Hyponatremia,Too Much Water Can Kill

"Kenny" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

http://www.nytimes.com/2005/04/14/health/14water.html?ex=1271131200&en=b9b075690fd32849&ei=5088&partner=rssnyt

Quoted message said:

Also:
http://www.ultracycling.com/nutrition/nutrition.html

"Kenny" <[email hidden]> wrote in
news:[email hidden]:

Quoted message said:

http://www.nytimes.com/2005/04/14/health/14water.html?ex=1271131200&en=b9b
075690fd32849&ei=5088&partner=rssnyt

Those people were drinking way to much water (several pints per hour) and
also drinking it too quickly (sometimes 2-3 pints in one shot). The main
problem is that runners don't carry their own water, so are forced to chug it
at water stops set up along the course.

If you sip your water and maintain a 1-2 pint per hour rate, you should be
OK. Sports drinks or energy bars containing sodium will help. If you have
questions about your drinking rate, weigh yourself before and after a
training ride. If you gained weight, you drank too much.

Ya know, this is a real issue (hyponatremia) but we see this condition
in a post every coupla months or so.

As a real issue, it is something to be aware of, BUT.... this is a Dove
soap issue.

I would wager that for 99.47% of cyclists, dehydration of some severity
or another is affecting performance rather than over-hydration.

App

Quoted message said:

Ya know, this is a real issue (hyponatremia) but we see this condition
in a post every coupla months or so.

As a real issue, it is something to be aware of, BUT.... this is a Dove
soap issue.

I would wager that for 99.47% of cyclists, dehydration of some severity
or another is affecting performance rather than over-hydration.

I doubt that dehydration is a real problem. We are more likely to drink
too much in an effort to cool down than we are to drink too little.

--

David L. Johnson

__o | "A foolish consistency is the hobgoblin of little minds, adored
_`\(,_ | by little statesmen and philosophers and divines." --Ralph Waldo
(_)/ (_) | Emerson

David L. Johnson said:

Quoted message said:

Ya know, this is a real issue (hyponatremia) but we see this

condition

Quoted message said:

Quoted message said:

in a post every coupla months or so.

As a real issue, it is something to be aware of, BUT.... this is a

Dove

Quoted message said:

Quoted message said:

soap issue.

I would wager that for 99.47% of cyclists, dehydration of some

severity

Quoted message said:

Quoted message said:

or another is affecting performance rather than over-hydration.

I doubt that dehydration is a real problem. We are more likely to

drink

Quoted message said:

too much in an effort to cool down than we are to drink too little.

In ultra-cycling events dehydration can be a real problem. It's really
hard to keep up with sweating.

Quoted post said:

Ya know, this is a real issue (hyponatremia) but we see this condition
in a post every coupla months or so.

As a real issue, it is something to be aware of, BUT.... this is a Dove
soap issue.

I would wager that for 99.47% of cyclists, dehydration of some severity
or another is affecting performance rather than over-hydration.

It may be a relatively uncommon problem, but probably worthwhile to
get the word out for a couple reasons: First, this seems to happen
mainly to inexperienced participants, second while dehydration may
affect performance, hyponatremia has the potential to rapidly kill.

One more of the dangers of DHMO.

I'm not sure if it is true or not, but I have heard that dogs have the
abillity to replace their water losses gram for gram.

In article <[email hidden]>,

David L. Johnson said:

Quoted message said:

Ya know, this is a real issue (hyponatremia) but we see this condition
in a post every coupla months or so.

As a real issue, it is something to be aware of, BUT.... this is a Dove
soap issue.

I would wager that for 99.47% of cyclists, dehydration of some severity
or another is affecting performance rather than over-hydration.

I doubt that dehydration is a real problem. We are more likely to drink
too much in an effort to cool down than we are to drink too little.

It's fun during a warm or strenuous road race to watch for the riders
who have visible salt crusts on their face from perspiration during the
event. I've done the salty-face thing once or twice myself.

--
Ryan Cousineau, [email hidden] http://www.wiredcola.com
Verus de parvis; verus de magnis.

Jim Smith said:

"[email hidden]" <[email hidden]> writes:

I'm not sure if it is true or not, but I have heard that dogs have the
abillity to replace their water losses gram for gram.

Dogs can't sweat, their only way of cooling off is through panting. Since they can't shed water in the rate a sweating human can they are much more prone to overheating than dehydration.

Jim Smith said:

Quoted post said:

Ya know, this is a real issue (hyponatremia) but we see this

condition

Quoted message said:

Quoted message said:

in a post every coupla months or so.

As a real issue, it is something to be aware of, BUT.... this is a

Dove

Quoted message said:

Quoted message said:

soap issue.

I would wager that for 99.47% of cyclists, dehydration of some

severity

Quoted message said:

Quoted message said:

or another is affecting performance rather than over-hydration.

It may be a relatively uncommon problem, but probably worthwhile to
get the word out for a couple reasons: First, this seems to happen
mainly to inexperienced participants, second while dehydration may
affect performance, hyponatremia has the potential to rapidly kill.

Part of the problem was ignorance in the medical community, the first
thing they do when athletes collapse is start an IV. Also worth noting
is that this problem can be viewed as a surplus of water or a shortage
of salt. With health-conscious people shunning salt, this problem can
be compounded. Performance wonks, afraid of loosing any edge from
dehydration, are prone to force-feeding themselves water.

Cycling is different that running in that the speed is higher, the
added air flow causes sweat to be evaporated at a higher rate, cooling
more effectively, but sometimes concealing how much fluid (water and
salt) is being lost. I've lost 10 lb or so of water weight (out of 235)
on hot double centuries, and returned with black shorts looking gray
and black helmet straps white from salt crystals. Under these
conditions you have to make sure you consume extra salt to maintain
reserves, not so much because of hyponatremia, but because you tend to
loose a sense of thirst, which makes dehydration more likely.