Reply to post: Doing heart rate on an instrument like that...

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Herby

Doing heart rate on an instrument like that...

Isn't very easy. They have contacts pretty close together to detect EKG pulses (typically R wave) and just count the interval between R waves (the most predominant part of the EKG, and go from there. The math(s) is pretty easy to do (I helped in patient monitoring for anesthesia back in the 70's). The big problem is getting a good signal to the device, and there are lots of ways noise creeps in.

I'm sure FitBit can put all sorts of disclaimers out there and results might vary all over the map, but the number they display is probably pretty good, considering.

Not if they can get their FitBit Flex goodie a little more water proof. I used to wear it in the shower (and that was OK), but the trip to Hawaii last year and its encounter with salt water have seemed to foul it up. It blinks nicely (when charging) but it doesn't sense anything. Oh, well...........

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