Blood volume pulse data

[DPMB]

Hi,

I was wondering if there is a way to access the raw data of blood volume pulse?

I already followed some suggestions here to export the heart rate data second by second but I was trying to get a beat-by-beat reading.

[shipo]

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@DPMB wrote:

Hi,

I was wondering if there is a way to access the raw data of blood volume pulse?

I already followed some suggestions here to export the heart rate data second by second but I was trying to get a beat-by-beat reading.

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Not sure how that would work given the vast difference in stroke efficiency between human hearts.  How would a wrist based tracker be able to determine home much blood is being pumped per stroke?

[DPMB]

I'm not trying to get how much blood is being pumped per stroke.

The LED lights are used to detect changes in the capillaries. The reflected signal is used to calculate the heart rate. Ideally, I would like to retrieve this signal so I could make the detection myself. If that is not possible because the signal is not being stored, I would at least want to get the time stamp of each beat. As of now I'm only capable of getting second by second heart rate measures (which are already mean values).

[shipo]

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@DPMB wrote:

I was wondering if there is a way to access the raw data of blood volume pulse?

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Ahhh, that's a bit different than what you initially wrote; I keyed off the word "volume".

[DPMB]

Ok, sorry if that was not clear the first time around. Technically, it is detecting blood volume changes (and computing heart rate from that data)...

[HelenaFitbit]

Hey hey @DPMB! I have to say, that's a pretty interesting request; perfectly acceptable to calculate detailed results for heartrate data. 

At this time this is not available through the Fitbit environment. Nevertheless, adding your idea to our Feature Suggestions page will be very helpful; this is the best place to let our Developers know about new ideas or improvements to our products and services. 

@shipo Thank you for the additional questions; they really cleared up the first response I had in mind. 

Let me know if you have any questions. Thanks for stopping by!

[SunsetRunner]

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[SunsetRunner]

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@DPMB wrote:

If that is not possible because the signal is not being stored, I would at least want to get the time stamp of each beat. As of now I'm only capable of getting second by second heart rate measures (which are already mean values).

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easy

60 bpm = 1 pulse by second

90 bpm = 1.5 pulse by second

120 bpm = 2 pulses by second

and so on

what's the interest to know if it is 700 millisecondes or 720 millisecondes ?

i'm curious

[DPMB]

Thanks for the replies!

I will make sure to check and post on the Feature Suggestions page.

@SunsetRunner I'm sure heart rate values and graphs that are made available through the app are more than enough for most Fitbit users. I'm trying to use it for research purposes and the second by second information is not enough... (for instance, I would like to be able to compare beats' time stamps between different acquisition methods).

[SunsetRunner]

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@DPMB wrote:

Thanks for the replies!

I will make sure to check and post on the Feature Suggestions page.

@SunsetRunner I'm sure heart rate values and graphs that are made available through the app are more than enough for most Fitbit users. I'm trying to use it for research purposes and the second by second information is not enough... (for instance, I would like to be able to compare beats' time stamps between different acquisition methods).

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OK

but remember, Fitbit are leisure devices, not medical

you can google "Wrist-based optical heart rate monitor"