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    WANNABESKINNYME   45,770
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Interesting article...


Monday, March 05, 2012

Please check out this article, do the math and let me know what you think. I did the math, I seem to be in the right ballpark but it isn't working like they say it should. Is it possible that I have messed up my body that badly? Is there a test for that? This article is noted on a blog that I follow. It is a spark person but I do not know who it is. Here is the link:

http://www.shape.com/weight-
loss/weight-loss-strategie
s/ask-diet-doctor-how-many
-calories-should-i-eat-lose-weight

copy and paste it. My number is 2537.325 to MAINTAIN my weight. I regularly eat between 1500-1700 calories per day and get 60 minutes of exercise 5 days a week of cardio and strength combined. I really want to hear your opinions......do you fit this model?
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  Member Comments About This Blog Post:

CTUPTON 3/17/2012 9:49AM

    My doctor told me to eat 500 cal. less than needed to maintain. That is supposed to be a 1 lb. per week weight loss (average of course). 50 lbs. in a year! Whoo ! Whoo!


And, he says to know the approx. cal. you need , put a zero after your present weight.

Mine is 250 , so I should need 2500 cal. per day to maintain. that seems to work out about right for me. As a person loses weight, they need fewer cal.

If I weighed 150, I guess I'd need about 1500 cal. per day to maintain.

This is very rough, but it does give a pretty good picture in my mind. Does that make sense? chris

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EGALITAIRE 3/6/2012 3:16PM

    Another confounder in this equation is muscle mass or body fat. Muscle burns more calories than fat, just sitting there. For a full year I tracked my caloric intake on Sparkpeople, I averaged under 19,000 calories per week input.

My BMR, based on height/weight/age, and not moving - this is just the base - if I move, I burn more - is 14,700 calories (about 2,100/day) per week and I was bike riding and burning an average of 6,000 calories every week. I was very diligent about tracking everything.

Based on these numbers, I was in calorie deficient of at least 1,700 per week - more really, because I am reasonably active in addition to the bike riding, but I didn't calculate those calories.

One pound equals 3,500 calories, so I should have been losing 1 pound every two weeks, or 25 pounds in a year.

After a year, I was 10 pounds lighter than when I started.

I was frustrated and demoralized - I had been working hard. A diabetic friend had gone on a diet that included no wheat or processed carbs some years earlier and I remembered him reporting he lost weight immediately.

I did some research and changed my eating habits. I eliminated grains and processed carbs - my weight started dropping immediately - I have now lost 30 pounds in 4 months, my muscles are more toned and seem to be bigger.

I have more physical energy and mental acuity. I think the BMR might provide a guideline, but I don't think it is the end all and be all. Experiment to see what works for you.

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BLVINBUTTERFLYS 3/6/2012 2:53PM

    It widens the range a bit, but not to bad.
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BLVINBUTTERFLYS 3/6/2012 2:52PM

    It widens the range a bit, but not to bad.
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BLUE42DOWN 3/6/2012 1:01AM

    That is the same math used by many of the online BMR calculators you will find. For me:

BMR = 655 + (4.35 x weight in pounds) + (4.7 x height in inches) - (4.7 x age in years)
BMR = 655 + (4.35 x 206.5) + (4.7 x 68) - (4.7 x 42)
BMR = 655 + 898.275 + 319.6 - 197.4
BMR = 1675.475

Light activity = Office work, ~1 hour of moderate exercise/activity during the day. Activity factor = 1.5

BMR * 1.5 = 1675.475 * 1.5 = 2513.2125

I've been bouncing between 1850 and 2000 daily, with a few days here and there over. My weekly loss per my trend chart is 1.6 pounds.

3500 calories per pound * 1.6 pounds = 5600 deficit weekly = 800 deficit daily

2513.2125 - 800 = 1713.2125

Seems to be right about in range for me.

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NOW, I will say this. I'm not subtracting my calories burned on top of that. In my mind the "Light Activity" accounts for most of that already. I've also worked it out in a roundabout way by using the Sedentary value (and I've seen that listed as 1.25 elsewhere rather than 1.4 which seems more likely). So:

BMR = 1675.475
BMR * 1.25 = 2094.34375
Calories burned per week = 3000 / 7 = 428.57143 daily
Maintain = 2094.34375 + 428.57143 = 2522.91518

Comparing that to BMR * 1.5 = 2513.2125, even that looks like it is in range.

For someone not burning as many or more calories, there might be more variance. Also, calorie burn can be counted differently. SparkPeople, for example, doesn't subtract the BMR burn that is occurring at all times. So when we record 1 hour of cardio, it includes the BMR for that hour. But your range already includes the BMR for that hour, so it doubles. (It's not a massive amount though. Take mine - 1675.475 and divide by 24 hours - that's only about 70 calories difference in an hour.)

Machines that don't prompt for our age and current weight might not be as accurate in calculating calories. Ones that track heart rate too might be a little more accurate - or less - depending on how long it takes to adjust from one range to the next if we speed up or slow down.

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IMREITE 3/6/2012 12:28AM

    I've seen that formula before. it is handy to give us a range so we know what to expect calorie wise. it sometimes seems like a lot, but losing 1 lb a week will involve 500 less per day. it is also neat to see how exercise affects it.

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6PICKETTS 3/5/2012 10:58PM

    Ok, I did it, and it said I needed 2837.25 to maintain, and around 1891.35 to lose weight. At first I thought it seemed high, but Actually that's probably correct for me. I'm 5'11" and weigh 241. It takes a lot of calories to get this big. :)

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