I'm trying to develop a belt (wearable device) from which I could measure belly stretch (exhalation, inhalation), heart pulse frequency and blood oxygen saturation data via optical EKG (reflective method). I have chosen this method since its cheaper than developing sensors for measuring the electrical pulse of a heart. And because I want to create a belt which a user could wear I need to know if it's even possible to get heart rate readings from the abdominal region.

As I'm aware there are only finger oximeters and some proof of concept oximeters for neck/wrist devices, but I could not find any device that would get readings from the abdominal region.

So what are some good places in the abdominal region that I could get valid and accurate readings for heart rate, SO2 and at the same time breathing status?

  • I think you're going to be hard pressed to get accurate pulse and SpO2 readings from the abdomen, especially in people with significant abdominal fat.
    – Carey Gregory
    May 10, 2019 at 14:44
  • Heh I didn't think about that xD. Thank you!
    – user16190
    May 11, 2019 at 6:21


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