Can someone explain this to me? I know what VO2max is. I know the only way to get an accurate testing is in a lab. But I don't understand how it affects calories burned. I was under the impression that the more fit you are, the higher your VO2max, the fewer calories you burn compared to someone with a lower VO2max.
I have previously done some at-home VO2 testing and used the number I got for the Rockport walking test www.brianmac.co.uk/rockport.htm
. I used that number for over a year, but when I recently did Insanity, my calorie burns were fairly low. So I did some more research and found another way to approximate VO2max - using a 5K race time www.brianmac.co.uk/vo2race.htm
. That number is a lot lower than the one from the walking test, and I suspect it is more accurate (there's no way my big butt, barely runs 3 miles self has a VO2max of 44!). So, I changed my HRM setting to reflect the (what I feel is) more accurate number of 34 (closer to 35 though).
I did my first workout today since changing that setting (all other settings remained the same) and I burned 125 fewer calories today than I did doing the same workout just one month ago. That's a pretty big difference. What good is a heart rate monitor (Polar F6) if I can't even get close to what I'm burning? I know HRMs are just an estimate but 100+ calories for a 30 minute workout is a huge difference.
I am sure I had good contact with my chest strap (which I replaced a few months ago, so I know it's not the battery in the strap). I kept an eye on my HRM the whole time to make sure it was getting a reading. I know it's really not that big of a deal but I depend on having a fairly close approximation of what I'm burning so I can monitor my caloric deficit. I'm to the point where it's very difficult to lose so that is important to me. I don't know what's more accurate - the lower number or the higher number or should I split the difference? I do know that when I do cardio, even Insanity or running, I don't breathe heavy. I can fairly easily talk, and my breathing is steady, unless it's a super high intensity interval. My legs tend to fatigue before anything else.
Should I get a new heart rate monitor? Not worry about it at all?
Should I do the fitness test for the HRM? It's over 2 years old and I've never done it but it's set up to determine my max heart rate based on whatever I'm doing. My resting heart rate is also accurate in the settings - I've calculated that multiple times upon waking. Actually, I'm not sure the F6 comes with a fitness test, other than the OwnZone thing (which usually calculats in the first 3-5 minutes of each workout to give me a target HR range) - I know the new HRMs do though.
It's frustrating and now I just need to know how VO2max and calories are related, for my own sanity
Edited by: JOLINAR at: 6/3/2011 (22:08)