Re: RC: Breeds

["Truman Prevatt, Ph.D." <truman.prevatt@netsrq.com>]

Heidi,

I think you hit the nail on the head in that what you get at a ride is not the
true resting rate. Check in a mare and depending on where she is in her cycle
the check in rate can vary 20 bpm where as the resting rate is pretty
constant.  Same thing with a stallion.

Given that the heart is devlivering O2 and and carrying away waste products, in
a volumn of blood then the faster it has to beat to deliver the necessary
volumn implies that it is delivering less volumn per beat. Which either means
the heart is small or inefficient. In the extreme, neither case is desirable.

Truman

CMKSAGEHIL@aol.com wrote:

> In a message dated 6/13/00 6:56:04 PM Pacific Daylight Time,
> truman.prevatt@netsrq.com writes:
>
> << In humans the lower the resting heart rate the more efficeint the heart.
>  It is not accident that the best runners are the ones with the lowest
>  resting heart rate. At least that was the basic premise when I was
>  running. >>
>
> Up to a point, but have seen no practical advantage beyond that point.  I
> worry when the "true" resting rate (ie not necessarily what you get at ride
> check-in) is up in the 40's.  But I've seen no particular advantages from
> horses with resting rates in the low 20's vs horses in the mid 30's.  Again,
> no hard data here--just a quarter of a century of pulsing and vetting
> thousands of horses going thru rides...
>
> Heidi

--
Truman Prevatt
Brooksville, FL

Mystic "The Horse from Hell" Storm
Buck's Mystic Karma
Rocket a.k.a. Mr. Misty
Jordy a.k.a. Bridger (when he is good)
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