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Francesco's avatar

Ciao Marco,

have you had a chance to test Suunto's ZoneSense?

I am actively using since it was released for my running training, which is primarily "easy" and I wanted to share a thought with you to see what you think:

most of my runs are around what I had established as my LT1 at 145 bpm; ZoneSense usually reports my AeT slightly below or above that value. But if I do something a bit harder, such as a tempo or a trail run, where my average heart rate is higher (say 160 bpm) then also ZoneSense seems to adapt, keeping me in the green at higher heart rates and reporting higher AeT values (e.g. 154).

Since what it does is "try to spot a change in the cardiac response of an individual", would you think that this change is simply reported in relation to the given activity?

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Tim's avatar

Hi Marco, thanks you so much for the interesting write up. I hope this message still reaches you.

I've looked into using DFA in the past, but to be honest this was more because I found the technology interesting, not necessarily because it gave me information I could not obtain on an easier way ;)

Having said that, do you know of any use cases of measuring HRV ('regular' HRV, so not DFA) during exercise? It would seem easier to measure, less prone to error, than DFA. To be honest I don't know what value it would add or what question it would answer ;). However there seem to many tools around that offer the option of measuring it, for example it has been an option on Garmin watches for years, so I am wondering if I am missing something? ChatGPT had some ideas but I am much more interested in your option ;). To be clear, I am talking about measuring while exercising, with a Polar strap.

Thanks in advance for your time to read, thanks,

Tim

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