Hi all.
Newcomer to Garmin here so apologies if this is the wrong section for this post. I've had my Forerunner 235 for 1 month now and I love it! Being a personal trainer I've used lots of different devices and calculations to work out calories burned.
My question is basically this:
How does the Activity class in connect alter the calories burned during a day/workout? I know it uses firstbeat but im confused by all the figures.
Firstly, Garmin states my resting calories (BMR) are 2033 kcal. This is incorrect. It is 1733 kcal (harris benidict). BMR being the energy my body will use if i stay in bed all day without doing anything. Where does the extra 300 kcal come from? Does it actually mean TDEE at Sedentary level (no exercise)?
Going back to the original question. I bought the forerunner in order to tract my activity/calories. I am also a keen runner (nothing special) that runs 3 5km's and 1 10km a week so its the perfect watch for me. I also do weights 4 times a week. This would put me at Activity class 7 or higher.
Ive played around with the setting over the last month and this is what it says based on a normal day with a 5km run:
Activity class 0: 20000 steps / 2500 kcal
Activity class 7: 20000 steps / 2900 kcal
To conclude: As a test, I've done the same thing both days but my calories burned are completely different. The calories burned during a run and heart rates during the day are all simular. Garmin is still saying my resting calories are 2033 kcal. I have done this test a few times and still the same. I understant that the accuracy is never going to be spot on but 400kcal is insane. Its a bigger difference ive i test my 10kms
How is the Activity class effecting my readings?
what is my forerunner actually reading? just steps and logged activities?
I hope someone can shed some light?