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Suunto ZoneSense

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  • A Offline
    Adrian.S @The_77
    last edited by 30 days ago

    @The_77 Heart rate zones for cycling are usually 8-10 beats lower than for running, according to statistical studies of thousands of athletes.

    When training for a triathlon, people do separate zone tests for running and cycling.

    I regularly do running tests 1-2 times a year. The person who does this told me this, and I believe him because he does this professionally 🙂

    I have set my zones 8 points lower than for running, and this more or less corresponds to how I feel at the same HR, for example 142 while in Z1 running and 142 while cycling are different feelings.

    Suunto Vertical, Garmin Fenix 7 Sapphire Solar, Garmin Edge 840, Polar H10

    T 1 Reply Last reply 27 days ago Reply Quote 2
    • T Do not disturb
      thanasis Bronze Member @Adrian.S
      last edited by thanasis 5 Nov 2025, 12:59 27 days ago

      I still get some hard to justify measurements
      Eg today on a trail run , going uphill , HR exceeded 180bpm for over 2minutes and zonesense was still on the green part

      7fbe7ca0-3f7f-40ae-9daf-4b9a8a92f048-image.png

      T 1 Reply Last reply 27 days ago Reply Quote 2
      • T Offline
        timecode @thanasis
        last edited by 27 days ago

        @thanasis this happened to me just now. My HR was 176, Zonesense shows a huge drop. Not sure how to read that.

        98a5d84b-ad1f-44d5-8ef9-48598de3cecd-image.jpeg

        B 1 Reply Last reply 26 days ago Reply Quote 1
        • B Offline
          Brad_Olwin Moderator @timecode
          last edited by Brad_Olwin 5 Nov 2025, 20:19 26 days ago

          @timecode ZS needs minutes to adjust. What you saw is normal. Your HR dropped a lot before it rapidly elevated at the end of your graph. ZS appropriately dropped then started rising. You were not long enough at a high HR! This has been stated many, many times here.

          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 3
          • T Offline
            timecode
            last edited by 22 days ago

            This keeps happening when using Zonesense a lot. I am able to see data on my watch during an activity, but in the app the graph looks like this. HR strap is connected, HR data is there. Any idea why this is happening?

            581cd70f-d727-4c16-9e7b-04826af4e5e9-image.jpeg

            B S 2 Replies Last reply 22 days ago Reply Quote 1
            • B Offline
              Brad_Olwin Moderator @timecode
              last edited by 22 days ago

              @timecode Is this true for all exercises? Do you have old ones with a strap prior to ZS release? Those will show ZS as well.

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

              T 1 Reply Last reply 22 days ago Reply Quote 0
              • T Offline
                timecode @Brad_Olwin
                last edited by 22 days ago

                @Brad_Olwin it’s not every exercise, sometimes it’s like this - there’s a chunk missing at the end of the excercise or some drops:

                4f451a34-7d6d-49e8-9457-54f57a87f84f-image.jpeg

                Today I was checking Zonesense quite often on my watch during the excercise and I saw data. It’s just missing in the app.

                B B 2 Replies Last reply 22 days ago Reply Quote 0
                • B Offline
                  brechtvb @timecode
                  last edited by 22 days ago

                  @timecode sometimes I have the impression by opening the big graph or swapping the data in the display for other measurements, more data (complete) pops up, odd, and a bug in the end.

                  1 Reply Last reply Reply Quote 0
                  • S Offline
                    SamuelP Bronze Member @timecode
                    last edited by SamuelP 22 days ago

                    @timecode it happened me the first time a few weeks ago. I didnt wet the belt before my run. I guess the connection was good enough for HR but not the r-r data. After a while probably my sweat made the connection better or something?

                    Screenshot_20250516-072456.png Screenshot_20250516-071902.png

                    I T 2 Replies Last reply 22 days ago Reply Quote 2
                    • I Offline
                      isazi Moderator @SamuelP
                      last edited by 22 days ago

                      @SamuelP indeed, if the data is too noisy it is not used for ZoneSense, data needs to be quite clean to be used.

                      Watch: Suunto Vertical Ti

                      Blog: isazi's home

                      S 1 Reply Last reply 22 days ago Reply Quote 0
                      • T Offline
                        timecode @SamuelP
                        last edited by 22 days ago

                        @SamuelP good hint, thanks. I will try it again tomorrow and keep this in mind.

                        1 Reply Last reply Reply Quote 1
                        • S Offline
                          SamuelP Bronze Member @isazi
                          last edited by 22 days ago

                          @isazi would be nice if suunto app could tell the quality of the data(like runalyze), would help with all the confusion 😅

                          1 Reply Last reply Reply Quote 3
                          • B Offline
                            Brad_Olwin Moderator @timecode
                            last edited by 22 days ago

                            @timecode If the HR belt dries and/or you have a tech shirt and dry belt it can cause problems. I thoroughly wet my belt before I run and I typically sweat enough that the belt stays wet. If you stop and dry out it could also be an issue.

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

                            T 1 Reply Last reply 22 days ago Reply Quote 1
                            • T Offline
                              timecode @Brad_Olwin
                              last edited by 22 days ago

                              @Brad_Olwin thanks. I also always wet the belt and sweat a lot, like A LOT. But it of course can happen that it dries out - today was quite cold, so it’s possible. I’ll try again tomorrow.

                              B 1 Reply Last reply 22 days ago Reply Quote 0
                              • B Offline
                                Brad_Olwin Moderator @timecode
                                last edited by 22 days ago

                                @timecode said in Suunto ZoneSense:

                                @Brad_Olwin thanks. I also always wet the belt and sweat a lot, like A LOT. But it of course can happen that it dries out - today was quite cold, so it’s possible. I’ll try again tomorrow.

                                I rarely have loss of data from ZS but it has occurred. The last time this happened my belt battery was about done. I finally remembered to check it.

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

                                T 1 Reply Last reply 17 days ago Reply Quote 0
                                • T Offline
                                  timecode @Brad_Olwin
                                  last edited by 17 days ago

                                  @Brad_Olwin just fyi, today I ran again with the HR strap and as you can see time spent in each zone on the watch is different as in the app. There’s again a gap at the end. I am sure it’s not an issue with the strap, it’s wet, fairly new and a brand new battery.

                                  4cc365f7-7ece-49b2-9cf5-eab6f8b02d4f-image.jpeg

                                  c0a55216-38c3-49ab-b7f0-39ab615a8e02-image.jpeg

                                  B 1 Reply Last reply 17 days ago Reply Quote 1
                                  • B Offline
                                    Brad_Olwin Moderator @timecode
                                    last edited by 17 days ago

                                    @timecode the watch is real time and the app calculates from synced data. Those are very similar IMHO 30s ± for VO2M does not seem like much.
                                    Don’t know about the end, perhaps R-R data is noisy from strap drying or static from tech shirt, don’t know. I have not seen this in my experience.

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

                                    T 1 Reply Last reply 17 days ago Reply Quote 0
                                    • T Offline
                                      timecode @Brad_Olwin
                                      last edited by 17 days ago

                                      @Brad_Olwin ah ok, I thought data in watch == data in SA. Good to know, thanks. Will “investigate” further.

                                      1 Reply Last reply Reply Quote 0
                                      • S Offline
                                        Stefano M64 Silver Members
                                        last edited by 16 days ago

                                        The past week a made a short easy run (I’m not a runner) primarily to check if the VO2max estimation I got by walking (46.1-46.2) was similar to the one I would obtain by running. Since it resulted to be 45.5, the answer is yes, they are pretty close, ok.
                                        The part on which I would like to have an opinion from someone more expert on the argument is relative to the ZoneSense: I walked for 10 minutes with a cadence of 55/60 then increased to about 70, the HR increased from about 100, to 150-160. For most of the time DDFA index was in the aerobic green zone, with two period in the yellow zone, which started at about 150 bpm the first time and at 160 the second time. Previously, I got 3 estimations of the aerobic threshold (134-136-137) while training at the gymn. For my age (61) the usual formula gives an HRmax of 159 pbm, another one I found (213-0.65*age) gives 173 pbm, from which I should have the aerobic threshold at about 134, in line with the previous estimation. So, I was quite surprised to see the transition from ZS green to yellow zones at 150 pbm or even at 160 pbm. By following this forum, I learned that HR zones based on age are just a vague indication, however I’m bit scared to be pushed to training to hard, what I want is just to keep fit (but I like to experiment and understand). Any comment is welcome!

                                        Screenshot_20250522-095843.png

                                        Suunto Vector . Vector HR . Core . Race & Race S

                                        G E 2 Replies Last reply 16 days ago Reply Quote 0
                                        • G Offline
                                          GiPFELKiND Silver Members @Stefano M64
                                          last edited by 16 days ago

                                          @Stefano-M64 i never would use zone sense as training indication or as reason to train harder as you feel. Go to an medical doctor and make a lactat running Test. There you got your right and personal heart rate and Training zones. Good Option here is to do this with Spiroergometrie system.

                                          If it doesn't challenge you, it doesn't change you. #lifewithasthma #runwithasthma #nevergiveup #pushinglimits #adventurestartshere Suunto D9, 9 Baro, 9 Peak, Vertical Ti, Race , Race s Courtney, SA (Beta) Android🏃🏼🧗⛷️🚵

                                          S 1 Reply Last reply 15 days ago Reply Quote 1
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