Strength Training App - Calories seem to high

I am used the strength training app during a weightlifting session yesterday. For an hour of lifting weights it gave me nearly 500 calories. That seems high to me. Does anyone know what is going on underneath this app? Was it the same on previous Fenix models?

It all depends on what you were doing during that time frame. If you were doing some squats, deadlifts, boxjumps and/or cleans/overhead press I would say 500 calories burned over an hour is quite possible. What do you usually see for the routine you completed?

Rogers Lane

I've done two workouts so far

• with the Scosche rythm connected I had 275 calories for 40 minutes of strenght training - squats, curls, tricep extension, seated dumbell rows.
  
• On a seperate workout without the rythm connected I had 127 cal for 30 min of strength training - deadlifts and heavy curls
  

Chest strap is your best bet with Strength training. So many variables with strength training and muscle constriction taking place that I wouldn't and don't trust optical monitors or armband monitors for any strength training. But they work good in a pinch to give you a general idea. I think best test is for the arm monitor do a set of clean to overhead press and take a look at your HR. The Optical and Armbands tend to show a huge lag or drop in HR (you're breathless but the monitor somehow reads 78 BPM, yep, been there) due to muscle/bloodflow constriction within the areas which the HRM are located. For some reason a chest strap maintains best consistency throughout for strength training.

I'm basing this off of years of use of Garmin, Fitbits, and Apple Watches with HRM from Wahoo, Garmin, Scosche and Polar H7 and H10 (one currently using). The optical and armband HRM's to me can show calorie burns being off by 100-200 calories per session and sometimes worse. Which is very frustrating if trying to establish a baseline of calorie burn per workout. But it could be a software issue with the Garmin Fenix as far as an algorithm somewhere.

New to OHRM

I had and F3 that is used during my mixed/cardio+strength classes (they are sorta like a crossfit). So I have a rough idea or benchmark about my calories burn using F3+ HRMstrap. it was about 400-550 for 45 to 60min. I've tried a few classes with the F5x, and the calories are way down, 250-400 for the same class. During the class I left the HR data screen up and I noticed that very often my HR was 100 or less. So not true. I took numerous samples manually and found it to be 20+ bpm low.

I understand OHRM are not perfect, and many have issues with consistency and values. I'm ok with all that. I just need to know/learn what to expect out of this watch. if it read 20 bpm low, ok, I will adjust my activity to those baselines.

But my point in replying is that expected the strength classes to read more accurate and the more cardio classes to read worse. I figure more arm swing, more chance for movement of the watch, even though I had it pretty tight.

this thread seems to indicate that something in the nature of lifting and weight could be impacted the HR values (which of course feed into the calories)