Potential bug: aerobic decoupling creates HR spikes

[Steven Limmer]

I turned on Aerobic Decoupling today in SuuntoPlus before my recovery run, and went on the run. When the test started, my HR spiked all the way up to mid-Z4. I stopped running, thinking it was an anomoly, then ran on. Tested ended 10 mins later, same thing happened.

I can repeat this tomorrow to test if it is a true issue?

[A Former User]

@Steven-Limmer odd enough! I use it almost daily w/o issues

[Steven Limmer]

@robis I’ll test it again tomorrow. It was weird, but both at start and end, high spikes

[false]

was it with an optical sensor?

[Steven Limmer]

@false yes, used the onboard WHR

Tested again today, had the opposite problem - it dropped low

[Brad_Olwin]

@Steven-Limmer best to use a belt. OHR on any watch is not all that accurate.