Low carb and endurance running -- results of my experiment

On Sat, 25 Sep 2004 04:08:30 GMT, Sam wrote:

From what I understand, our metabolism has not changed in the last 40,000
years.

How would you know? 40,000 years and NO changes?

We still are wired for fight or flight. We still produce adrenaline in
stressful situations for instance.

Two different scenarios not necessarily equitable.

Were homo sapiens sharing the planet with saber tooth tigers?

This would fall into the area of anthropology.

Did anthropologists educate you to the (lack of) metabolic changes in
humans over 40K years?

On Sat, 25 Sep 2004 04:10:53 GMT, Sam wrote:

It looks like you are disagreeing that
glycogen use does not change with intensity.

Most certainly does.

I am still waiting to see documentation that the body uses fats first.

Never said that, mof, just the opposite when considering the initial energy
consumption required in human locomotion and movement under an increasing
load.

This
implies a temporal chain of events much like shifting from one fuel tank to
another.

Not implied, acknowledged.

On Sat, 25 Sep 2004 04:10:53 GMT, Sam wrote:

It looks like you are disagreeing that
glycogen use does not change with intensity.

Most certainly does.

I am still waiting to see documentation that the body uses fats first.

Never said that, mof, just the opposite when considering the initial energy
consumption required in human locomotion and movement under an increasing
load.

This
implies a temporal chain of events much like shifting from one fuel tank to
another.

Not implied, acknowledged.

On Sat, 25 Sep 2004 04:03:38 GMT, Sam wrote:

Oxygen is not used for fuel; carbohydrates, fats and proteins are fuel.
Oxygen does not even enter into the process until the electron transport
chain. ATP, the "currency" of energy, is produced before O2 even enters in
the equation.

Slow Twitch muscle fibres have the ability to use fat as a fuel source, but
only during oxygen dependent conditions. Fat cannot be mobilized for energy
without the presence of oxygen and carbohydrate. O2, therefore, "fuels" the
chemical processes.

You make it sound as if the body "burns" the glycogen and then shifts
to fat once that is exhausted much like switching to a reserve fuel tank on
a plane or a boat. That is just not true.

Correct, that is not.

Not supported at all. At an RER
of 0.85 (which is easy running) the contribution from fats and carbohydrate
is about 50:50.

Too dependent on the individual to make such a sweeping generalization.

Since LA rarely sprints (although I saw him win a field sprint in
April!), he rarely uses alactic energy system so he is not a good example
really. In reality, we never stop using oxygen even in an all out sprint.

Correct again. It is O2 dependent not O2 absolute and O2 independent not O2
absent.

On Sat, 25 Sep 2004 04:03:38 GMT, Sam wrote:

Oxygen is not used for fuel; carbohydrates, fats and proteins are fuel.
Oxygen does not even enter into the process until the electron transport
chain. ATP, the "currency" of energy, is produced before O2 even enters in
the equation.

Slow Twitch muscle fibres have the ability to use fat as a fuel source, but
only during oxygen dependent conditions. Fat cannot be mobilized for energy
without the presence of oxygen and carbohydrate. O2, therefore, "fuels" the
chemical processes.

You make it sound as if the body "burns" the glycogen and then shifts
to fat once that is exhausted much like switching to a reserve fuel tank on
a plane or a boat. That is just not true.

Correct, that is not.

Not supported at all. At an RER
of 0.85 (which is easy running) the contribution from fats and carbohydrate
is about 50:50.

Too dependent on the individual to make such a sweeping generalization.

Since LA rarely sprints (although I saw him win a field sprint in
April!), he rarely uses alactic energy system so he is not a good example
really. In reality, we never stop using oxygen even in an all out sprint.

Correct again. It is O2 dependent not O2 absolute and O2 independent not O2
absent.

On Sat, 25 Sep 2004 04:15:18 GMT, Sam wrote:


Google MU.

You gotta be kidding me...

Why? Your colleagues chastised me for not doing the same with you.

Okay I Googled "MU", the first 3 pages gave me nothing that I thought would
refer to you.

How about a name? How about where you got your education?

Mu is my name and my education(s) are both academic and empirical as well
they should be.

You can look up my papers. PubMed search: Callan, SD. You will find a
paper on wrestlers and a couple on hyperoxic training (maybe an abstract
only on Nordic skiing) that I was a contributor on.

Nice. I have several contributions myself but never claim to be able to
professionally discern the credibility and usefulness of scientific study.

On Sat, 25 Sep 2004 04:15:18 GMT, Sam wrote:


Google MU.

You gotta be kidding me...

Why? Your colleagues chastised me for not doing the same with you.

Okay I Googled "MU", the first 3 pages gave me nothing that I thought would
refer to you.

How about a name? How about where you got your education?

Mu is my name and my education(s) are both academic and empirical as well
they should be.

You can look up my papers. PubMed search: Callan, SD. You will find a
paper on wrestlers and a couple on hyperoxic training (maybe an abstract
only on Nordic skiing) that I was a contributor on.

Nice. I have several contributions myself but never claim to be able to
professionally discern the credibility and usefulness of scientific study.

On Sat, 25 Sep 2004 04:03:56 -0400, Bob (this one) wrote:

Try "Michael Underwood" and see if it gets you anywhere.

Caught again. You're too good, Bob.

MU_mmy is a
fraud who changes his name and email addy to escape killfiles. He has
told some zany whoppers about himself; boasts that on the face of them
are simply and literally incredible.

Here. Look at some utterly hilarious stuff:
http://tinyurl.com/hdex
http://www.geocities.com/tanirevek/Roose.html
http://tinyurl.com/royd

Didn't look, Bob, I just hang Mu head in shame.

You may rest assured that there will be no papers with this wacko's
name on them.

Correct, not a one authored by MU.

He has repeatedly asserted that he's unqualified to read
scientific papers.

Sure am.

He regularly claims that faith is a better source
of information than logic or science. He's a fundamentalist crazy.

Obsessed with MU MU MU MU MU MU MU.

Bob, get a grip.

Michael

On Sat, 25 Sep 2004 04:03:56 -0400, Bob (this one) wrote:

Try "Michael Underwood" and see if it gets you anywhere.

Caught again. You're too good, Bob.

MU_mmy is a
fraud who changes his name and email addy to escape killfiles. He has
told some zany whoppers about himself; boasts that on the face of them
are simply and literally incredible.

Here. Look at some utterly hilarious stuff:
http://tinyurl.com/hdex
http://www.geocities.com/tanirevek/Roose.html
http://tinyurl.com/royd

Didn't look, Bob, I just hang Mu head in shame.

You may rest assured that there will be no papers with this wacko's
name on them.

Correct, not a one authored by MU.

He has repeatedly asserted that he's unqualified to read
scientific papers.

Sure am.

He regularly claims that faith is a better source
of information than logic or science. He's a fundamentalist crazy.

Obsessed with MU MU MU MU MU MU MU.

Bob, get a grip.

Michael

On Sat, 25 Sep 2004 03:23:03 GMT, Sam wrote:

Is a master's degree in exercise science and 7 years of application enough?

Nope,.

Throw in a couple of peer reviewed papers for good measure.

Sorry, MU seeks and is advised by those who are much better educated, older
and authored.