Not a Garmin fan boy. Actually was very sceptical and main reason to buy a garmin watch was easy intervals.icu sync but here is a graph of my last 3 months of training (3x3weeks blocks with one week reco@1/2 of load) and you can clearly see how well it shows my hrv trends overlapping my training load. Just another argument for looking at hrv mostly from a weekly/monthly perspective at least.
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I’ve looked at my connect profile and can’t find these HRV graphs - is it on the web or in the app? Thanks!
this one is from the web (training status tab), you can find them on app but they are not together, hrv is under hrv tab and load is under training status tab
I see, it’s hidden under the reports. Thanks! 
I just started out with the Kubios App. Do you now how their Readiness Score is calculated or which parameters it is based on? Is the mood score included?
Also, I hav not found any instructions for the two parameters in the 5 level subjective mood score. Is stress based on physical (sickness, injury), mental, social, life stressors? If I choose low stress and high readiness, does that imply that I feel ready to train, train as usual, train high intensity, or to train more intense than my baseline level, ie what I usually do?
I don’t, and that’s the reason I’m not using it…
I only use HRV rmssd, HR rest and the Baevsky Stress index.
All subjective scoring is done in Intervals Wellness.
Training intensity guidelines are based on:
- HRV and rHR charts on the fitness page (those are using the HRV4Training principle)
- ImReady4 app (based on iThlete Training Guide)
- Always prioritize your own subjective feelings if they don’t match the above.
For Baevsky Stress index there is a scaling available which might help you in your scoring.
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Hi,
how could I start to record HRV data using edge 840 computer? On the device in System > Data Recording I have enabled “Log HRV”
Then created a graph in intervals.icu but the graph is empty:
I will add F7pro family in a coming update
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The hrv that Garmin records is not going to be seen in that graph, that graph is useful if you do HRV measurements in the morning and then upload it to Dropbox so that it synchronises with intervals. In any case, the HRV measurement during effort is not really important for the analysis as it will always fall to low values due to sympathetic activation. It would be more interesting to measure it before exercise and 15-30 minutes after to see the recovery.
@Luisma_Gallego_Soy_P Do artefacts adversely affect the RR and the DFA/a1 calculation in the same way, or is one more affected than the other?
Thanks
DFA is more sensitive to artifacts than Respiration Rate estimation. Moreover, any effect of artifacts persists for more time in DFA than in RR
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Many thanks.
Interesting approach to confirm readiness during Warm-up:
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See the screenshot from a google search
Someone on this thread sent DFA a1 files to Bruce Rogers to analyze on Kubios. Who did this? 
Is using Kubios to analyze this data very complicated ?
Used HRV Logger last night with a Garmin Dual HRM. Fascinating results and basically what I’d already imagined by AeT to be based on perceived exertion.
I want to try again but with Fatmaxxer and my Polar H9. But how do I analyze the data I collect?
Kubios Pro analysis is considered the Gold Standard for this but the software suite is expensive.
The easiest way to get dfa-a1, is with a Garmin IQ compatible device and the AlphaHRV IQ field which imports flawlessly in Intervals. You can use different chest straps ANT+ and/or BLE. The ones with best results are Garmin Dual and Polar H10, but there certainly are others that do just as good. This method is limited in computing power but still returns good/very good results compared to Kubios. In fact, you don’t need anything to analyse the data if you use aan app that gives you an a1 value. The difficulty is in calculating a1 correctly, because it is very prone to artefacts. Filtering out the artefacts in a good/correct way is what the app needs to be extremely good at.
If you don’t have a compatible Garmin device, you can use:
- Fatmaxxer: runs on Android phone but only with Polar H9 or H10. Returns a csv with the results and was tested to comply very well with Kubios. I used this before the Garmin AlphaHRV IQ was available. It’s a bit of a hassle to get the csv from your phone and graph it in a spreadsheet. If you want to try it out, download the apk from github and install manually, don’t get it from the Google app store
- HRV logger: Good results as far as I have seen, never used it myself. If I recall correctly, only iOS and Polar chest strap.
- Fitness HRV: runs on a Windows PC and can connect a multitude of straps in ANT+ and/or BLE. I consider this one very useful for indoor workouts. It’s a bigger size dashboard (laptop screen in my case) with a multitude of metrics. It can also record full ECG trace from Polar straps.
I have been following this from the very beginning but development is a bit stalled the last several months. Reason is that the fixed thresholds for a1 have been shown not to work for everyone. In my case, the first threshold AeT is certainly working. See screenshots from one of my ‘Easy runs’ and an ‘Easy Indoor Ride’, done on MAF HR of 180 - age. When fresh, a1 constantly hoovers just above 0.7. When fatigued, it hoovers around and/or slightly lower. It also is in accordance with my breathing sensations. And the first couple of tests with Lactate seem to confirm even further. I need to work out a Lactate protocol for testing but haven’t done that yet because I bought the La meter just two weeks ago.
Fitness HRV: https://www.fitnesshrv.com/
Bruce Rogers: Muscle Oxygen Training: The DFA a1 App matrix
Fatmaxxer: GitHub - IanPeake/FatMaxxer: Android Project to find FatMax in real time with a Polar H10
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How you uploaded data from Fitness HRV Dfa-1 to intervals.icu with other metrics together? Or do you recorded with Garmin from fitnessHRV ?
For cycling I have a Garmin Edge 840 with AlphaHRV IQ field. That records everything together.
For running I have a Coros Pace 2 but I carry the Edge 840 in my backpocket to record a1 on a special profile that is setup as indoor cycling. After the run I merge both fit files with ‘gotoes’ to insert the a1/resprate.
I haven’t found a way to merge data from FatMaxxer or Fitness HRV. Fitness HRV is only used as a dashboard for indoor riding, I dual record with my Garmin.
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You will only spend money that goes to Google. The APK from github is free to install.
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Fixed thresholds do not exist with DFA, it has been known for a long time, we are working on a paper with a procedure to extract thresholds through hrv with a different system, the evidence we have is quite good and we have started to collect evidence in the lab.
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