What data is used to calculate real-time MPA please?

Are you able to share what data is used to calculate the real-time MPA please, is this just time and magnitude of power above threshold or does it also look at Heart Rate too?

Not HR as I don’t ride with a HR strap generally and it works fine. Just power and fitness signature I think.

As far as I understand, the MPA is calculated such that power above threshold reduces MPA, and more power above threshold reduces MPA faster.
Time above threshold is also taken into account so that MPA goes down faster as you spend longer above threshold. Details are probably proprietary, but you could probably back-engineer the equation if you really wanted to.

Thanks Andrew, that’s all I was looking for - just what data points influenced MPA rather than the specific behind it (I assumed that wouldn’t be shared).