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-   -   Frankly guys, do you still believe in those scientific formulas and calculators? (https://www.fitday.com/fitness/forums/weight-loss-tips/3845-frankly-guys-do-you-still-believe-those-scientific-formulas-calculators.html)

eric1407 03-28-2011 08:18 PM

Frankly guys, do you still believe in those scientific formulas and calculators?
 
The BMI (Body Mass Index) is a joke! I donít know why this formula is well accepted in fitness field!
I have decided to stop believing in those arithmetical formulas.
:D

jjeand 03-28-2011 08:38 PM

BMI is a great tool. It works along the bell curve. The majority of people's healthy weight will fall in the 'healthy BMI' range. That means that anyone within the average range of bone structure and average range of muscle tone will hit the healthy BMI range when they have an acceptably healthy fat%. Not average? My guess is you already knew that mainstream charts weren't going to work for you. But for most of us it gives a realistic number to start with.

Personally I like the way it cuts across height differences. My 145 lbs daughter will occasionally stress about how 'huge' she is compared to her 115 lb older sister. Their BMI's - 22 and 21. I remind her of that and she calms down. Her older sis is much shorter, not much smaller.

cjohnson728 03-28-2011 09:32 PM

Are you railing against all calculators and formulae, or just BMI?

Personally, I find many of them helpful. Calories needed, calories burned, body fat estimate, recipe calculators...somehow I find it comforting to have some information and guidelines.

However, I will say that I take all of them with a grain of salt, know exactly what they measure, and am aware that there are limitations to each of them. I also know that for different individuals, mileage may vary. Like anything else, do your research, take what you personally can use, and leave the rest.

taubele 03-28-2011 09:34 PM

As usual, Cassie said it perfectly :D

eric1407 03-28-2011 10:13 PM


Originally Posted by cjohnson728 (Post 41538)
body fat estimate


Can you calculate my body fat estimate if I I weigh 300 lbs and my height is 5"11?
:D

eric1407 03-28-2011 10:15 PM


Originally Posted by jjeand (Post 41528)
BMI is a great tool.

Can you calculate my MBI if I I weigh 300 lbs and my height is 5"11?
Am I obese or not?
:D

Misery16226 03-28-2011 10:43 PM

Obviously at 300 pounds, no matter what your height is.. If you have excess flab and can barely run a mile.. It's likely you are obese. If its muscle you would clearly know. It doesn't take a brain surgeon to understand that an extremely muscular and fit person is not obese no matter what they weigh. I think body fat % is more accurate. But BMI is pretty good for anyone who isn't body building. Personally I don't think anyone should weigh 300 pounds, muscle or not. Just because its muscle doesn't mean you can't go overboard.

eric1407 03-28-2011 11:06 PM


Originally Posted by Misery16226 (Post 41551)
Obviously at 300 pounds, no matter what your height is.. If you have excess flab and can barely run a mile.. It's likely you are obese. If its muscle you would clearly know. It doesn't take a brain surgeon to understand that an extremely muscular and fit person is not obese no matter what they weigh. I think body fat % is more accurate. But BMI is pretty good for anyone who isn't body building. Personally I don't think anyone should weigh 300 pounds, muscle or not. Just because its muscle doesn't mean you can't go overboard.

This guy is Ronnie Coleman the winner of Mr. Olympia several times, he weighs 300 lbs during context ! and he measures 5'11" :D
According to BMI formula Ronnie's BMI is 42 !
http://www.bodybuilding.com/fun/olym...res_ronnie.jpg

eric1407 03-28-2011 11:08 PM


Originally Posted by Misery16226 (Post 41551)
I think body fat % is more accurate..

How can you measure body fat% with those formula ?
:rolleyes:

cjohnson728 03-28-2011 11:20 PM

There are numerous formulae online to calculate body fat; just Google it. The part of my post that pointed to "recognize limitations" and "your mileage may vary," I think, made it clear that I don't believe they work in all cases. That's no reason to throw them out for the folks they do work for. You should, with minimal research, know if you're an "outlier."


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