@Brad_Olwin said in Subject: Feedback on Zone Sense accuracy: Short intervals and Zone 2 threshold shifts:
I do not know what HR belt you are using.
I use Suunto HR belt, and it is reasonably new, perhaps 4-5 months old, and I don’t use it that often. It was the same with Polar H10 before.
If I have a truly easy run. ZS remains green. But usually those are Z1 jogs with my dog where we do a lot of stops. But if I am trail running and putting some effort, my ZS graphs are always messed up like in the example above. I think it confuses the muscular stress with the aerobic stress. Aerobically I am well developed and my HR stays in Z1 and Z2 most of the time with occasional Z3 and Z4 and almost never Z5, but according to ZS it is red a large percentage of the time. I guess I am an outlier and ZS simply doesn’t work for me.
