HR comparison

Suunto9 Peak PRO wrist HR

Hammerhead karoo2 with Polar H10

Huge difference between wrist and chest strap.

suzzlo

@Felttie tracking HR from a watch when riding is not a good idea. All bike vibrations, and wrist position make it really hard to get good measures

BR

@suzzlo How about running? Wrist is moving even more all the time during running effort, is it more reliable to make comparison testing?

altcmd

@Felttie I am surprised @suzzlo says HR is not reliable when riding and presume he means OHR. Isn’t the hand more stationary than running? I don’t really get this rationale.

suuntastic

Yesterday I forgot my smart belt and was out for a long hiking / Trailrunning day. I had no other choice than OHR on my S9P (non-pro). Wow, it was incredible good! Felt like belt… very good. There must be some improvements in the past via update…

isazi

@altcmd rationale is: you grip the handlebars, blood flow is reduced.

altcmd

@isazi Sure, but is there scientific evidence on this?

suzzlo

@Felttie @altcmd I’m talking about OHR. if you fit the watch correctly (tight and 2 fingers above the wrist) usually there is no problem when running, but (at least in my case) the wrist position handling the handlebar and bike vibrations make bad readings.

This is my experience and also others (here in this forum and and also in the Spanish telegram Suunto community)

BR

altcmd

@suzzlo hmm! Might be more Suunto than in general as I don’t see any difference in OHR reading from the Polar Verity irrespective of whether I wear it on my bicep or forearm. I don’t know if a scientific evidence on this yet and from what people say here, might just be Suunto and how Suunto does it.

EzioAuditore

@suzzlo There might be some ‘fine-tuning’ needed in the algos as well. I too can confirm that the OHR on the SV while biking (even easy commute without much grip or bouncing gives too low HR, while AW8 is spot on). While running if you ignore the fact that in the beginning of a run it always locks to the cadence (always been the case since Spartan) it usually is much closer to AW or strap (then again I never run without a strap but did a couple of easy runs to test).