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Suunto ZoneSense

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  • V Offline
    VoiGAS Silver Members @Mattg576
    last edited by 3 Mar 2025, 19:04

    @Mattg576 Right, I also think it works just in special circumstances. I watched a lot of the videos and I understand it reacts slowly. But how long am I supposed to run in the red zone.
    But maybe it will improve and maybe I also find a usecase for it


    Race S
    Ambit3 Vertical

    2 1 Reply Last reply 3 Mar 2025, 20:23 Reply Quote 0
    • 2 Offline
      2b2bff @VoiGAS
      last edited by 3 Mar 2025, 20:23

      @VoiGAS Janne said there is a lag of about 2 minutes that ZoneSense needs to react to something. So you need a prolonged effort of those two or three minutes to make any sense of ZoneSense. It is nothing for short periods. Also it is said that the actual curve doesn’t matter, only the color…
      If you match that with your workout, you see that the increased effort beginning at your 30 minute mark pushed it in the yellow Zone about 10 minutes later.

      ZoneSense works best, if you have longer intervals with constant effort.

      Personally I think the tool is interesting, but it doesn’t fit every job. And it is still in the early stages. When Suunto can bring down that 2 minute lag it would be even more helpful…

      Suunto Race S
      Garmin Epix Pro

      V 1 Reply Last reply 3 Mar 2025, 21:47 Reply Quote 0
      • V Offline
        VoiGAS Silver Members @2b2bff
        last edited by 3 Mar 2025, 21:47

        @2b2bff I know, but its not like there was no effort between the peaks. I just did them to reach the red zone. If I would have done it in a race it would have been over for me, but Zonesense signals ‘Everything is ok’.
        So if it only works if I control my effort right, then I have no idea what the usecase is.

        Don’t get me wrong, I really love new technology like this. But how it can be a benefit I just don’t understand


        Race S
        Ambit3 Vertical

        C 2 2 Replies Last reply 4 Mar 2025, 08:38 Reply Quote 0
        • C Offline
          ChrisA Platinum Member @VoiGAS
          last edited by ChrisA 3 Apr 2025, 08:45 4 Mar 2025, 08:38

          @VoiGAS said in Suunto ZoneSense:

          If I would have done it in a race it would have been over for me, but Zonesense signals ‘Everything is ok’.

          I don’t doubt, your evaluation about failing in a race, but are you’re sure? Ever tried it in a race (or in racelike conditions - like tapering your load before, having enough sleep, etc.) ? That would be an interesting thing to know, if the majority of the racing people actually benefit from Zonesense in those races 🤔?

          V 1 Reply Last reply 4 Mar 2025, 21:43 Reply Quote 1
          • D Offline
            dankcushions @Mattg576
            last edited by dankcushions 3 Apr 2025, 10:39 4 Mar 2025, 10:38

            @Mattg576
            IANAHD (I Am Not A Heart Surgeon), but…

            these charts almost make more sense if you consider DDFA to be HRV (which I appreciate, it isn’t really), with the bottom of the chart being high HRV (relaxed/low intensity), and the top of the chart being low HRV (stressed/high intensity).

            because i would expect sharp HRV increases (the dips on the chart above) to occur when we’re moving from high effort to low effort, as the heart rate is increasing beat-to-beat. and then i would expect it to then sharply snap back to a lower HRV (the subsequent peaks in the chart) as we hit and maintain the high-effort heart rate.

            i’m theory-crafting here, but we can see the dips in the DDFA chart for the high effort parts. it fees a bit like the data is telling us the story, but the zones/colour-grading isn’t being applied in a useful way. at least not for this kind of activity. over longer activities without quick and short effort changes i guess it’s more useful, but it feels like with some tweaking it could understand both scenarios.

            1 Reply Last reply Reply Quote 1
            • 2 Offline
              2b2bff @VoiGAS
              last edited by 4 Mar 2025, 16:41

              @VoiGAS As I did a slightly hilly race for the first time last week, I know it is a totally different thing to a traditional race on a flat surface. Possibly I tried to be conservative with my resources I didn’t reach heart rates I usually reach when running on a flat course. As it was 6 round running up and down a smaller hill, each round about 10 minutes, I don’t think ZoneSense could have made much sense of it either. But I haven’t had a Suunto watch with me to prove it.

              Long story short, my point is: possibly trail running isn’t steady enough for ZoneSense to make sense…

              Suunto Race S
              Garmin Epix Pro

              1 Reply Last reply Reply Quote 0
              • G Offline
                Ghost
                last edited by 4 Mar 2025, 18:32

                In my view, consulting ZoneSense and attempting to correlate it with conventional metrics such as pace, heart rate, or power is counterproductive. ZoneSense is not meant to be compared with these isolated metrics but rather to serve as the foundation for effort-based training, dynamically adapting to real-time physiological and perceptual inputs. Today, I completed a 45-minute trail run, and the algorithm proved to be incredibly representative of my RPE. Introducing comparisons with traditional metrics only adds unnecessary complexity without providing meaningful insights, as those metrics measure specific physiological responses rather than the holistic effort ZoneSense captures. My objective for this session was to focus on aerobic and low anaerobic work, finishing with some VO2 max efforts, guided solely by RPE. The outcome was highly satisfying, reaffirming that ZoneSense effectively translates perceived exertion into a precise and adaptive training experience, making external validation unnecessary.

                6375a223-2ec1-41fa-88df-4f973ca0cb04-image.jpeg

                🔺 Vertical Titanium Solar

                V B 2 Replies Last reply 4 Mar 2025, 21:48 Reply Quote 4
                • V Offline
                  VoiGAS Silver Members @ChrisA
                  last edited by VoiGAS 3 Apr 2025, 21:43 4 Mar 2025, 21:43

                  @ChrisA Yes, happened to me once during a half marathon. About 15 minutes running too fast after the start were enough. The rest of the race was a real pain and the result was far from my expectations.
                  In my experience you don’t get back what you loose running with to high effort. At least for me it is that way


                  Race S
                  Ambit3 Vertical

                  1 Reply Last reply Reply Quote 1
                  • V Offline
                    VoiGAS Silver Members @Ghost
                    last edited by VoiGAS 3 Apr 2025, 21:49 4 Mar 2025, 21:48

                    @Ghost Yes, this seems to be the usecase where it works (best).
                    But if you increase your intensity in a controlled manor already, why would you need Zonesense? I have no doubt that it works, I just have no idea when it could be useful
                    Also I would guess Heartrate would give you a similar result


                    Race S
                    Ambit3 Vertical

                    G B 2 Replies Last reply 4 Mar 2025, 22:39 Reply Quote 0
                    • G Offline
                      Ghost @VoiGAS
                      last edited by 4 Mar 2025, 22:39

                      @VoiGAS HR is just HR, while ZoneSense provides results based on many more factors. @Brad_Olwin has already explained this to you multiple times, so I’m not sure you’ll truly grasp its value. That said, if ZoneSense doesn’t resonate with you, you can still train as usual. In the end, what matters most is the enjoyment of your passion for exercise, sport and nature.

                      For me, ZoneSense is essentially a measure of accuracy for my RPE. I enjoy training with it because factors like poor sleep, environmental changes, or hydration levels can influence my effort. Sometimes, I plan for an aerobic session but unknowingly end up in anaerobic zones. It also works seamlessly across activities like cycling, running, and jump rope, focusing solely on my real-time fatigue rather than the specific sport. I find this algorithm fascinating, but I completely understand that it’s not for everyone.

                      🔺 Vertical Titanium Solar

                      1 Reply Last reply Reply Quote 0
                      • B Offline
                        Brad_Olwin Moderator @Ghost
                        last edited by 4 Mar 2025, 23:20

                        @Ghost said in Suunto ZoneSense:

                        In my view, consulting ZoneSense and attempting to correlate it with conventional metrics such as pace, heart rate, or power is counterproductive. The outcome was highly satisfying, reaffirming that ZoneSense effectively translates perceived exertion into a precise and adaptive training experience, making external validation unnecessary.

                        Well stated!

                        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 1
                        • B Offline
                          Brad_Olwin Moderator @VoiGAS
                          last edited by 4 Mar 2025, 23:22

                          @VoiGAS said in Suunto ZoneSense:

                          @Ghost Yes, this seems to be the usecase where it works (best).
                          But if you increase your intensity in a controlled manor already, why would you need Zonesense? I have no doubt that it works, I just have no idea when it could be useful
                          Also I would guess Heartrate would give you a similar result

                          HR will not give you a similar result, this is the point! ZS takes into account fatigue, or rest and anything else including stress that is affecting you. HR is far less reliable.

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

                          V 1 Reply Last reply 5 Mar 2025, 06:22 Reply Quote 1
                          • V Offline
                            VoiGAS Silver Members @Brad_Olwin
                            last edited by 5 Mar 2025, 06:22

                            @Brad_Olwin @Ghost : You are both right, you stated many times what it IS and I got it. What I don’t get is how it can be USED.
                            Sorry for not making myself clear, but maybe you have some examples how it can be helpful. Is it in training or race or both? Do you use it afterwards to verify your RPE or real time. If real time - what do you check? Just keeping it green?

                            That are the things that I - and it looks like I am not alone - struggle with


                            Race S
                            Ambit3 Vertical

                            B B 2 Replies Last reply 5 Mar 2025, 08:56 Reply Quote 1
                            • B Offline
                              BRogers80 Bronze Member @VoiGAS
                              last edited by 5 Mar 2025, 08:56

                              @VoiGAS
                              I would like to see some kind of FuesdZone feature that sets the Zonesense data in relation to the current performance. It would be great to get some sort of prediction of what zone in the Zonesense would get in 5 minutes (or some other time period) if you kept the current power.
                              The whole thing should be adaptive and adjust to the data.
                              So you could adjust your performance in advance.

                              This would help me, for example, to be able to counteract during the run if my effort is too low or too high.

                              1 Reply Last reply Reply Quote 2
                              • B Offline
                                Brad_Olwin Moderator @VoiGAS
                                last edited by Brad_Olwin 6 days ago 5 Mar 2025, 14:01

                                @VoiGAS said in Suunto ZoneSense:

                                @Brad_Olwin @Ghost : You are both right, you stated many times what it IS and I got it. What I don’t get is how it can be USED.
                                Sorry for not making myself clear, but maybe you have some examples how it can be helpful. Is it in training or race or both? Do you use it afterwards to verify your RPE or real time. If real time - what do you check? Just keeping it green?

                                That are the things that I - and it looks like I am not alone - struggle with

                                Here are my uses and not uses in training/racing

                                1. Running Intervals 3min all out uphill (ZS not good for these)
                                2. Tempo Intervals 10 to 30 min. (ZS yellow to red)
                                3. Steady State Intervals 20 to 60 min (ZS low Yellow)

                                Endurance Runs: I keep as much in green as possible but am ok with low yellow. Going up hills I often go too hard, when I see ZS in mid yellow (happens often early in long runs 3h to 8h) switch to power hike.

                                Racing: Easy to go out too hard. Most of my races are 50k to 100 miles so imperative to keep in green especially going up hills… Later in the race if feeling good I can relax on this a bit. In races, the adrenaline and anticipation will have my HR much higher than it should be so ZS is much more helpful in gauging real effort.

                                I examine afterwards to see if ZS matches my RPE, this helps me to refine RPE especially when racing. Am I really as tired as I feel? Or am I going too hard to early?

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

                                V C 2 Replies Last reply 5 Mar 2025, 14:32 Reply Quote 10
                                • V Offline
                                  VoiGAS Silver Members @Brad_Olwin
                                  last edited by 5 Mar 2025, 14:32

                                  @Brad_Olwin Thats what I was looking for - thank you!


                                  Race S
                                  Ambit3 Vertical

                                  1 Reply Last reply Reply Quote 0
                                  • C Offline
                                    ChrisA Platinum Member @Brad_Olwin
                                    last edited by 5 Mar 2025, 16:49

                                    @Brad_Olwin very interesting, thanks - especially that the anticipation would influence HR and how Zonesense is helpful here!

                                    B 1 Reply Last reply 5 Mar 2025, 17:05 Reply Quote 0
                                    • B Offline
                                      Brad_Olwin Moderator @ChrisA
                                      last edited by 5 Mar 2025, 17:05

                                      @ChrisA Caffeine influences HR as does stress (work, family) so having fixed HR zones never made much sense. I figured this out over many years running ultras, I run how I feel and on long runs and races will have to put forth more effort than I want to. Pretty sure this is similar to how Courtney Dewaulter trains.

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

                                      C 1 Reply Last reply 5 Mar 2025, 18:53 Reply Quote 2
                                      • P Offline
                                        panadero
                                        last edited by 5 Mar 2025, 17:18

                                        Hi All!!

                                        I’m new to the forum but have been using Suunto for years (Traverse, Spartan and nor Race).

                                        Today I unwrapped a brand new Polar H10 and started a nice running session:

                                        Today there was a 2x5x100m Uphill series on the menu 😜

                                        Below there are two plots: HR vs Pace Plot and DDFAindex vs Pace.
                                        As you can see, the ZoneSense output doesn´t make any sense.

                                        I’ll have to test more the H10 in the future but, as far as I’m aware, it is fully compatible with Suunto’s new feature.
                                        So far, the ZoneSense has been working “fine” for me when using Suunto’s HR band. Even when doing Fartleks.

                                        Cheers!

                                        IMG-0693.png

                                        IMG-0692.png

                                        B 1 Reply Last reply 5 Mar 2025, 19:28 Reply Quote 0
                                        • C Offline
                                          ChrisA Platinum Member @Brad_Olwin
                                          last edited by ChrisA 5 days ago 5 Mar 2025, 18:53

                                          @Brad_Olwin That absolutely makes sense! And you’re right: When one thinks about it, there are quite a lot parameters that would influence your HR, making fixed Zones really questionable!

                                          1 Reply Last reply Reply Quote 1
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