Sunday, July 02, 2006


On friday morning, I visited my registered dietician, Catherine Kruppa to have my BMR tested. The reason I wanted to do this as I've mentioned before (I think) is that I believe I am targeting too low a number for daily calories. Lo and behold, I was right. I was underestimating my BMR by ~800 calories. So here are the results:

BMR: 2780 calories/day
BMR x 1.2 daily activity factr: 3336 calories
Target daily deficit (per Catherine): 1000 calories/day
Target caloric intake(non-workout days): 2336/day
Target caloric intake(workout days): 2336 + calories burned during exercise

Now, here's the ugly little trick. On days that I work out, I still need to maintian only a 1000 calorie deficit. So, however many calories I burn working out, I must add that to my intake. So, the big question is how many calories am I burning. I know that all the calculators out there are just best guesses. Also, my Polar RS200sd gives me total calories burned. Some of these numbers are hard to believe, though. I guess given my weight, they may be true. For instance, according to Polar, my 28 minute, 1.75 mile jaunt on Thursday burned 389 calories. That's a lot to me. So, for Thursday, my target caloric intake would be ~2725. WOW!!! I can live with that. Especially since I would feel guilty before for eating more than 1700 or 1800 calories. No wonder I was always soooooooo hungry leading to gorging and binging on sweets.

I know this BMR thing and calorie counting is not an exact science. Still, it gives me something to shoot for. And I believe the estimates are pretty close. I guess the proof will be born out in the coming months. If anyone out there has experience with calculating calories burned during exercise, I'd be interested in hearing from you.


Emily said...

Awesome, Vic. Sounds like you're definitely on the right track! Keep me posted on your progress - you know I'm fascinated by this stuff. Good luck!

Humble Runner said...

Whatever you do, don't trust the new Garmin 205 for your "calories burned". The newest version has more varibles, but I simply can't beleive what they read. My last run (13.1 miles @ 10:33 pace) showed a whopping 4,387 calories burned. There is no way! I put the data into a couple other online calcualors and never saw more than 2,950. Even that number seems a bit high.

Cassie (TIGGS) said...

My Polar (same model as yours vic) appears to be nearly accurate. I burn about 100 calories every 10 minutes of running....