Re: [QSEndurance] RE: RC: RE: Fwd: physiology of weight

["Barbara McCrary" <bigcreekranch@cruzio.com>]

Possible answer to last paragraph:  Smarter riders, better conditioned
horses, more naturally talented horses to begin with.

Barbara

----- Original Message -----
From: "Mike Sofen" <msofen@pacbell.net>
To: <tprevatt@mindspring.com>
Cc: <ridecamp@endurance.net>; <QSEndurance@yahoogroups.com>
Sent: Tuesday, February 12, 2002 5:50 PM
Subject: [QSEndurance] RE: RC: RE: Fwd: physiology of weight


> Wonderful points, Truman.  But!  If weight were the only factor of
> importance, then ONLY FW/LW riders would ever top ten.  If the physics
> around carried weight are valid, then there is no way to compensate for
it -
> it must be in effect for every rider and horse on every ride.
>
> My point - there must be some other aspects of the horse/rider equation
that
> allow MW/HW riders to win and top ten events.  I would love to find out
what
> those are.
>
> Mike Sofen
>
> -----Original Message-----
> From: Truman Prevatt [mailto:tprevatt@mindspring.com]
>
> Mike you have just answered your own question. Work required is directly
> proportional to mass - that's high school physics. It takes twice the work
> to
> carry a 220 pound rider than it does a 110 pound ride. Since the
conversion
> of
> chemical energy to mechanical energy (which is how the body works) is not
> 100%
> efficient, maybe 50%, the other portion of the energy is converted to
heat.
> This
> heat has to be dissipated. So a horse carrying a 220 pound rider has to
> dissipate twice the heat as a horse carrying a 110 pound ride. Here is
where
> Howard may have had a good point but didn't know it :-), in the humidity
it
> is
> harder to dissipate heat than in arid and semi-arid climates. So the heat
> dissipation related to weight differences may in fact be slightly bigger
> issue
> in the East than the West, but I doubt it.
>
> The more heat required to be dissipated the more sweat, the more
> electrolytes
> lost, the higher the stress on the metabolic system. So I would say from a
> string of conclusions using no more than high school physics, there is a
> significantly higher stress level on a horse carrying 220 pounds vs 110
> pounds.
>
> On question, how do you compensate for the "mitigating factor" of a horse
> carrying a heavier weight producing more heat in proportion of the weight
> carried?
>
> Cheers,
> Truman
>
>
>
> ------------------------ Yahoo! Groups Sponsor ---------------------~-->
> Get your FREE credit report with a FREE CreditCheck
> Monitoring Service trial
> http://us.click.yahoo.com/ACHqaB/bQ8CAA/ySSFAA/87drlB/TM
> ---------------------------------------------------------------------~->
>
> To unsubscribe from this group, send an email to:
> QSEndurance-unsubscribe@onelist.com
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
>