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Re: RC: x-factor



In a message dated 3/6/00 5:58:02 AM Pacific Standard Time, 
bolinger@bigsky.net writes:

<< Hey Ti---I know what FT and ST are, but what is FTC?  and if these are 
measured on a horse before it starts a long term conditioning program...can 
they change over time....i.e.. start out with a horse with more Fast 
Twitch...but him into a long distance conditioning program and three years 
later hove more Slow Twitch???  >>


FTC? Must be a typo. The fast Twitch High Oxidative is a cell type between FT 
and ST that the horse has a lot of. Both ST and FT will move toward FTH with 
conditioning. Basically, it's a stronger aerobic (with oxygen) cell. Also a 
transition cell, so there are all sorts of variations in terms of oxidative 
capacity and firepower among these cells. It's the most important muscle cell 
in flat racers going a mile or more and probably very important in endurance 
horses that are actually competiting.

ti



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