Training & Nutrition - BMR that uses RHR?

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TwoTyred
04-11-07, 12:45 PM
I'm betting if i were to quit binging on 11+ cookies
at a time, i'd be a lot more efficient at losing fat, but,
in the meantime, let try and estimate my Basil Metabolic
Rate, or whatever it's called these days, to calculate
how many calories i need just to function, now, really,
for accuracy, i've read that it's best to factor in the
Resting Heart Rate, but i've not been able to find
an online calc. that uses it, anyone have a link to one??
thanks very much!!
DannoXYZ
04-11-07, 01:40 PM
Caculate how many muscle-cells you have, and fat-cells and bone cells and other types of tissue. Figure out how much oxygen they need. Figure out the oxygen-exchange ratio for your particular lungs, find lungs surface-area, find total oxygen absorbed per breath. Determine how much total blood-volume you have and the carrying-capacity of your particular blood. Measure stroke-volume of each pump of your heart. Divide out total volume of blood/oxygen needed by all your living tissues by your teh stroke-volume and you've got RHR...
Cutting out 11+ cookies in one sitting is a lot easier... eat more veggies, ride more.
Carbonfiberboy
04-11-07, 03:58 PM
This all reminds me of my favorite Lance story: Someone once asked him how he kept track of his exact caloric intake for each day. Lance gave his questioner a disgusted look and said, "Well, it's written on the side of the box!"
But I'll get right on it, Danno. I always wanted to know how to figure that.
TwoTyred
04-11-07, 06:04 PM
Naw, come on doooodes, i'm getting anyware frum
1650-2k for BMR and i thought i'd be better off if
i had it pretty much right since, supposidly, i should
only run a 500 calorie deficit a day, correct?
So, shirley, there should be a calc. that will
factor BMR, without going through the trouble
of massspectrohyper******imisiming the collective
organic entity in question.... at least that's what
i thought.. :)
DannoXYZ
04-11-07, 06:14 PM
The problem with all the online calculators and other ways of calculating BMR is that they are just estimates based upon averages. Due to the sampling size, these calculators will never be able to determining your particular BMR because no two people are the same. The calculators will tell you the "average" for a large group of people that are similar to you.
The only accurate way of determining your BMR is to record your weight and food-intake over time. Go to http://www.fitday.com and track all your meals for a couple of weeks. Also record your weight daily. Use a 2-5 day moving-average of your weight and compare it to your average food-intake over the same time-frame. If your weight has remained constant, that average food-intake is your BMR. If your weight has gone down, your BMR is more than that average. If youir weight has gone up, your BMR is less than the average calorie-intake.
pacemaker
04-11-07, 06:46 PM
Google "Harris Benedict Equation" and see what you get. Its the standard equation for BMR. Its fairly accurate. I use it daily at work to calculate tube-feedings and I almost never have to adjust kcals/day once I have established the BMR and added the appropriate energy factors such as activity, stress, disease state, blah, blah, blah. But there-in lies the rub; BMR is no good if you do not apply the correct activity factors above your BMR to figure out how many kcals per day you actually need.
NoRacer
04-11-07, 07:24 PM
How about these:
Ref: http://www.bmi-calculator.net/bmr-calculator/bmr-formula.php
English BMR Formula
Women: BMR = 655 + ( 4.35 x weight in pounds ) + ( 4.7 x height in inches ) - ( 4.7 x age in years )
Men: BMR = 66 + ( 6.23 x weight in pounds ) + ( 12.7 x height in inches ) - ( 6.8 x age in year )
Metric BMR Formula
Women: BMR = 655 + ( 9.6 x weight in kilos ) + ( 1.8 x height in cm ) - ( 4.7 x age in years )
Men: BMR = 66 + ( 13.7 x weight in kilos ) + ( 5 x height in cm ) - ( 6.8 x age in years )
If you want to use RHR (what Resting Heart Rate has to do with this, I don't know), just tack this on to the end of any of the 4 formulii:
*(1/RHR *RHR)
Make sure you use parenthesis around the first part, as it needs to have precedence.
After this, then apply Harris-Benedict to the result.
Ref: http://www.bmi-calculator.net/bmr-calculator/harris-benedict-equation/
TwoTyred
04-12-07, 07:21 AM
Before this all gets too academic, let
me say thanks very much all! Another
idea i had, was to monitor HR for 24 hours
and see what k/cal those formulae would
indicate, --i know, i know, those are estimates
also, lastly, i've used fitday in the past, but
jeesus! whynot just buy colored pencils and
accurately sketch each meal as a still life--
talk about tedium!! I think an excellent product
would be something like a PDA that had all
the calorie info in a truely portable unit..
anyway, thanks again, and now i'm off to
see about the buy one get one sale on
oreos.. anyone had the ones with vanilla
outside and chocolate inside? Oh, so good
after 5 or 6 of the regualr ones....!! :)
HardyWeinberg
04-12-07, 11:05 AM
If you want to use RHR (what Resting Heart Rate has to do with this, I don't know), just tack this on to the end of any of the 4 formulii:
*(1/RHR *RHR)
Make sure you use parenthesis around the first part, as it needs to have precedence.
I apply this term to incorporate RHR into all my calculations.
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