Oh Boy!!! Was: Re: polymeal

[Guest guest]

Hi Tony:

Yes. It occurs to me now that if you have more muscle the heart will

have to pump harder to get the blood circulated to where it can get

to all the cells that need it. In contrast, adipose fat presumably

does not need much in the way of blood supply. So BP may be more

closely related to LBM than to fat mass.

This has come as news to me. But not to everyone here apparently.

Rodney.

>

> Having changed my body fat composition from over 18% fat to 13%

fat, I

> can provide some anecdotal insight that might be relevant to the LBM

> and blood pressure issue. As my body changed over the last couple

of

> years by shedding 17 pounds, my average systolic BP dropped from 125

> to 113. One of the physical differences that I noticed during my

> physical transforamtion was that the veins that had been submerged

> under a layer of fat are now just below the surface of my skin.

This

> re-alignment probably reduces the effort needed to pump blood. If

the

> veins were deep inside the muscle there would be a lot more

resistance

> to blood flow. I notice that when I exercise, my veins pop out more

> prominently, and once I cool off the veins flatten out.

>

> The recovery of BP associated with LBM may be nothing more than the

> observation of a mechanical process: when you use your muscles the

> fluid stored in the muscles gets squeezed out into the veins

> increasing BP, and when muscles relax, BP normalizes rapidly as

fluid

> gets back into the muscles. People with a higher %BF (less LBM)

would

> show this mechanism to a lesser extent, because exercise does not

> stimulate the fatty tissue to release fluid into the veins.

>

> Tony

> ===

>

> From: " jwwright " <jwwright@e...>

> Date: Sun Jan 9, 2005 2:43 pm

> Subject: Re: Oh Boy!!! Was: Re: polymeal

>

> LBM is the same as FFM, fat free mass. And my experience is that BP

is

> related to total weight.

> TOL: Fat and muscle cells alike must be serviced by the heart,

> although we think muscle burns more calories. Do we think the heart

> cares more about making energy than moving fluid to all cells?

> Probably not, but it probably moves the fluid in response to the

cells

> requirements. The mitochondria make the energy, not the heart with

the

> BP. Fluid flow allows the making of the energy. So it seems

reasonable

> the BP is related to fluid flow, and associated with LBM. It also

> seems reasonable the cell with the most requirements drives the

> heart's response which goes to all cells.

>

> My take is the lower metabolism the less BP and that would show up

as

> increased BP in those with more LBM, especially those USING the LBM.

> Reduce the LBM and you cant move as much fat around, and certainly

not

> as fast.

>

> Of course I want to preserve LBM - anyone really know how to do

that?

>

> Regards.