Just curious, is the new ai ftp détection a now considering the hr data in his assessment?
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Didn’t read the whole thing but I don’t use a heart rate monitor.
Nate says new AI only cares about watts and hr.
What does that mean for me and users who don’t use hr?
The new AI is useless for us?
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I don’t think that is what he said. He also said it cares about RPE. And I’m 90% sure that it cares a lot more about your RPE rating than HR. They are using it to predict workouts based on expected RPE, so RPE has to be near as important as Power in the model.
From what I understood HR was added as it improved the accuracy. It is not needed for the AI to function. Nothing is lost, however by supplying it HR, you can take it to the next level. Its your decision if you decide to do so, recording HR is easy and no reason not to do so.
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Sorry, not sure I understand, if nothing is lost but adding hr takes you to the next level, stopping wearing the hr would be a step down … so something lost ?
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I answered the question of LaFarrapona. He doesnt record heartrate. So there is no stopping of HR.
However if you are anti recording HR, there is nothing that says that the new AIftp model (can use HR but doesnt need it), works worse than the old AIftp model that didnt use it, even when it was recorded.
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The person they’re replying to doesn’t wear a HR monitor. So “nothing lost” is valid in this scenario.
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Cheers for clarrification
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Ok. Hopefully it heavily uses the rpe feedback.
I was wondering because in the first post of this thread pictured.
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It’s really odd to me how resistant people are to wearing an HRM even when told it will improve their results.
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Ditto. Even for your own validations against workouts. I always remember Chad at TR being a big proponent of HR data.
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good point but to be fair, we are told years HR is useless
Not sure that is true. We were told that HR is unreliable for determining what level to train at… but that it is useful to use HR to see what impact it had on us. i.e. useful to look at after the ride.
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That’s wild.
Power is literally a measure of the work done - but each to their own 
I think heart rate is very important - I’d just put it behind power and RPE.
One concern I do have is that I find heart rate measurement to be less reliable than power measurement.
I’ve had far more instances of HRMs reporting incorrect data than PMs - and bad data is worse than no data.
I hope the TRs models are good enough to discount dodgy HR reading.
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HR is still not important for training. Watts are King.
End message.
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I can’t agree with this. I find that HR provides me a lot of context WITH power. If it responds quickly to changes in power, if I can hit higher HR pretty easy, it usually means I am relatively fresh. If it is laggy and doesn’t correlate well with usual power to HR, generally tells me I am carrying some fatigue. That said, RPE can give some of this as well.
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It’s also super helpful in the real world. On a race or a group ride, my HR and RPE tell me far more than Power does, and using HR while training teaches me what to look for.
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Disagree. Much more nuanced than that.
For some people - HR Rate is more random, for others it’s extremely reliable, provides a ton of context intra-workout.
I’m one of those people that has an extremely reliable HR where I can even rely on it when I go to altitude. In some senses - it’s better there than power because of the changes in FTP / capacity I can see even within one climb.
I don’t see why anyone wouldn’t at least log the data,
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HR has always been an important metric for training. Is it essential? No, but neither is power 
Power, HR and RPE are all metrics that help inform training and are all very useful
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I never look at my HR in a race.