HRV on Vertical

[kamarasm]

Hi Guys,

Honestly I’m not familiar with HRV, so I started to collect information about it.
Found a table about predicted values by ages and genders.
Based on that the - let’s say - normal range is between 35-100 ms.
My Vertical shows 20-26 ms values measured during my sleeps since firmware update.

My question is this normal or a measurement issue?

Thanks,
Marcell

[mikekoski490]

@kamarasm Hi. This is a good question, as I have the same question for the Race. I read the same as you on normal range (35 to 100), but my HRV is 14 - 17, which doesn’t show on any charts as ‘normal’.

My BP is 121 - 80 with a machine.

Not sure what to make of my Suunto HRV value.

[stromdiddily]

I also have a “low” HRV with pretty much every other market towards the top 1%. If you are otherwise cardiovascularly fit, I wouldn’t worry about it too much.

For me it’s a very useful indicator of colds coming on. Any significant drop in HRV and/or spike in overnight HR pretty much means I’ll be down and out within a day or two.

[seanvk]

@kamarasm I’ve seen the same change with the firmware update. Decreased HRV reporting by about 10.

[kamarasm]

Maybe Suunto use some different approach then others on the market, however I didn’t find hint on it in SV’s users guide or other documentation.
Would be interesting to compare to other brands as it looks like SV and SR behavior are the same.

[dombo]

@kamarasm it was mentioned somewhere here in forum, that suunto do average of full sleep. Maybe other implementations do only HRV of some part of sleep or it is the highest achieved HRV during sleep. That might explain that other devices measure higher hrv.

[smopi]

@dombo As far as I know, Polar only takes into account the first 4 hours of sleep.

[pilleus]

At first the absolute value is uninteresting, although it should of course be approximately comparable to other systems. As long as the upward or downward changes in HRV can be seen in the medium-term average, the value is useful and can be interpreted accordingly. For me it was 10 points less on the Vertical than on the Forerunner and Fenix. However, the intervals from one day to the next were identical.

[seanvk]

@pilleus I agree with you. I’m seeing the same deltas day to day when I only look at changes between my Fenix 7x and the Vertical

[babychai]

hi guys, this morning first time to see my HRV range. my range is from 37 to 48. how about you guys?
i understand this normal HRV range is different for everyone. i just curious about you guys normal range.
Thanks Suunto for many cool stuffs after the latest update and great improvement.

[Mff73]

@babychai
Hey, me too .
The range displayed on the watch is little offset than in the app (maybe it is range until midnight, and today’s HRV not yet taken into account? ) , but it is nice.

[babychai]

@Mff73
I think my watch and app are consider tally.
Normal range : App show 38 - 48. Watch show 37 - 48.
7-day avg : App show 48. Watch show 47.

I guess 1 point different is due to decimal roundup issue.

[Mff73]

@babychai said in HRV on Vertical:

I guess 1 point different is due to decimal roundup issue.

surely, not critisizing, just mentionning, in case…

[babychai]

@Mff73 yeah, i know. so i guess the difference is not because of timing issue like CTL & TSB but more like decimal issue haha

[Mads Hintz-Madsen]

@babychai and if you compare the values in Android and iOS versions of the Suunto App, you will also sometimes see a difference between the Android and iOS apps.

So it does indeed seem like there in general is some inconsistency in how rounding/truncation is handled between watch, Android Suunto App and iOS Suunto App.

[Frederick Rochette]

I love the way Suunto uses HRV data. The widget is very visual and easy to understand.
The only hitch is that the data is not exactly the same on the watch and the app.

[kamarasm]

If I understand it well, graph appears just after 14 days. As probably all of us updated watch immediately after the new firmware got out, graph should be available in the same time.
Based on it - with my low numbers - I’m in the normal range. I guess it is because it looks the trends.

But I still really curious on why and what means these unnormal low values.

[Mff73]

@kamarasm said in HRV on Vertical:

But I still really curious on why and what means these unnormal low values.

With just 14 days of history, my personal observation (without any scientific knowledge on it) is that my night average HRV is little lower after a day with training.

[babychai]

@Mff73 i feel the same too. my fever also got make HRV drop

[Mff73]

@babychai said in HRV on Vertical:

@Mff73 i feel the same too. my fever also got make HRV drop

question to experts : shouldn’t it be the opposite ? higher HRV in case of illness ?