Determination of Caloric Intake Using Body Measurements (+Exercise)

[Guest guest]

Hi JW:

Well what I was thinking was something along these lines:

If caloric expenditure is a function of weight; height; age; and

exercise (H- ..........

And BMI is a function of weight; and exercise ..........

And weight is a function of lean; bone; and fat ..............

And bone is a function of wrist diameter ........

And fat is some function of abdomen/waist/hip/height

measurements ..........

And lean is a function of bicep; and wrist measurements ..........

ETC

Then, along with information about exercise, by simple algebraic

manipulation one should be able to come up with a formula using body

measurements that will tell you within 50 calories, for someone whose

weight is stable, what that person's average daily caloric intake has

been in the past, say, twelve months. By breaking out lean, bone and

fat components and so on, the resulting formula would be a much more

useful measure than BMI.

This assumes that for any individual a given caloric intake has a

corresponding equilibrium body weight. [For example: if on a 2000

calorie diet a person's weight has been stable at 180 pounds; then on

a 2500 calorie diet their weight would not increase one pound a week

for ever, it would rise to an equilibrium level at which caloric

expenditure, because of the extra calories burned by a heavier body,

once again equalled the new intake of 2500 calories].

If I was prepared to spend the time, and had the background data for

relationships between body measurements and weight etc., I could

probably do it myself. But got better (imo!) things to do.

Rodney.

> > >

> > > Hi All,

> > >

> > > Are we to believe that the women had calorie intakes of

less

> than

> > > 1600 while having only 29% that had a BMI less than 25?

> > >

[Guest guest]

You'd need to know how much energy is wasted and that's where all discussions end in the nutrition field. They always assume we absorb everything we eat and that's not true, it's not possible and it's not feasible to even get to that point if we remain healthy.

I'm sure I waste a cupla hundred calories on a given day, but if my body wanted to, it would extract the 2000 kcals in my gut that it carries in reserve. If I don't eat, I don't defecate, and the following day I would be running short of energy, then conversion of protein takes place. These are well defined in MNHD. What is not too well known is why the body will add weight instead of wasting the extra calories. We have to stay on the short side of intake to control weight.

And that factor changes with age.

Alan, eg, eats more than I do. Dean eats more than I do. Yet I can carry either up the stairs on my shoulder. A small amount of real work is done doing that. A lot more work is done just in maintaining the body. Like 1591 (today) of the 1800 I eat.

Even though both of them are starving at 2000 or more calories, I exist in an overweight status easily gaining weight if I eat too much.

Alan can't gain weight - a lot of people can't gain weight.

My oldest son is 47yo , 135#, has never eaten LESS than 3500 kcals usually more. He could eat at Mac's 3x and never add weight.

It's not metabolism - that's defined by H-B. It's something else. His bro is 215#. Another bro 165# max. These things are highly individualistic.

Some day we'll define those models and then we can equate the other things, maybe. I know a guy who claims to have over 1000 differential equations just in hypertension. NO ONE can handle 1000 variables. And that's the medical world, not the CR domain.

Regards.

----- Original Message -----

From: Rodney

Sent: Thursday, December 02, 2004 7:15 AM

Subject: [ ] Determination of Caloric Intake Using Body Measurements (+Exercise)

Hi JW:Well what I was thinking was something along these lines:If caloric expenditure is a function of weight; height; age; and exercise (H- ..........And BMI is a function of weight; and exercise ..........And weight is a function of lean; bone; and fat ..............And bone is a function of wrist diameter ........And fat is some function of abdomen/waist/hip/height measurements ..........And lean is a function of bicep; and wrist measurements ..........ETCThen, along with information about exercise, by simple algebraic manipulation one should be able to come up with a formula using body measurements that will tell you within 50 calories, for someone whose weight is stable, what that person's average daily caloric intake has been in the past, say, twelve months. By breaking out lean, bone and fat components and so on, the resulting formula would be a much more useful measure than BMI.This assumes that for any individual a given caloric intake has a corresponding equilibrium body weight. [For example: if on a 2000 calorie diet a person's weight has been stable at 180 pounds; then on a 2500 calorie diet their weight would not increase one pound a week for ever, it would rise to an equilibrium level at which caloric expenditure, because of the extra calories burned by a heavier body, once again equalled the new intake of 2500 calories]. If I was prepared to spend the time, and had the background data for relationships between body measurements and weight etc., I could probably do it myself. But got better (imo!) things to do.Rodney.> > >> > > Hi All,> > >> > > Are we to believe that the women had calorie intakes of less > than> > > 1600 while having only 29% that had a BMI less than 25?> > >