the moment with "Dated Athlete Settings" => https://thomaschampagne.github.io/elevate/

    Hope they we will implement this feature asap !

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  • This should also apply to 'Pace distribution' for running. As you get better and improve the PR used for the pace distribution calculation, it also applies the new calculations to all activities. It'd make sense that the pace distribution remained in sync to the PB at the time.

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  • yes, please

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  • Still an issue...improved my FTP by 20 watts and my "reward" is a F&F score that just decreased by 4 points. Instead of working on new subscription plans to recruit more subscribers and make more money...maybe fix this really basic problem. Just add a timestamp to FTP that doesn't change any ride prior to the adjustment! This is an absolutely critical flaw in a software which is purportedly designed to measure evolution and progress of fitness. 

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  • Justin wrote "software which is purportedly designed to measure evolution and progress of fitness. "

    I'm afraid that went out the window many years ago. The software is only designed to make money. And a few grumpy users (me included) venting in an obscure feature discussion won't stop 1000s of new "Summit" subscriptions...

    Too bad Strava isn't on Yelp or Google reviews, but you can review the Strava app on your Android or iPhone ... ?

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