HR readings during weight lifting somehow disappointing with Charge 6

[McLovinHawaii]

Hey together,

i'm finding, that the HR readings are not well for weight lifting sessions.

Here an exaple from my todays high intensity low volume session.

I did a warmup set for chest, then 3 hard working sets for chest.

Then one warmup set for bicep, then 3 hard working sets for bicep.

After that for my weak point an additional hard working set.

After that 2 really challenging sets for ABS.

Helio Strap on right bicep:

And here Charge 6 sitting firmly on my left wrist:

Is it only for me that bad?

How are the reading for for lifting sessions for you guys?

[HorareyFitbit]

Hi @McLovinHawaii, it’s nice to see you around the Community Forums!

Thanks for the screenshots so I can understand in a better way your case.

We recommend not to compare devices since each of them works differently. 

Let me tell you that Fitbit works with PurePulse technology which are green LEDs that read through your skin capillars and measures the beats per minute,

I can also recommend you this following article that can help you with your situation. How do I track heart rate with my Fitbit device.

[Triletics]

@McLovinHawaii no and in general, any activity that involves wrist motion will have an impact on the readings. You will see similar issues in cycling, calisthenics and many others and this isn't Fitbit only but also other watches. It's a limitation of technology. If HR is important to you during those activities then best is to look for a watch that connects to external HR monitors (you already have the armband, most sports watches can connect to it over ANT and/or BT and use its readings). Doesn't matter whether it's PurePulse or any other buzzword - wrist is worst place to wear the HR monitor when it comes to such activities and using external HR monitor is only way to fix the problem.