Fat calories in lb or KG of body weight...

07-10.-2005, 01:20 AM	#1
wilmar13 Registered User Join Date: Dec 2003 Location: Charlotte, NC Posts: 1,557	Fat calories in lb or KG of body weight... Yeah I know one lb of fat is about 4000 cal (9cal/gram) or 9000cal/KG... but is the cal/gram indicative of what you will actually see in your body weight due to the water content of the fat or does the 9cal/gram of fat include the amount of water that actual body fat will retain? I did a quick search and didn't find my answer.

07-10.-2005, 02:03 AM

ric_stern/RST

Community Team

Join Date: Nov 2002

Location: Newport, South Wales

Posts: 3,831

Re: Fat calories in lb or KG of body weight...

Quote:

Originally Posted by wilmar13

Yeah I know one lb of fat is about 4000 cal (9cal/gram) or 9000cal/KG... but is the cal/gram indicative of what you will actually see in your body weight due to the water content of the fat or does the 9cal/gram of fat include the amount of water that actual body fat will retain? I did a quick search and didn't find my answer.

~3500 Kcal/lb of body fat

ric

__________________
http://www.cyclecoach.com

07-10.-2005, 02:14 AM

wilmar13

Registered User

Join Date: Dec 2003

Location: Charlotte, NC

Posts: 1,557

Re: Fat calories in lb or KG of body weight...

Quote:

Originally Posted by ric_stern/RST

~3500 Kcal/lb of body fat

ric

So your body doesn't actually retain any water with its fat stores? I know for myself as a larger person (6'4", 195lbs) my body weight can very by more than 10lbs solely because of hydration(could be more if talking about a dehydrated state). I just figured that if I went from 8% BF to 6% BF there would be that much less tissue to retain water... I mean besides your blood and gastrointestinal tract where is the water stored?

07-10.-2005, 02:21 AM

kmavm

Registered User

Join Date: May 2005

Location: Sunnyvale, CA

Posts: 324

Re: Fat calories in lb or KG of body weight...

Quote:

Originally Posted by wilmar13

More or less, no. Water is stored in your blood plasma, and is bound up with glycogen in your muscles and liver. Sure, there's lots of intracellular water, but that's not really "disposable."

And, being light by 5% of your bodyweight would very much count as a "dehydrated state." In fact, dangerously so. Drink some fluids out there, for goodness' sake.

07-10.-2005, 02:50 AM

ric_stern/RST

Community Team

Join Date: Nov 2002

Location: Newport, South Wales

Posts: 3,831

Re: Fat calories in lb or KG of body weight...

Quote:

Originally Posted by wilmar13

So your body doesn't actually retain any water with its fat stores?

it does. 1 lb = 454g x 9 Kcal = 4086 Kcal. As a lb of fat is ~ 3500 kcal, then some of the fat is water

ric

__________________
http://www.cyclecoach.com

07-10.-2005, 03:07 AM

zaskar

Registered User

Join Date: Aug 2003

Location: AZ

Posts: 863

Re: Fat calories in lb or KG of body weight...

Quote:

Originally Posted by wilmar13

10lbs or more in weight is a lot! drink more and check your carb intake.if your glycogen stores are depleted you will also be lighter as carbs retain water.

07-10.-2005, 03:08 AM	#7
Don Shipp Registered User Join Date: May 2005 Location: Barnet, London. Posts: 991	Re: Fat calories in lb or KG of body weight... I understand that fat has less water associated with it than anything else in your body, including bone. __________________ "Boudreaux pissed me off, what should I do?" "Nothing, just shut up and take his advice."

12-10.-2005, 07:03 AM	#8
John Budnik Registered User Join Date: Oct 2005 Location: New Paltz, NY Posts: 35	Re: Fat calories in lb or KG of body weight... I've always heard that, rule of thumb, the amount of water stored in a fat cell was up to 3 times it's weight. Now, this is just hear-say and I have nothing to back up that belief, but.... Recently I dropped about 20 lbs in 1 month by limiting my caloric intake to 500 calories below the level needed to maintain my weight & activity level. I have no hunger or energy issues. Now that would get me a weight drop of about 4 to 5 lbs in a month if that rule of thumb was bogus. But if it isn't bogus, then it would be almost expected to lose 20lbs in a month, which is what has happened. By the way the second month I dropped another 10lbs.

12-10.-2005, 07:43 AM

jrstevens

Registered User

Join Date: Dec 2004

Location: Ft Collins, CO

Posts: 303

Re: Fat calories in lb or KG of body weight...

Quote:

Originally Posted by John Budnik

I've always heard that, rule of thumb, the amount of water stored in a fat cell was up to 3 times it's weight. Now, this is just hear-say and I have nothing to back up that belief, but.... Recently I dropped about 20 lbs in 1 month by limiting my caloric intake to 500 calories below the level needed to maintain my weight & activity level. I have no hunger or energy issues. Now that would get me a weight drop of about 4 to 5 lbs in a month if that rule of thumb was bogus. But if it isn't bogus, then it would be almost expected to lose 20lbs in a month, which is what has happened. By the way the second month I dropped another 10lbs.

from a reputable source:

Approximately 60 to 85% of the weight of white adipose tissue is lipid, with 90-99% being triglyceride. Small amounts of free fatty acids, diglyceride, cholesterol, phospholipid and minute quantities of cholesterol ester and monoglyceride are also present. In this lipid mixture, six fatty acids make up approximately 90% of the total, and these are myristic, plamitic, palmitoleic, stearic, oleic, and linoleic. Varying the composition of your diet can vary the fatty acid profile in adipose tissue. The remaining weight of white adipose tissue is composed of water (5 to 30%) and protein (2 to 3%).

So although lipid is hydrophobic there is some water stored...

JS

12-10.-2005, 07:49 AM

#10

John Budnik

Registered User

Join Date: Oct 2005

Location: New Paltz, NY

Posts: 35

Re: Fat calories in lb or KG of body weight...

Quote:

Originally Posted by jrstevens

I recognize some of those words as english but unfortunately not enough to comprehend.

12-10.-2005, 08:16 AM

#11

jrstevens

Registered User

Join Date: Dec 2004

Location: Ft Collins, CO

Posts: 303

Re: Fat calories in lb or KG of body weight...

Quote:

Originally Posted by John Budnik

I recognize some of those words as english but unfortunately not enough to comprehend.

so the bottom line is there is water stored with bodyfat however the amount is fairly small and probably not affected much by changes in hydration
JS

12-10.-2005, 09:33 AM

#12

John Budnik

Registered User

Join Date: Oct 2005

Location: New Paltz, NY

Posts: 35

Re: Fat calories in lb or KG of body weight...

Quote:

Originally Posted by jrstevens

so the bottom line is there is water stored with bodyfat however the amount is fairly small and probably not affected much by changes in hydration
JS

Thanks for the laymens version. But still there seems to be a problem. To lose 20 lbs in 30 days would be cutting my calories by 2333/day. There is now possiblity that I did that. What are the possible scenarios?

12-10.-2005, 12:03 PM

#13

zaskar

Registered User

Join Date: Aug 2003

Location: AZ

Posts: 863

Re: Fat calories in lb or KG of body weight...

Quote:

Originally Posted by John Budnik

If i may throw in my 2 cents, i would think you cut your cals to much.maybe your needs were more then you figured. by cutting cals to much, perhaps your glycogen stores are depleted and you also lost lean mass due to to big of a cal deficit. (perhaps im way off im no expert) by the way, what methed did you use to determin your calorie needs?

12-10.-2005, 04:24 PM

#14

Don Shipp

Registered User

Join Date: May 2005

Location: Barnet, London.

Posts: 991

Re: Fat calories in lb or KG of body weight...

Quote:

Originally Posted by John Budnik

Although not much water is stored in fat, there is a great deal associated with glycogen (sugar) in muscle tissue and in the liver. When you deplete your glycogen reserves, a lot of water and therefore a lot of weight will be lost.

__________________
"Boudreaux pissed me off, what should I do?"
"Nothing, just shut up and take his advice."

12-10.-2005, 11:24 PM

#15

John Budnik

Registered User

Join Date: Oct 2005

Location: New Paltz, NY

Posts: 35

Re: Fat calories in lb or KG of body weight...

Quote:

Originally Posted by zaskar

I used a couple of methods just to cross verify, 2 from Chris Carmichael; his diet plan in his 7 Steps book & the calorie calculator on his website. I also checked out a different calorie calculator on some other website that I don't recall. As it stands now, I'm consuming 2600 cal/day while riding 100 miles/week. I'm currently 169lbs and last week I was hovering around 171 so I'm still dropping weight more rapidly than anybody recommends as being safe.

As an aside, I've had no issues with hunger or performance, except that my performance has skyrocketed. Oh yeah, one other thing, I used to have a coach thru Carmichael training, and he had me on 3100 cal/day but that was maintenance not weight lose.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode