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Harris Benedict Formula Question

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Old 07-19-2005, 09:04 AM   #1
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mesa_boogie HB User
Harris Benedict Formula Question

When applying the Harris Benedict Formula to my BMR, does this formula attempt to add to my BMR based on working out?

For example.

If my BMR is 2000, and I don't do much during the day so I multiply that by 1.2 and get 2400. Then I do 30 mins of cardio at the gym and burn 400 calories, do I add that 400 to 2400 to get 2800 calories for my bodies maintenance?

Or do I ignore the calories burned at the gym and simply use a higher multiplier like 1.55?

This may sound confusing. Basically I am trying to figure out if my body needs more calories because I exercise IN ADDITION to the calories burned during said exercise.

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Old 07-19-2005, 12:28 PM   #2
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Lenin HB UserLenin HB UserLenin HB UserLenin HB UserLenin HB UserLenin HB User
Re: Harris Benedict Formula Question

First off, I'm not overly fond of this methodology.

But I'd think the best way to use it is to start with the 2000 calories (this HUGE assumption is at the core of my quibbling with the methodology) and then assume the
30 minutes cardio is part of your lifestyle so that instead of using the 1.2 you might use a slightly higher activity factor, but NOT 1.55, if you do it every day....alternatively add the 400 to the 2000 BMR. Don't do both!

Believe me, 30 minutes of cardio IS NOT usually 400 consumed calories, sorry to say!

Do you really think that if you were in a coma you would consume 2000 calories a day?
I think that might be a tad high!

Last edited by Lenin; 07-19-2005 at 12:29 PM.

Old 07-19-2005, 01:20 PM   #3
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Re: Harris Benedict Formula Question


I use the Harris Benedict Equation to calculate basic caloric needs every day in my work. To find out how many calories you need for activity, you multiple your total from the base HBEq by an activity factor. The activity factors range from 1.2 for ambulatory to 1.6 for strenuous activity.

Hope this helps.
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Old 07-19-2005, 06:42 PM   #4
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mesa_boogie HB User
Re: Harris Benedict Formula Question

I think Lenin summed it up for me. I knoew how the formula worked, just didn't know if I needed to add calories burned exercising on top of the Harris Bendict formula. I am not fond of it either and haven't been using it.

So today I did 60 mins cardio burning 600 calories. Add that to my BMR of 2000 and get 2600, that's my maintenance lvl right? So if I were trying to lose weight I would eat maybe 1800-2000 calories right?


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