Re: Amount of carbs to consum per hour - Page 2 - Cycling Mob: Road Cycling, Mountain Biking and More

12-25-2006, 12:16 PM

"nash" <[Only registered and activated users can see links. ]> wrote:

> Also, he said the protein is attached to fat and they are both slow
> burning/assimilated. Well, that is exactly what you want in any
> endurance race. IE anything longer than 20 minutes.

Slow burning? I'm again confused. I see no need for a slow burning
fuel like protein in a race. The muscles are using carbohydrate
faster than the body can take it in. You want the fuel that will get
to the working muscles as quickly as possible, and that fuel is
simple carbohydrate. That's what muscles need to do work.

The purpose of fueling during a race is to keep from running out of
glycogen. When glycogen stores run out, you are forced to rely on
the slower fat metabolism, and you must slow way down.

> I believe 20 minutes is when the muscle glycogen runs out.

90 minutes is the commonly accepted figure, assuming no carb intake
during exercise.

> Their sport drink has all that figured out.

If you're talking about Hammer products, take their marketing
information with a very large grain of salt. Some of their claims
are pretty slim on the science.

FYI, here is a very recent study of protein used during exercise:

van Essen, Gibala: "Failure of protein to improve time trial
performance when added to a sports drink"

CONCLUSION: Ingesting 6% carbohydrate at a rate of 1 L.h(-1) (60
g.h(-1)) improved an 80-km TT performance in trained male cyclists.
However, adding 2% protein to a 6% carbohydrate drink provided no
additional performance benefit during a task that closely simulated
the manner in which athletes typically compete.

[Only registered and activated users can see links. ]

--
terry morse - Undiscovered Country Tours - [Only registered and activated users can see links. ]

12-25-2006, 01:23 PM

"Terry Morse" <[Only registered and activated users can see links. ]> wrote in message
news:[Only registered and activated users can see links. ]...
> "nash" <[Only registered and activated users can see links. ]> wrote:
>
>> Also, he said the protein is attached to fat and they are both slow
>> burning/assimilated. Well, that is exactly what you want in any
>> endurance race. IE anything longer than 20 minutes.
>
> Slow burning? I'm again confused. I see no need for a slow burning
> fuel like protein in a race. The muscles are using carbohydrate
> faster than the body can take it in. You want the fuel that will get
> to the working muscles as quickly as possible, and that fuel is
> simple carbohydrate. That's what muscles need to do work.
>
> The purpose of fueling during a race is to keep from running out of
> glycogen. When glycogen stores run out, you are forced to rely on
> the slower fat metabolism, and you must slow way down.
>
>> I believe 20 minutes is when the muscle glycogen runs out.
>
> 90 minutes is the commonly accepted figure, assuming no carb intake
> during exercise.
>
>> Their sport drink has all that figured out.
>
> If you're talking about Hammer products, take their marketing
> information with a very large grain of salt. Some of their claims
> are pretty slim on the science.
>
> FYI, here is a very recent study of protein used during exercise:
>
> van Essen, Gibala: "Failure of protein to improve time trial
> performance when added to a sports drink"
>
> CONCLUSION: Ingesting 6% carbohydrate at a rate of 1 L.h(-1) (60
> g.h(-1)) improved an 80-km TT performance in trained male cyclists.
> However, adding 2% protein to a 6% carbohydrate drink provided no
> additional performance benefit during a task that closely simulated
> the manner in which athletes typically compete.
>
> [Only registered and activated users can see links. ]
>
>
> --
> terry morse - Undiscovered Country Tours -
[Only registered and activated users can see links. ]

Thanks