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HRV sleep values vs HRM belt plus Elite HRV app

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  • M Offline
    Mauerwegler @mikekoski490
    last edited by Mauerwegler 23 Dec 2023, 10:14

    @mikekoski490 The HRV topic has come up again, especially comparing to the Elite HRV app. See https://forum.suunto.com/topic/10018/hrv-overnight-readings-thoughts/

    Vertical All Black
    Spartan Ultra Stealth Ti (with Polar H10 or Suunto Smart Sensor)
    Vector
    iOS Suunto App (beta)

    1 Reply Last reply Reply Quote 0
    • L Offline
      larrybbaker
      last edited by larrybbaker 15 Jan 2024, 14:44

      I see issues also between what the Vertical reports and what I get through Elite HRV and Apple Watch using SleepWatch app.

      SV reports any where from low 20s to a high of 42-45 once or twice. 7 day average of 28.
      Elite HRV and Sleepwatch app [AW series 8] are consistently in the 50s for HRV.

      I believe I read soemthwere that Suunto only looks at the first 4 hours of sleep? Is that correct?
      The SleepWatch app appears to monitor it over night.
      Elite HRV uses the morning readiness a 2.5 minute test but random reading I have done over the course of a day always are similar - in the 50s.

      Sensor/Suunto algorithm issues or?

      SV Solar
      iPhone 16 Pro

      S 1 Reply Last reply 15 Jan 2024, 15:11 Reply Quote 1
      • S Offline
        Swaddy61 Silver Members @larrybbaker
        last edited by 15 Jan 2024, 15:11

        @larrybbaker As said above, this has been discussed in the other thread. The summary was that even the units for Elite and Suunto are different, so you are comparing apples with oranges!

        I think it is more important to follow the trends - i.e. if you get a reading above or below your norm on Suunto, then you should be a little more cautious, rather than looking at, and comparing, an absolute value with a different measurement system from, e.g. Elite.

        I also use Elite and Suunto. Usually, but not always, if I have an out of norm reading on one, then I will on the other - regardless of the actual absolute values.

        SV Ti All Black, Coros Apex Pro, Ambit 3 Peak, Ambit 3 Sport (sold), Ambit 2 (Sold), X10 Mi (Retired), Quest (Sold), T3 (Sold), T6C (Retired as unfixable - Suunto gave me a big discount on Ambit 2!), Polar H10 belt, Suunto Smart Belt

        L 1 Reply Last reply 15 Jan 2024, 19:05 Reply Quote 1
        • L Offline
          larrybbaker @Swaddy61
          last edited by 15 Jan 2024, 19:05

          @Swaddy61 Thanks! kind of what I have been doing - just had not seen this discussion before.

          SV Solar
          iPhone 16 Pro

          M 1 Reply Last reply 15 Jan 2024, 22:01 Reply Quote 0
          • M Offline
            mikekoski490 Bronze Member @larrybbaker
            last edited by 15 Jan 2024, 22:01

            @larrybbaker Seems like there are quite a few ways to get an HRV score, so yes making sure you are watching trends over the raw number is the way to go. My Suunto and Elite HRV trends always match. Below are what I found on the web for all the difference ways to measure HRV:

            Parameter Unit Description
            SDNN ms Standard deviation of NN intervals
            SDRR ms Standard deviation of RR intervals
            SDANN ms Standard deviation of the average NN intervals for each 5 min segment of a 24 h HRV recording
            SDNN index (SDNNI) ms Mean of the standard deviations of all the NN intervals for each 5 min segment of a 24 h HRV recording
            pNN50 % Percentage of successive RR intervals that differ by more than 50 ms
            HR Max − HR Min bpm Average difference between the highest and lowest heart rates during each respiratory cycle
            RMSSD ms Root mean square of successive RR interval differences
            HRV triangular index Integral of the density of the RR interval histogram divided by its height
            TINN ms Baseline width of the RR interval histogram

            Past Suuntos: X-Lander/Observer/T6/X9/X10/X6HR/CORES/Ambits/Spartan/9P/9PP Ti/Vertical Ti

            Current: Suunto Race Ti

            Past other GPS watches: Polar Vantage V; Garmin 6X Pro Solar; Coros Vertix 2

            Suunto App running on Google Pixel 8/Android 14

            1 Reply Last reply Reply Quote 1
            • F Offline
              fabula670
              last edited by 24 Jan 2024, 10:20

              A note of mine about my actual experience with HRV:

              • just after resetting the watch (due to calibration issues - there’s a topic by me, btw.) my HRV range has experienced some inconsistency, as the watch shows that the normal range is 26-30 while in the app has remained the previous one (23-27).

              • after a bit more than a week, watch shows always the same but app shows 23-28.

              1 Reply Last reply Reply Quote 0
              • O Offline
                Oxhill_Runner
                last edited by 29 Nov 2024, 06:27

                Hi all. I have a Suunto 9PP and see a large difference between EliteHRV rMSSD readings and the 9PP values (also rMSSD).

                My watch average is around 55-60 with a peak of 69msec but I did a reading this morning with EliteHRV using the Suunto HRM and it was 120msec, which is about right for previous readings too.

                This is a huge difference, so my question is can both be compared directly ? @suunto maybe you can answer?

                Thanks

                M 1 Reply Last reply 1 Dec 2024, 11:02 Reply Quote 0
                • M Offline
                  maszop Bronze Member @Oxhill_Runner
                  last edited by 1 Dec 2024, 11:02

                  @Oxhill_Runner These are completely different things being measured.
                  Another identical question, which has already been answered here.

                  O 1 Reply Last reply 17 Jan 2025, 05:18 Reply Quote 1
                  • O Offline
                    Oxhill_Runner @maszop
                    last edited by 17 Jan 2025, 05:18

                    @maszop
                    Can you explain why how completetly different metrics? Both are using units of mSec rMSSD …

                    M 1 Reply Last reply 17 Jan 2025, 15:16 Reply Quote 0
                    • M Offline
                      maszop Bronze Member @Oxhill_Runner
                      last edited by 17 Jan 2025, 15:16

                      @Oxhill_Runner Without going into more advanced stuff, if you read here and in other threads, you would notice that the measurements are taken in a different stage of sleep.

                      It’s strange that in the months since the last message you haven’t found time to read about it - you have all the information provided here.

                      O 1 Reply Last reply 17 Jan 2025, 18:30 Reply Quote 2
                      • O Offline
                        Oxhill_Runner @maszop
                        last edited by 17 Jan 2025, 18:30

                        @maszop

                        Hello maszop,

                        Thank you for taking the time to be patronising. Comments like that are the reason why I dont spend a lot of time on forums. But looking at your profile you seem to spend a lot of time commenting, fair play to you 🙂

                        There a saying I herd thats says ‘in an experts mind there are few options - in a beginners there are many’

                        … you are definitely an expert

                        Peace 🙏

                        M 1 Reply Last reply 17 Jan 2025, 18:56 Reply Quote 3
                        • M Offline
                          maszop Bronze Member @Oxhill_Runner
                          last edited by 17 Jan 2025, 18:56

                          @Oxhill_Runner I am far from an expert.
                          Let’s just respect the time of others. They also don’t have the time or desire to write the same thing several times.

                          Best regards

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