Re: normal horses and substrates

[Tivers@aol.com]

In a message dated 12/16/99 1:09:41 PM Pacific Standard Time, lb@nismat.org 
writes:

<< Hey Tom,
 Is horse metabolism so different here  from rodent/human metabolism?  
 A person at rest, will often use entirely fats for energy.  At a 
 walk, in a trained individual, I still see them using almost entirely 
 fats.  At a slow jog mostly fats [again this in a trained individual, 
 an unfit person will be at near max and totally reliant upon carbs at 
 a slow jog.]  What are the RER values in horses during treadmill 
 exercise at sumbaximal workloads?  This info must be out there 
 somewhere, any one know?  Would be a fairly easy study if the lab has 
 a treadmill and metabolic cart.  Now, Tom,  carb 
 supplementation should still prolong their ability to exercise, don't 
 get upset here.
 
 Beth >>


Ok, do an experiment for me when you have a chance. Those highly trained, fat 
burning athletes--feed them a candy bar about an hour before a stress test 
and tell me if the fuel usage picture changes dramatically or not. That would 
be interesting. You should see higher post-ex lactates concurrent with better 
performance, indicating a shift towards carb metabolism and an ergogenic 
effect thereby.

ti


=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Ridecamp is a service of Endurance Net, http://www.endurance.net.    
Information, Policy, Disclaimer: http://www.endurance.net/RideCamp   
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=