V02 Max Test and Max Fat HR Burn

So......


I recently had my VO2 Max score calculated. It was a rather easy process of running on a treadmill with a mask on. Your exhalation is captured by some sort of machine and is analyzed (Korr was the manufacturer).

Anyway, one of the many values I got back was Fat Max Burn. Here's the definition that was provided by the tester:

Fat max is the maximum amount of fat burned in grams per minute that we measured during your active metabolic rate test. That heart rate value is 142 BPM. Grams per min is 1.1g/min.

I've converted over to the 80/20 running plan. That plan has 80% of my mileage at a HR of 135-145 which also just happens to be my max fat burn rate. I've struggled to lose the last 10-15 lbs for years now. Moving to this plan melted that off to the point my trainer wants me to add muscle mass now.

I've done no research on this and had never heard of it until I took the test.