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[at-l] re: questions

>Anyone with asthma will tell you it's much harder to breath in high humidity 
>than dry air.  I can't explain the physiological process, I just know I have 
>one *H* of a time climbing a mountain but add on high humidity and it's the 
>>
>Now to my next question!  A couple recent hikes in super high humidity
>have introduced me to new levels of oxygen starvation.  Again, a
>simple concept that I can grasp...if the air is overfull with water
>vapor (humidity), there is less room for oxygen. 

No, same amount of oxygen


 Or is it that the
>oxygen is less accessible to the lungs?  

no, it works the same

And had anyone ever compared
>the effects of exercise in high humidity to exercise in high altitudes?
>Could pulmaonary prob;ems happen at lower altitudes if one is exposed to
>constant high humidities?
>
>And is more energy needed to 'push' through the heavy air?

humid air is light air, molecular weight of water is less than air, that's
why you have low atmospheric pressure when bad weather (moist humid air)
moves in.  Dry clear weather is characterized with high pressure.

What happens in high humidity is that your ability to cool is lessened.
Humid air resists evaporation of sweat (since the air is already saturated
with water vapor, it resists the addition of any more).  Your body gets hot
(in some cases too hot) and sweats even more.  This is additional work that
it is doing above your hiking.  When your core temperature rises above
normal (usually th e98.6F that we are familliar with) it starts to shut
down.  This is the onset of heat exhaustion.  If the core temperature
continues to rise, the body can lose its ability to regulate itself
completely.  This is heat stroke which can be fatal.  These thermal effects
are more pronounced in heavy out of shape people, but still effect
everybody (basic laws of physics).  Listen to what your body is telling you.  

Jerry Jensen
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Cc:            Gweneeth Conklin <gconklin@isr.umich.edu>, AT-L <at-l@saffron.hack.net>
From:          "Milt Webb, IQ Software" <milt@iqsc.com>
Date:          Wed, 3 Sep 1997 09:21:37 -0400 (EDT)
Subject:       Re: [at-l] Superfeet Insoles
Content-type:  TEXT/PLAIN; charset=US-ASCII

On Tue, 2 Sep 1997, Pete Fornof wrote:

> Gweneeth Conklin wrote:
> 
> > Can anyone tell me more about the insoles called Superfeet.  We had a
> > post
> > some time back that talked about them and they came highly
> > recommended.
> >  Thanks
> >
> 
> Gweneeth:
> 
> I purchased my Superfeet insoles when I bought my Asolo boots on the
> recommendation of the store clerk. I don't have any technical
> information on them, but they seem to work for me. I haven't had a
> blister yet and my feet don't feel beat up after a long hike on rough
> terrain.
> 
> I can't say whether the factory insoles that came with the boot would be
> better or not, but the Superfeet looked much more substantial than the
> stock product. Sorry I can't help more.
> 
> Peter H. Fornof

I used them last year quite a bit, but they never really conformed to my
feet properly. They are fairly rigid (not cushy) and are supposed to
gradually change shape over time (or maybe your feet have to change ;-)
to provide a goof fit.

If they feel good they may work. They probably wont provide much in the
way on cushioning for the heel if you need that. 

I'm currently looking for some anti-gravity insoles. Will let you know
when I find 'em...

Loving this short week,
Milt

------------------------------------------------------------------------
    milt webb - iq software corporation - 3295 river exchange drive
     norcross, georgia usa 30092 - 770/446-8880x245 - www.iqsc.com

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