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    Zonesense readings

    Scheduled Pinned Locked Moved Suunto Race S
    31 Posts 13 Posters 1.9k Views 12 Watching
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    • Brad_OlwinB Offline
      Brad_Olwin Moderator @Dragan
      last edited by

      @Dragan The example that you provided is not what ZS is intended for, I think you realize that now. I completely agree with @Ghost, ZS is a game changer for me and I use ZS for most runs. (Not for 2 min hill intervals that I just finished a block of). After using RPE to gauge my runs for well over a decade ZS matches my RPE well. Where ZS is especially useful are long runs where I feel fatigued by the end and don’t think I should. ZS confirms my feelings are accurate. I will use ZS to better adjust my efforts at the beginning of ultras.

      Vector/T6c/Ambit 3 Peak/S5 Copper/S3/S7 Ti/S9 baro Ti/S9P Ti/S9PP Ti/Vertical Ti/Race Ti/RaceS/Ocean/Wing

      1 Reply Last reply Reply Quote 4
      • S Offline
        Stavrogin @ChrisA
        last edited by

        @ChrisA I think for a generation of Whoop/Garmin/Oura kids who cannot remember a time when the only running watch was a timex ironman this can probably be very frustrating. We have so many people now that rely on their watches to tell them what to feel or think about a workout. I think it is super important for any athlete to not rely on algorithms and upsold company metrics to tell you how a run went.

        The magic of Suunto and the runners that it sponsors like Courtney Dauwalter is that they will not promise you gimmicks like body battery and stress scores. They will tell you to learn how to listen to your body as you start to build fitness. They will tell you to check in with your body daily to determine how you feel rather that look at a smartphone app.

        RPE mixed with heart rate tracking can be a huge part of learning how to train. Zone Sense helps me confirm that information. But it is not a magic button and it does take some savvy and dare I say research (ie reading what kind of workout it is actually for) to understand what it is that it is tell you.

        One example I have is I did a long intervals session where I thought the RPE was 9-10. The intervals were long enough to register with zonesense and how I interpreted the information was maybe I could have done a bit more.

        Suunto Vertical, Race, Race S and Run Currently using Race 2

        1 Reply Last reply Reply Quote 3
        • Max MelchiorM Offline
          Max Melchior @Łukasz Szmigiel
          last edited by

          @Łukasz-Szmigiel I really don’t understand the aggressive/dismissive tone attitude on this forum. It’s entirely voluntary to be here and help other people who have questions about an interest we all share.

          I hope Suunto can spare some resources to answers questions, moderate, and demonstrate the community culture they want to develop.

          Łukasz SzmigielŁ Ian BeveridgeI 2 Replies Last reply Reply Quote -1
          • Łukasz SzmigielŁ Offline
            Łukasz Szmigiel @Max Melchior
            last edited by

            @Max-Melchior did you find my response aggressive or dismissive?

            S9PP 2.44.48 beta

            1 Reply Last reply Reply Quote 3
            • Ian BeveridgeI Offline
              Ian Beveridge
              last edited by

              I’ve spent hours studying all the videos and used this system for a while - but ZoneSense still seems to defy commonsense to a large and very fuzzy degree.

              Starting with the chart from Dragan showing the intervals - HR goes up and ZoneSense plummets - obviously not working. Nobody can explain however how to interpret how the algorithm fails in terms of HRV and associated lactate levels.

              It’s clear also that running/cycling at a relatively steady pace the line traced by DDFA index is still WILD to the degree that most of the time it’s impossible to tell what’s due to “not working” or very strange metabolic behaviour.
              WhatsApp Image 2025-09-02 at 23.25.49.jpeg
              Why is the DDFA Index line spiking all over the shop? What does it mean when the aerobic zone bounces like a yoyo to the bottom of the chart?
              (Using here a Polar H10+ chest strap with slightly salted water applied to the strap and skin for good contact. The aerobic threshold was calculated to be 154 bpm by ZoneSense. Was “barefoot” running with a stride cadence of 180.)

              isaziI 1 Reply Last reply Reply Quote 0
              • Ian BeveridgeI Offline
                Ian Beveridge @Max Melchior
                last edited by

                @Max-Melchior Well said! I think the aggressive/dismissive attitude is because they really aren’t very confident. ZoneSense is a bold move by Suunto but it needs more detailed clarification due to its instability. So far I’ve found the ZoneSense watch face itself appears practical when working out but the phone app graphics are scary.

                1 Reply Last reply Reply Quote 0
                • isaziI Offline
                  isazi Moderator @Ian Beveridge
                  last edited by

                  @Ian-Beveridge there is no point in looking at the graph, what matters is just the zone you are in

                  Watch: Suunto Vertical Ti

                  Blog: isazi's home

                  Ian BeveridgeI 1 Reply Last reply Reply Quote 0
                  • Ian BeveridgeI Offline
                    Ian Beveridge @isazi
                    last edited by

                    @isazi Thank you for the clarification and simplification.

                    So…

                    New thresholds are calculated for each workout and the 3 zones are all that counts. The scales and graphs are meaningless.

                    Today on my two hour bike ride there was no measurement of ZoneSense thresholds in terms of heart rate. I’ve only seen this difference shown for aerobic threshold - never anaerobic threshold. Tying the two systems together like this is also very useful - when it happens - if it happens.

                    isaziI 1 Reply Last reply Reply Quote 0
                    • isaziI Offline
                      isazi Moderator @Ian Beveridge
                      last edited by

                      @Ian-Beveridge to be honest, also the thresholds do not matter if you are just using ZoneSense 😄

                      Watch: Suunto Vertical Ti

                      Blog: isazi's home

                      Ivan De RasisI Ian BeveridgeI 2 Replies Last reply Reply Quote 0
                      • Ivan De RasisI Offline
                        Ivan De Rasis @isazi
                        last edited by

                        Ieri sera al dal 16 km in poi stranamente la mia fascia cardio ha smesso di funzionare

                        Suunto 9 Baro
                        Suunto Vertical

                        1 Reply Last reply Reply Quote 0
                        • helgonet12H Offline
                          helgonet12
                          last edited by helgonet12

                          Hi sorry for posting this here as well but there are no answer in others treads. I and others here in the forum do not get any ZoneSence data at all after the latest firmware update. Nothing on my side have change and it does not work on my Vertical och Race 2. Before the latest update work as it should. In the watch app it only states waiting for data, on iPhone app (latest beta version) it does not show up at all.

                          1 Reply Last reply Reply Quote 0
                          • Ian BeveridgeI Offline
                            Ian Beveridge @isazi
                            last edited by

                            @isazi Okay! But don’t the ZoneSense thresholds and their shifting values inform us of anything? …or am I still stuck in an out-of-date paradigm?

                            1 Reply Last reply Reply Quote -1
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