Quoted in Natural History Magazine, Decmber 2006-January 2007
(http://www.naturalhistorymag.com/). Click on Online Extras -
Samplings to view:
Running Man
Couch potatoes may disagree, but people are fairly well built to run
in the heat.["people"?? A adult young men of a few remote populations,
they mean?]
We sweat more per unit of body surface area than any
other animal, [Yes, never seen in cursorial mammals: it's a waste of
water+sodium: as Montagna said, "a real physiological blunder"]
and our upright posture exposes less body surface to
the sun than would walking on all fours, [yes, that's why all cursorial
animals walk on all twos... The upright/shadow "argument" goes back
to Lee 1950 (Schmidt-Nielsen "Desert animals"), but it holds only if you
stand still & completely vertical at 12 o'clock... Nobody hunts "upright",
of course: it's the best way to alarm your prey...)
and more surface to the
cooling wind. ["cooling" wind in "heat" where air temperatures at midday
far exceed 37°C??]
On the hunt, those traits give people a distinct
advantage over most quarry. [yes, of course, that's the reason why human
populations densities are highest in the savannas...]
In fact, Australian Aborigines and
various Native American and African groups have traditionally
practiced "persistence hunting," chasing antelopes or other game in
the midday heat, often for hours, until the animals overheat and
collapse. [I know an old man who hunts hares by slowly appraoching the
lair tangentially, in smaller & smaller circles. All he needs is a club.
No doubt all our ancestors once hunted in this traditional way... Not 2
days, but 10 minutes.]
During the past twenty years, Louis Liebenberg, an animal tracker
and the owner of CyberTracker Software in Cape Town, South Africa,
has observed the only persistence hunters still left, the !Xo
and /Gwi bushmen of the central Kalahari in Botswana. He reports a
success rate as high as 80 percent-and a meat yield that beats
hunting with bow and arrow, club, or spear. Only hunting with dogs
proved superior. [without arrow/club/spear/poison/bow... women, men & even
children can collect eggs, coconuts, crabs, shells etc. at the waterside]
Conditions have to be just right: the days must be long and hot, and
the terrain must slow down the quarry. Furthermore, the hunters must
be terrifically fit-the runs Liebenberg observed lasted as long as
six-and-a-half hours and covered as many as twenty-two miles. And
the hunters' tracking skills must be exquisite; finding and
following the quarry every time it bolts out of sight or mingles
with a herd is no easy task-teamwork helps. But done right,
Liebenberg says, persistence hunting is so effective that it may
have helped select for the excellent thermoregulatory system,["blunder" =
waste of water+sodium]
bipedal posture[no hunting animals is bipedal], and long strides[indris
have much longer strides...]
that we all possess. Perhaps
sadly, the practice is dying out, though the physical skill endures
in those who shun couches and run for fun. (Current Anthropology)
--Stéphan Reebs

Somebody sent this to AAThttp://groups.yahoo.com/group/AATbut I think this
sort of "discussions" are more suited for s.a.p [some comments between
brackets --MV]

Quoted in Natural History Magazine, Decmber 2006-January 2007
(http://www.naturalhistorymag.com/). Click on Online Extras -
Samplings to view:
Running Man
Couch potatoes may disagree, but people are fairly well built to run
in the heat.["people"?? A adult young men of a few remote populations,
they mean?]We sweat more per unit of body surface area than any> other animal, [Yes, never seen in cursorial mammals: it's a waste of
water+sodium: as Montagna said, "a real physiological blunder"]and our upright posture exposes less body surface to> the sun than would walking on all fours, [yes, that's why all cursorial
animals walk on all twos... The upright/shadow "argument" goes back
to Lee 1950 (Schmidt-Nielsen "Desert animals"), but it holds only if you
stand still & completely vertical at 12 o'clock... Nobody hunts "upright",
of course: it's the best way to alarm your prey...)and more surface to the> cooling wind. ["cooling" wind in "heat" where air temperatures at midday
far exceed 37°C??]On the hunt, those traits give people a distinct> advantage over most quarry. [yes, of course, that's the reason why human
populations densities are highest in the savannas...]In fact, Australian Aborigines and

various Native American and African groups have traditionally
practiced "persistence hunting," chasing antelopes or other game in
the midday heat, often for hours, until the animals overheat and
collapse. [I know an old man who hunts hares by slowly appraoching the
lair tangentially, in smaller & smaller circles. All he needs is a club.
No doubt all our ancestors once hunted in this traditional way... Not 2
days, but 10 minutes.]
During the past twenty years, Louis Liebenberg, an animal tracker
and the owner of CyberTracker Software in Cape Town, South Africa,
has observed the only persistence hunters still left, the !Xo
and /Gwi bushmen of the central Kalahari in Botswana. He reports a
success rate as high as 80 percent-and a meat yield that beats
hunting with bow and arrow, club, or spear. Only hunting with dogs
proved superior. [without arrow/club/spear/poison/bow... women, men & even
children can collect eggs, coconuts, crabs, shells etc. at the waterside]
Conditions have to be just right: the days must be long and hot, and
the terrain must slow down the quarry. Furthermore, the hunters must
be terrifically fit-the runs Liebenberg observed lasted as long as
six-and-a-half hours and covered as many as twenty-two miles. And
the hunters' tracking skills must be exquisite; finding and
following the quarry every time it bolts out of sight or mingles
with a herd is no easy task-teamwork helps. But done right,
Liebenberg says, persistence hunting is so effective that it may
have helped select for the excellent thermoregulatory system,["blunder" > > waste of water+sodium]
bipedal posture[no hunting animals is bipedal], and long strides[indris
have much longer strides...]that we all possess. Perhaps

sadly, the practice is dying out, though the physical skill endures
in those who shun couches and run for fun. (Current Anthropology)
--Stéphan Reebs[run for fun?? ]
I dont really have a dog in this fight, but think that more thot should

A man in decent shape (which means a lot leaner and harder than anyone
you'll ever meet sitting in front of a TV) can outrun almost any
animal: Horses, antelope, deer, etc. Not in short bursts, but in a
long, steady, mile-eating trot. American Indians, for example, had a
standard hunting tactic of literally running deer into the ground and
simply knifing them. Heck, I'm only an average sort of runner, but I've
run with my dog on a hot day until she just lies down, panting
desperately.

The issue is heat. Humans sweat, but most animals pant. Sweating vents
heat terrifically well. The air may be hot as Hell, but if you're
moving, and the air is dry, it will suck away the heat (thus the
"cooling wind"). So the hotter the better when it comes to running down
game.

Did nature spend thousands of years shaping these traits on the
savannah, or did we evolve them for some other purpose that just
happened to work out for running, too? Why don't all animals sweat, if
sweating is better? Maybe because we're the new kids on the block, so
to speak, and they never felt much evolutionary pressure from just one
predator? I dunno, I just know humans do seem to be built for
long-distance running.

Somebody sent this to AAT http://groups.yahoo.com/group/AAT but I think this
sort of "discussions" are more suited for s.a.p [some comments between
brackets --MV]

Quoted in Natural History Magazine, Decmber 2006-January 2007
(http://www.naturalhistorymag.com/). Click on Online Extras -
Samplings to view:
Running Man
Couch potatoes may disagree, but people are fairly well built to run
in the heat.["people"?? A adult young men of a few remote populations,
they mean?]

We sweat more per unit of body surface area than any
other animal, [Yes, never seen in cursorial mammals: it's a waste of
water+sodium: as Montagna said, "a real physiological blunder"]
and our upright posture exposes less body surface to
the sun than would walking on all fours, [yes, that's why all cursorial
animals walk on all twos... The upright/shadow "argument" goes back
to Lee 1950 (Schmidt-Nielsen "Desert animals"), but it holds only if you
stand still & completely vertical at 12 o'clock... Nobody hunts "upright",
of course: it's the best way to alarm your prey...)
and more surface to the
cooling wind. ["cooling" wind in "heat" where air temperatures at midday
far exceed 37°C??]

On the hunt, those traits give people a distinct
advantage over most quarry. [yes, of course, that's the reason why human
populations densities are highest in the savannas...]

In fact, Australian Aborigines and
various Native American and African groups have traditionally
practiced "persistence hunting," chasing antelopes or other game in
the midday heat, often for hours, until the animals overheat and
collapse. [I know an old man who hunts hares by slowly appraoching the
lair tangentially, in smaller & smaller circles. All he needs is a club.
No doubt all our ancestors once hunted in this traditional way... Not 2
days, but 10 minutes.]

During the past twenty years, Louis Liebenberg, an animal tracker
and the owner of CyberTracker Software in Cape Town, South Africa,
has observed the only persistence hunters still left, the !Xo
and /Gwi bushmen of the central Kalahari in Botswana. He reports a
success rate as high as 80 percent-and a meat yield that beats
hunting with bow and arrow, club, or spear. Only hunting with dogs
proved superior. [without arrow/club/spear/poison/bow... women, men & even
children can collect eggs, coconuts, crabs, shells etc. at the waterside]

Conditions have to be just right: the days must be long and hot, and
the terrain must slow down the quarry. Furthermore, the hunters must
be terrifically fit-the runs Liebenberg observed lasted as long as
six-and-a-half hours and covered as many as twenty-two miles. And
the hunters' tracking skills must be exquisite; finding and
following the quarry every time it bolts out of sight or mingles
with a herd is no easy task-teamwork helps. But done right,
Liebenberg says, persistence hunting is so effective that it may
have helped select for the excellent thermoregulatory system,["blunder" =
waste of water+sodium]
bipedal posture[no hunting animals is bipedal], and long strides[indris

have much longer strides...]
that we all possess. Perhaps
sadly, the practice is dying out, though the physical skill endures
in those who shun couches and run for fun. (Current Anthropology)
--Stéphan Reebs

[run for fun?? ]

shipmodeler1 wrote:
A man in decent shape (which means a lot leaner and harder than anyone
you'll ever meet sitting in front of a TV) can outrun almost any
animal: Horses, antelope, deer, etc. Not in short bursts, but in a
long, steady, mile-eating trot. American Indians, for example, had a
standard hunting tactic of literally running deer into the ground and
simply knifing them. Heck, I'm only an average sort of runner, but I've
run with my dog on a hot day until she just lies down, panting
desperately.

A number of years ago my neighbor had a cattle roundup scheduled months
in advance. Volunteers simply couldn't change their prior commitments,
they had to do it that day. Unfortunately "that day" turned out to be
one of the hottest days of the year. Because the country is so rough,
dogs are very good at rounding up cows in the bush. Three of seven
dogs they had with them perished do to the heat, they just didn't know
how to pace themselves like the men pacing the horses. Generally that
time of year the temps are in the low 80s, so there had never been a
problem before or they would have been forced to leave the dogs home.
IIRC, the afternoon temp was 107. Those three dogs literally ran
themselves to death. Your dog probably stops to rest because the
adrenaline of a hunt is not a factor.

Somebody sent this to AAT http://groups.yahoo.com/group/AAT but I think
this
sort of "discussions" are more suited for s.a.p [some comments between
brackets --MV]

Quoted in Natural History Magazine, Decmber 2006-January 2007
(http://www.naturalhistorymag.com/). Click on Online Extras -
Samplings to view:
Running Man
Couch potatoes may disagree, but people are fairly well built to run
in the heat.["people"?? A adult young men of a few remote populations,
they mean?]

Marthons. Millions run in them and shorter races.

We sweat more per unit of body surface area than any
other animal, [Yes, never seen in cursorial mammals: it's a waste of
water+sodium: as Montagna said, "a real physiological blunder"]
and our upright posture exposes less body surface to
the sun than would walking on all fours, [yes, that's why all cursorial
animals walk on all twos... The upright/shadow "argument" goes
back
to Lee 1950 (Schmidt-Nielsen "Desert animals"), but it holds only if
you
stand still & completely vertical at 12 o'clock... Nobody hunts
"upright",
of course: it's the best way to alarm your prey...)
and more surface to the
cooling wind. ["cooling" wind in "heat" where air temperatures at
midday
far exceed 37°C??]

When you run, you generate air flow.

Somebody sent this to AAThttp://groups.yahoo.com/group/AATbut I think this
sort of "discussions" are more suited for s.a.p [some comments between
brackets --MV]
Quoted in Natural History Magazine, Decmber 2006-January 2007
(http://www.naturalhistorymag.com/). Click on Online Extras -
Samplings to view:
Running Man
Couch potatoes may disagree, but people are fairly well built to run
in the heat.["people"?? A adult young men of a few remote populations,
they mean?]We sweat more per unit of body surface area than any> other
animal, [Yes, never seen in cursorial mammals: it's a waste of
water+sodium: as Montagna said, "a real physiological blunder"]and our
upright posture exposes less body surface to> the sun than would walking
on all fours, [yes, that's why all cursorial
animals walk on all twos... The upright/shadow "argument" goes
back
to Lee 1950 (Schmidt-Nielsen "Desert animals"), but it holds only if you
stand still & completely vertical at 12 o'clock... Nobody hunts
"upright",
of course: it's the best way to alarm your prey...)and more surface to
the> cooling wind. ["cooling" wind in "heat" where air temperatures at
midday
far exceed 37°C??]On the hunt, those traits give people a distinct
advantage over most quarry. [yes, of course, that's the reason why human
populations densities are highest in the savannas...]In fact, Australian
Aborigines and
various Native American and African groups have traditionally
practiced "persistence hunting," chasing antelopes or other game in
the midday heat, often for hours, until the animals overheat and
collapse. [I know an old man who hunts hares by slowly appraoching the
lair tangentially, in smaller & smaller circles. All he needs is a club.
No doubt all our ancestors once hunted in this traditional way... Not 2
days, but 10 minutes.]
During the past twenty years, Louis Liebenberg, an animal tracker
and the owner of CyberTracker Software in Cape Town, South Africa,
has observed the only persistence hunters still left, the !Xo
and /Gwi bushmen of the central Kalahari in Botswana. He reports a
success rate as high as 80 percent-and a meat yield that beats
hunting with bow and arrow, club, or spear. Only hunting with dogs
proved superior. [without arrow/club/spear/poison/bow... women, men &
even
children can collect eggs, coconuts, crabs, shells etc. at the
waterside]
Conditions have to be just right: the days must be long and hot, and
the terrain must slow down the quarry. Furthermore, the hunters must
be terrifically fit-the runs Liebenberg observed lasted as long as
six-and-a-half hours and covered as many as twenty-two miles. And
the hunters' tracking skills must be exquisite; finding and
following the quarry every time it bolts out of sight or mingles
with a herd is no easy task-teamwork helps. But done right,
Liebenberg says, persistence hunting is so effective that it may
have helped select for the excellent thermoregulatory system,["blunder"
=
waste of water+sodium]
bipedal posture[no hunting animals is bipedal], and long strides[indris
have much longer strides...]that we all possess. Perhaps
sadly, the practice is dying out, though the physical skill endures
in those who shun couches and run for fun. (Current Anthropology)
--Stéphan Reebs[run for fun?? ]

I dont really have a dog in this fight, but think that more thot should
go into the varied ecology of the oldest hominid skull yet found in

"Rich Travsky" <traRvEsky@hotmMOVEail.com> wrote in message
news:458B5CEC.A6CE478B@hotmMOVEail.com...

Somebody sent this to AAT http://groups.yahoo.com/group/AAT but I think
this
sort of "discussions" are more suited for s.a.p [some comments between
brackets --MV]

Quoted in Natural History Magazine, Decmber 2006-January 2007
(http://www.naturalhistorymag.com/). Click on Online Extras -
Samplings to view:
Running Man
Couch potatoes may disagree, but people are fairly well built to run
in the heat.["people"?? A adult young men of a few remote populations,
they mean?]

Marthons. Millions run in them and shorter races.

The first one who ran the marathon dropped dead...

We sweat more per unit of body surface area than any
other animal, [Yes, never seen in cursorial mammals: it's a waste of
water+sodium: as Montagna said, "a real physiological blunder"]
and our upright posture exposes less body surface to
the sun than would walking on all fours, [yes, that's why all cursorial
animals walk on all twos... The upright/shadow "argument" goes
back
to Lee 1950 (Schmidt-Nielsen "Desert animals"), but it holds only if
you
stand still & completely vertical at 12 o'clock... Nobody hunts
"upright",
of course: it's the best way to alarm your prey...)
and more surface to the
cooling wind. ["cooling" wind in "heat" where air temperatures at
midday
far exceed 37°C??]

When you run, you generate air flow.

:-D

Enough nonsense.

Marc Verhaegen wrote:

"Rich Travsky" <traRvEsky@hotmMOVEail.com> wrote in message
news:458B5CEC.A6CE478B@hotmMOVEail.com...

Somebody sent this to AAT http://groups.yahoo.com/group/AAT but I
think
this
sort of "discussions" are more suited for s.a.p [some comments between
brackets --MV]

Quoted in Natural History Magazine, Decmber 2006-January 2007
(http://www.naturalhistorymag.com/). Click on Online Extras -
Samplings to view:
Running Man
Couch potatoes may disagree, but people are fairly well built to run
in the heat.["people"?? A adult young men of a few remote
populations,
they mean?]

Marthons. Millions run in them and shorter races.

The first one who ran the marathon dropped dead... :-D

And the first one in the water probably drowned

We sweat more per unit of body surface area than any
other animal, [Yes, never seen in cursorial mammals: it's a waste of
water+sodium: as Montagna said, "a real physiological blunder"]
and our upright posture exposes less body surface to
the sun than would walking on all fours, [yes, that's why all
cursorial
animals walk on all twos... The upright/shadow "argument"
goes
back
to Lee 1950 (Schmidt-Nielsen "Desert animals"), but it holds only if
you
stand still & completely vertical at 12 o'clock... Nobody hunts
"upright",
of course: it's the best way to alarm your prey...)
and more surface to the
cooling wind. ["cooling" wind in "heat" where air temperatures at
midday
far exceed 37°C??]

When you run, you generate air flow.

:-D
Enough nonsense.

Just because you don't exercise doesn't mean no one else doesn't...

training in athletes can causes cardial arrhythmias and sudden death.
J.Ector cs.2007 "Reduced right ventricular ejection fraction in endurance
athletes presenting with ventricular arrhythmias: a quantitative
angiographic assessment" Eur.Heart J.28:183-189.

... recent research suggests that endurance training in athletes can
causes cardial arrhythmias and sudden death. J.Ector cs.2007 "Reduced
right ventricular ejection fraction in endurance athletes presenting with
ventricular arrhythmias: a quantitative angiographic assessment" Eur.Heart
J.28:183-189.

On 2007-02-17, Marc Verhaegen <fa204466@skynet.be> wrote:

training in athletes can causes cardial arrhythmias and sudden death.
J.Ector cs.2007 "Reduced right ventricular ejection fraction in endurance
athletes presenting with ventricular arrhythmias: a quantitative
angiographic assessment" Eur.Heart J.28:183-189.

This reference is wrong; it is to an article called:

"Evaluation of a radiation protection cabin for invasive
electrophysiological procedures"

Anthony

--
Anthony Campbell - ac@acampbell.org.uk
Microsoft-free zone - Using Linux Gnu-Debian
http://www.acampbell.org.uk (blog, book reviews,
on-line books and sceptical articles)
--

"Anthony Campbell" <ac@acampbell.org.uk> wrote in message
news:slrnetg7sr.mic.ac@arcadia.acampbell.org.uk...

training in athletes can causes cardial arrhythmias and sudden death.
J.Ector cs.2007 "Reduced right ventricular ejection fraction in endurance
athletes presenting with ventricular arrhythmias: a quantitative
angiographic assessment" Eur.Heart J.28:183-189.

This reference is wrong; it is to an article called:
"Evaluation of a radiation protection cabin for invasive
electrophysiological procedures"

Sorry, Anthony, the paper can be found
http://www.oxfordjournals.org/our_journals/eurheartj/press_releases/freepdf/ehl468.pdf

--Marc

"Rich Travsky" <traRvEsky@hotmMOVEail.com> wrote in message
news:45BD774C.667AAB65@hotmMOVEail.com...
Marc Verhaegen wrote:

"Rich Travsky" <traRvEsky@hotmMOVEail.com> wrote in message
news:458B5CEC.A6CE478B@hotmMOVEail.com...

Somebody sent this to AAT http://groups.yahoo.com/group/AAT but I
think
this
sort of "discussions" are more suited for s.a.p [some comments between
brackets --MV]

Quoted in Natural History Magazine, Decmber 2006-January 2007
(http://www.naturalhistorymag.com/). Click on Online Extras -
Samplings to view:
Running Man
Couch potatoes may disagree, but people are fairly well built to run
in the heat.["people"?? A adult young men of a few remote
populations,
they mean?]

Marthons. Millions run in them and shorter races.

The first one who ran the marathon dropped dead... :-D

And the first one in the water probably drowned :-D

Yes, my boy, not unlikely: most aquatic mammals ultimately drown.
But they don't drown with their first long swim...

We sweat more per unit of body surface area than any
other animal, [Yes, never seen in cursorial mammals: it's a waste of
water+sodium: as Montagna said, "a real physiological blunder"]
and our upright posture exposes less body surface to
the sun than would walking on all fours, [yes, that's why all
cursorial
animals walk on all twos... The upright/shadow "argument"
goes
back
to Lee 1950 (Schmidt-Nielsen "Desert animals"), but it holds only if
you
stand still & completely vertical at 12 o'clock... Nobody hunts
"upright",
of course: it's the best way to alarm your prey...)
and more surface to the
cooling wind. ["cooling" wind in "heat" where air temperatures at
midday
far exceed 37°C??]

When you run, you generate air flow.

:-D
Enough nonsense.

Just because you don't exercise doesn't mean no one else doesn't...

Apparently you are unaware that recent research suggests that endurance
training in athletes can causes cardial arrhythmias and sudden death.
J.Ector cs.2007 "Reduced right ventricular ejection fraction in endurance
athletes presenting with ventricular arrhythmias: a quantitative
angiographic assessment" Eur.Heart J.28:183-189.