How to Guide - ImReady4 app, for HRV guided training

The error means that the app can´t retrieve a HRV rmssd value from Intervals.icu wellness data.
You should first make sure that your device sends a HRV rmssd value from a morning or overnight measurement to intervals.


There are not data in RMSSD and SDNN. Any idea?

Where are you getting your HRV data from? From Garmin 945 overnight score?

Yes, my HRV data is from the overnight score
Is correct?

The ImReady4 app uses the beat-to-beat data from adevice/app to create a HRV score (using SDNN, rMSSD, etc.). I’m not sure what your Garmin sends, which @MedTechCD also posted about in response to your initial query.

Thanks @Gerald

My dear: My device send to intervals the HRrest in the morning. You ask me that

[image]

In a Garmin Forum say “Garmin does not measure or provide SDNN data and instead uses rMSSD to measure HRV.”
Its true?
from: I cant view SDNN data - Forerunner 965 - Running/Multisport - Garmin Forums

Hey guys, just got to this any idea why I’m getting access forbidden from intervals.icu?

Isn’t the z score just the z-distribution used in statistics? I’m a bit rusty but I think it’s similar to the student’s t-distribution. It’s just a way of detecting changes between two or several samples. Like election polls.

Z-score shows how far you’re off a ‘normal’ value as a multiple of Standard Deviations.
Both the normal value and the Standard Deviation are calculated from the same population.

Seems similar to t-distribution but the latter is better for low sample size.

https://www.statisticshowto.com/probability-and-statistics/hypothesis-testing/t-score-vs-z-score/

1 Like

Thanks for this output, it really saved my day.

I’m using FR945 and it doesn’t officially support HRV. Because of this, Garmin also doesn’t sync HRV from apple health to GC, but this Connect IQ app does work, it automatically populates to intervals.

Only downside is that it needs to create a fit file, so what you do you with those files. I don’t want them to sync to strava and possibly spam all the running clubs with this babble (some have thousands of members). I didn’t quickly find a way to exclude some activities from the Gamin ↔ strava sync. Do you just manually delete these fit files and corresponding activities in intervals/starva?

Garmin FR 945 isn’t supported by Garmin internally (They do support FR 945 LTE). It’s a bit stupid, but this is how Garmin is. There is the option to log HRV (during exercise) and this is then included in the fit file. You can analyse it with Runalyze for instance.

You can also use the alphaHRV Connect IQ data field to write those fields to the fit file. And you can similarly use HRV Analyse Connect IQ app to read rMSSR and sDNN and send them to intervals.

But you cannot sync that wellness data from Garmin Connect to intervals, because Garmin has decided to not support this watch. It won’t sync to GC from apple health for instance.

After this blackmail, am I going to surrender and buy a newer Garmin watch? No way. But I might buy one from one of the competitors.

2 Likes

That’s such an awesome tool. Easy to implement (on my version I found Files command worked instead of Archive, but other than that it was super easy) and the graphs are great. Apart from the “Keep Calm, Acute Fatigue” notice… I guess I’d better get an early night’s sleep then

1 Like

There is one way the tool could be improved:

In the python version at least, you could make a check to see if there is a valid advice, before you make a call to the intervals api. That would save some api calls maybe. Not sure how this is handled in matlab…

If there is no data to process:


Hi,

First time I’ve seen this.
Any ideas?

Tks

Have you tried closing the app and retrying? It’s tying to retrieve the load from yesterday for the chart below the training advice chart, which should be blank if you didn’t have any load from yesterday.
image

Hi Gerald, tks in advance.

I have tried to close the app but no effect. Still the same.
I did have an activity yesterday.