Has anyone made experiments with PPW "Pulse wave velocity" and diet?

[Agaricus (Gary Isaac Wolf)]

There’s been some, but not extensive, discussion of Pulse Wave Velocity in other threads:

Withings & Pulse Wave Velocity

Withings’ new Body Cardio scale is supposed to be able to measure pulse wave velocity, an indicator of arterial stiffness. Any idea how they do it? You could calculate the pulse wave velocity using a user’s height and the exact timing between each heart beat’s peak in the ECG and the moment the pulse is detected in their feet. But can you get a reliable ECG signal from the feet?

Withings body+ vs. Withings body cardio

I’ve been thinking a long about buying a body fat scale. I know they aren’t accurate, but I want to use it for calculating the weekly/monthly average and seeing trends (To see if I’m gaining muscle or losing fat). The only scale I can find with public API is withings, and they have these two models: Withings body+ Withings body cardio As far as I understand the only difference is that Withings body cardio has pulse wave velocity, to measure arterial stiffness.But will this metric be useful f…