Suunto ZoneSense
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@mlakis read again the manual. It cannot be used for such short intervals.
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@Egika thanks for the explanation, this makes sense.
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Not tested yet but very interesting feature.
I have taken a look to older activites where I was using chest strap.
Despite suunto says it may not be very relevant on older activities, I’ve found that it pretty correlated to my HR zones, for trail running and running activities. IT seems that My HR zones for running are pretty well set.
What was more interesting to me is that for bike rides, zonesense seems clother to the feelings i had. much clother than what HR mesurement was suppose to tell. -
Ok, from what I understand there are certain scenarios where the ZoneSense does not work.
After a quick read, I understand that what ZoneSense does is that it can detect and represent the “real” kind of an effort (aerobic, anaerobic, VO2) especially when due to cumulative stress, the effort may be more taxing than what is represented by the heart rate.
But I think it’s overwhelming when exercising or even after training to sit and “study” the graphs for each situation and conclude if ZoneSense makes sense or not for it.
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@mlakis You do not have to study the graphs and see if they make sense. The manuscripts published in peer reviewed sports journals on DDFA have already done this with significant cohorts of individuals. Suunto did not invent this but collaborated to be the first to bring to a watch. If you are fixed on HR zones for training we know that HR is inadequate for ultramarathons and for very short intervals (1 min or less). The advantage of ZoneSense is real time effort. For example, when testing and training I did three ≥4300m peaks on successive days for trail runs. Obviously on the final day I was fatigued. ZoneSense showed that accurately in real time. When I go back and look at the information my Aerobic HR on the first day at 144 bpm had dropped to 122 bpm on the third day! Depending on what you are training for, this would allow you to immediately determine the same effort on day 1 and day 3 would affect training load differently with much more stress on day 3. If I want to keep my effort levels event and not raise them ZoneSense allows me to reduce my effort on day 3 so I do not train too hard.
This is revolutionary and for me eliminates the need to be checking HR on my efforts! During long training runs and races I can use ZoneSense to ensure I stay within the effort I should as I gain fatigue. When exercising all I have to do see the zone I am in. For example, I have a half marathon trail race coming up on Sunday, the shortest race I have ever attempted. I am going to use ZoneSense to see if I can maintain my entire effort in the low anaerobic zone the entire race.
Vector/T6c/Ambit 3 Peak/S5 Copper/S3/S7 Ti/S9 baro Ti/S9P Ti/S9PP Ti/Vertical Ti/Race Ti/RaceS/Ocean/Wing
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@Brad_Olwin, thanks for the analysis.
I mainly cycle in varying terrain where even “steady efforts” are not steady enough on the HR perspective.
I had a look on my previous trainings and the trend where the ZoneSense metric makes a deep when HR raises is very often.
I guess it does not work well with the way I train.
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I’m still not seeing ZoneSense in the Suunto phone app on any of my activities using a heart rate chest strap. I’m using version 2.38.0 (16480) on iOS (the latest beta version available through TestFlight). My heart rate monitor is a Wahoo TICKR. I’ve looked at activities recorded using my Spartan and others recorded with other devices and synced to the Suunto App.
When I look at the Analysis chart in the activity card, I don’t have the option to select ZoneSense as a chart variable.
Am I missing something? With activities recorded on non-Suunto devices and synced to the Suunto App, the activity card doesn’t show time in heart rate zones, because the zones are defined on the watch. But my impression was that ZoneSense was done in the phone app (or in the cloud), since it supposedly works for activities recorded with older Suunto watches too. Either way, I’m not seeing anything even for activities recorded on my Spartan.
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How long should I stay in above anaerobic threshold in order to get a post-workout anaerobic threshold estimate? On average.
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And this deep/“dive” on the metric is evident generally when the HR starts to ramp up, even in the examples given by Suunto:
Excuse me for the sketchy way I marked them, I am using my phone to do it.
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@Brad_Olwin thanks for the write-up and I appreciate your understanding of this as you are a scientist yourself.
I’m curious about this and listened to the video lectures by Suunto. Am I correct in understanding it this way that when I’m focused on base building in max 1-1.5 hr workouts, I can safely push within what Zonesense lays out for me as my Aerobic Zone (AeZ). So even though I may occasionally dig into my previous Z3, in this new paradigm (and how it’s co-related to lactic acid levels and actual stress), I am still effectively able to work on my base building without affecting my progress.
As an amateur, when it comes to the science here, I took as gospel the philosophy Steve House and Scott Johnston pitched and the strict emphasis to not touch Z3. I think some of my thoughts are just fragments of that old paradigm and the old tools that I’m trying to unlearn.
I’ve had one run on this so far and honestly I didn’t even look at the watch after the initial 5min of data from Zonesense, I just ran with my feeling of what felt like an appropriate effort and the results aligned with how I was feeling. So I’m definitely convinced here.
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@Brad_Olwin said in Suunto ZoneSense:
During long training runs and races I can use ZoneSense to ensure I stay within the effort
This is one problem I have with the implementation. Longer runs and efforts are when I ditch the HR belt in favor of either an optical arm band or the watch’s OHR. I’d imagine this is true for most endurance athletes, at least come race day, as having the chest strap on for multiple hours is chafe-city.
I’m quite intrigued by ZoneSense, but a little bummed that I’ll need to strap on the chest monitor to get the benefits. I understand why it’s necessary, though.
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@Brad_Olwin said in Suunto ZoneSense:
@mlakis You do not have to study the graphs and see if they make sense. The manuscripts published in peer reviewed sports journals on DDFA have already done this with significant cohorts of individuals. Suunto did not invent this but collaborated to be the first to bring to a watch. If you are fixed on HR zones for training we know that HR is inadequate for ultramarathons and for very short intervals (1 min or less). The advantage of ZoneSense is real time effort. For example, when testing and training I did three ≥4300m peaks on successive days for trail runs. Obviously on the final day I was fatigued. ZoneSense showed that accurately in real time. When I go back and look at the information my Aerobic HR on the first day at 144 bpm had dropped to 122 bpm on the third day! Depending on what you are training for, this would allow you to immediately determine the same effort on day 1 and day 3 would affect training load differently with much more stress on day 3. If I want to keep my effort levels event and not raise them ZoneSense allows me to reduce my effort on day 3 so I do not train too hard.
This is revolutionary and for me eliminates the need to be checking HR on my efforts! During long training runs and races I can use ZoneSense to ensure I stay within the effort I should as I gain fatigue. When exercising all I have to do see the zone I am in. For example, I have a half marathon trail race coming up on Sunday, the shortest race I have ever attempted. I am going to use ZoneSense to see if I can maintain my entire effort in the low anaerobic zone the entire race.
Interesting, thanks !
I was wondering how to use this information on a long trail for example. Staying in the green zone could ensure that you finish the trail without exhausting your resources too early. -
Well, HR by it’s nature is a metric that in respect to the effort you are making has a time delay/lag.
That’s why in cycling power meters are very useful. They show you instantly the power you are outputting and you can level your effort without the danger of either overcooking or undercooking.
Now Suunto is giving us a metric where it has significant time lag in addition to the natural HR time lag.
I can’t imagine looking to the ZoneSense to gauge my effort since it’s evident that when you are starting to ramp up, the metric goes down and totally misleads you.
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@mlakis I dont think zonesense is made for instant action like some TRI bikers / Roadies need (?).
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Hmm, for me real time ZoneSense is not working as good as expected, maybe it needs more time. yesterday on bike, easy ride, 15min into activity with HR and power in Z1 and steady riding I got vo2max measurements ad 117bpm (my max is above 190), and a lot of time in anaerobic. I was aiming for a Z2/aerobic ride, but I was frustrated that I was in yellow/red during warmup, so I went for some efforts
just because data was already bad did someone managed to have 2h ride/run only in green? -
@Likarnik Same for me the first time i went for a light walk. Under 100 bpm and it showed yellow. Second time i went for a walk it seemed to have callibrated and shower only green values just as expected
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@Likarnik I believe with metrics like this it’s better to do at least a few runs without looking at it in a real time. Gather data and do a post workout analysis to find out what is going on and if it has some value for you. I think that the worst use case is to change your training because of a data that you don’t know much about (as it is a new concept at least for me). That is definitely a path for an unproductive training. I will give it a chance by doing post workouts analysis and see how it correlates with my perceived exertion, how it behaves under different circumstances etc. Then it makes sense to either use it or discard it:)
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@Zdeněk-Hruška I totally agree with you, but I probably always train unproductive
When I feel lazy I run/bike slow, I choose flat route and vice versa when I am hyped or maybe angry/sad. I still manage to get some good results and finish long races. I wonder how good can I be if I start to train smarter 
maybe with new suunto coach ai recommended workouts… let’s see -
@Likarnik I think that the best way is to “hire” a coach at least for some time. But I understand it’s expensive and not everyone has this opportunity. In my opinion it’s important to educate yourself as much as you can so you know what you are doing and why. Every training session should have a goal you want to achieve (eg. I want to run slow before the next hard session,…). Always listen to your body and use the metrics like HR and maybe even ZoneSense as an additional tool according to which you can calibrate your effort.
I believe that ZoneSense could be another piece of the puzzle but at least for now I don’t know if it’s going to be the ultimate metric. I need to test it on myself to see how it really works and also listen to another people using it (plus I hope there will be more studies on that). I am going to train as before and test how useful it really is before I start to rely on it more
