HR impacting stomach absorption rates

[Travs]

I've tried a quick search around for anything to do with this but not been successful. I was wondering whether there is any link between the HR zone/work rate and the stomach/intestine's efficiency/effectiveness to absorb food?
Just something I'm considering whilst on a ride - if I'm hammering it does it mean my stomach is sitting with food in it unable to absorb because more than likely blood is servicing legs and other vital organs?

Cheers,

 

[Tommy2]

Blood is going to the muscles that need it most ie the legs so isn't going to the stomach therefore if you've had a large meal then go exercise hard your body will likely show you your dinner again.
so yeah I think it will sit there and digest very slowly possibly causing discomfort.

 

[cyberknight]

The commonly held theory is you can only absorb about 90 g of energy per hour through glucose/fructose pathways , 1 g = 4 kcal ( dont quote me )

 

[T.M.H.N.E.T]

Yes. Working hard enough secondary functions will slow to aid more energy and oxygen to the working muscle.

What can also happen is very rapid emptying of bowels.

 

[Fab Foodie]

I have the opposite .... After a meal I can't get any blood to my legs ....

 

[GrumpyGregry]

Yes. Working hard enough secondary functions will slow to aid more energy and oxygen to the working muscle.

What can also happen is very rapid emptying of bowels.

Or vomiting...

 

[Travs]

Thanks for the info and confirmation - does anyone know if there is an advised or documented research on the %ofMHR or Zone that you should bring your pulse down to?
Considering racers are cramming Gels in occasionally, I assume they are sitting around Threshold - so is that OK or does it depend on what you're eating ( e.g. -20bpm for solid food etc etc).
I never go out and cane it after a big meal but if I'm trying to get a decent time on a ride but need to back off to feed, just wonder what's a reasonable point tot go down to etc.

 

[Sittingduck]

If you mean eating a gel or quick snack on the fly, then I don't think you particularly need to worry about lowering HR by a specific %
I think your HR will just drop anyway when you stop your full on effort and start messing about trying to get a gel out of your back pocket, bite the top off, swallow, etc. Just slow as much as you need to and continue when done, I reckon. No point overcomplicating things.