Less carbohydrate with ATPPCr as energy system

K

Karky

2
So in another thread someone said something about carbs and the ATPPCr system.

fit4life1976 said:
What exactly? If you ran 100 m for example your nutrition does not need a lot of carbs since they are not necessary for the sprint but it does need creatine supplementation for quick Pcr replenishment.
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This made me think a bit, and I came with this reply:

It's not all black and white like that, the energy systems overlap, but you use mostly the ATPPCr during short intense bousts of exercise.
However, what about replenishing during resting periods between sets? I would think glycogen would be used there.. but I'm not 100% sure as I don't know the process (hope someone else does, though)

not to mention that most people won't be able to run 100 meters flat out without seriously going into anaerobic glycolysis towards the end.

If you need less carbs when you do short intense exercise is an interesting question though, makes me think. I would love a discussion on this, but maybe we would have to move that to another thread :p
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What do you guys think? Would activities that mostly involve the use of the ATPPCr system require less carbs in the diet than other activities? And by less carbs, I'm thinking less glycogen in the muscle, since the ATPPCr system doesn't require glycogen to "recharge" ATP, creatine does it.

Like I mentioned in my reply to him, you would probably need some.

Does anyone know if the recharging of ATP between sets would use glycogen? I would think so, but even if it did, you could probably still get away with less glycogen in your muscles if you did ATPPCr heavy training.

I realize this falls in the category of really overthinking stuff, but I can't help it, I've got a question that's interesting, and if the difference wouldn't really mean anything in a practical setting, I still want to know the difference :p

Thoughts?
 
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short sprints are similar to weights ie doing sets,same rule applys as soon as your body runs out of its energy source it will start to release cortisol and that will use muscle,thats providing you have no carbs in your system im guessing you mean.
 
buzz said:
short sprints are similar to weights ie doing sets,same rule applys as soon as your body runs out of its energy source it will start to release cortisol and that will use muscle,thats providing you have no carbs in your system im guessing you mean.
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I'm not saying no carbs. but can you get away with less glycogen in your muscles with sprinting/weightlifting than with endurance sports?
 
I may have a bit of info for you on this one:

It has been shown that ATP concentration in the muscle does drop more that 60% from initial resting values even during intense exercise.

It takes about 3-5 minutes to resynthesize ATP to resting values in large by AEROBIC metabolism, which requires glucose. Also, because of this, it has also been shown that one of the primary factors of EPOC is because of ATP and CP resynthesis

The more you train the ATP-CP system, you are more likely to require less glucose, although it will not hurt performance, even with sprinters
 
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