Data Field: Fat Burner

The Fat Burner is a simple datafield which fulfills a user request from Susun.

Connect IQ App Store Link: https://apps.garmin.com/en-US/apps/7...2-20971e02898b

This field calculates the fat calories burned depending on heart rate zone & calories:

Z1: 9kcal burned = 1 gram of fat burned
Z2: 80% fat
Z3: 50% fat
Z4: 20% fat
Z5: 0% fat

In the settings you can:

opt to see Fat Burner (=default) / Carbs Burner / Fat Burner and Carbs Burner (Advice : do to consume too much carbs per hour, the absolute maximum is 70g/hour)

During your run it looks like this:

On Garmin Connect you can afterwards consult how many fat and carbs you have burned (if you have indicated in the settings to record it):

how to activate the app on your watch?
(it might be slightly different on your watch, this is how to do it on a fr735xt: from watch face - click start - choose an activity profile (eg Run) - hit down button - activity settings - click start - data screens - click start - screen 1 - click down button - field 1 - click start - hit down until you're over connect iq - hit down until you' re over fat burner - click start )

Advice by Susun:
For the users that want more accuracy, better if you use Karvonen formula using Garmin profile settings.
Karvonen method is more precise because is related to VO2 max for the most of people so I recommend it.

Go to your user profile and then HR zones configuration, choose %HRR and put your HR-Rest and set the zones as this:

Z1: 50-65
Z2: 65-75
Z3: 75-85
Z4: 85-95
Z5: 95-100(HR Max)

gchris7 over 6 years ago

No.
It would be a totally different graph if you take in the total time versus timed slots, eg in the case of interval session or walk/run sessions the graph over total time wouldn't be so meaningful.
Don't you see this best the way it is now?
The advantage of the current presentation is that you can pick your own time slots and make the difference between the points.

Not sure how it will look with the graph over time then.

This is what i have in my mind:
The bellow stats are for a 55 minute run and the time slots are set to 1 minute just for demonstration purposes.
The advantage with this graph is that you can directly see at what point in your run you where burning the most or least fat/carbs. You can also overlay other graphs like pace, elevation, hear rate for even further analysis.
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peterdedecker over 6 years ago

ok, I'll add it to my "to do"

gchris7 over 6 years ago

That's great to hear! Thanks a lot!

yulius over 6 years ago

Go to your user profile and then HR zones configuration, choose %HRR and put your HR-Rest and set the zones as this:

Z1: 50-65
Z2: 65-75
Z3: 75-85
Z4: 85-95
Z5: 95-100(HR Max)

This is a little confusing because here you stated 5 heart rate zones but in the app settings, there are 6 (0 to 5). I thought I read that karvonen recommended 6 heart rate zones, starting from 40% at 10% increment.

But may I suggest that you make the heart rate zones completely custom instead? Because, according to this study (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3761910/), a few percent heart rate difference can make a HUGE difference in the fat burning percentage. You may have to do a little math to translate the information there into Fat oxidation VS % Max Heart rate. But here's what I got:

Overweight Male:
53% Max Heart Rate - 62.8% Fat Oxidation
57.5% Max Heart Rate - 53.9% Fat Oxidation
62% Max Heart Rate - 43.2% Fat Oxidation
66.5% Max Heart Rate - 32.3% Fat Oxidation
71% Max Heart Rate - 18% Fat Oxidation

peterdedecker over 6 years ago

It'll be likely be different for every individual, but you can customize it to your own likings:
- change your heart rate zones to the ones you define here above in your Garmin Connect Device Profile
- assign the percentages in the settings as you'd like them to be.

- decide whether you want interpolation on or not.

yulius over 6 years ago

It'll be likely be different for every individual, but you can customize it to your own likings:
- change your heart rate zones to the ones you define here above in your Garmin Connect Device Profile
- assign the percentages in the settings as you'd like them to be.

- decide whether you want interpolation on or not.

Ahhh, so that's how I should do it. I tried looking for the heart zone setting in garmin connect and couldn't find it, apparently, the setting is in the fenix 5x itself.

Btw, garmin only has setting for 5 zones. But the fat burner app gives option for 6 zones (0 to 5). Can you explain the extra zone? How can I use it? As in, how do I set the heart rate % range setting for the extra zone? And which zone is that? Zone 0 or zone 5?

peterdedecker over 6 years ago

zone 0 is from your resting heart rate till the bottom of your zone 1, your resting heart rate is normally auto detected I think but you can also set your resting hr on your watch in your user profile.

yulius over 6 years ago

zone 0 is from your resting heart rate till the bottom of your zone 1, your resting heart rate is normally auto detected I think but you can also set your resting hr on your watch in your user profile.

I see... thank you! Great app!

LeoPac72 over 6 years ago

hi Pete,
So I have a question regarding interpretation of the data.
On Sunday I did a 10K run and now analyzing the data of Carbs and Fat I see the following behaivor:

As you can see, it comes to point in which as my heart rate increases, I stopped burning fat and it shows a flat line where I put the pointer, and the carbs burned started to increase.
Does this means that my body was saving fat for the moment in which I finished up with the carbs?

Thanks and regards!
Leo

peterdedecker over 6 years ago

It means that you probably got in your last zone where you don't burn that much fat any more.
In the settings of the app you can specify the amount of fat burned for each zone.