Eat before the morning workout?

[GqArtguy]

Originally posted by Faraz421:
Training girl: To the best of my knowledge, caffiene mixed with carbs would mean the carbs get stored pretty fast, and you end up with more fat, instead of utilizing the fat that was mobilized.
I would take the protein simply to provide something to possibly prevent serious catabolism.

Dont worry about that, seriously.

Caffeine increases exogenous carbohydrate oxidation during exercise.

Yeo SE, Jentjens RL, Wallis GA, Jeukendrup AE.

School of Sport and Exercise Sciences, University of Birmingham, Birmingham, United Kingdom.

Both carbohydrate (CHO) and caffeine have been used as ergogenic aids during exercise. It has been suggested that caffeine increases intestinal glucose absorption, but there are also suggestions that it may decrease muscle glucose uptake. The purpose of the study was to investigate the effect of caffeine on exogenous CHO oxidation.
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In conclusion, compared to glucose alone, 5 mg/kg/h of caffeine coingested with glucose increases exogenous CHO oxidation possibly as a result of an enhanced intestinal absorption.


Caffeine is associated with decreased insulin sensitivity, but that by itself doesnt mean anything because during and after your workout, your muscles take up glucose independent of insulin anyway, so caffeine shouldn't have much of an effect here. Caffeine can reduce insulin sensitivity after training as well, and reduced sensitivity will also limit the response of insulin on protien synthesis.

When you want to gain muscle, pro/carbs are your best friend. But lets not forget, pro/fat meals can work wonders pre workout as well!

Calories are your best friend when you want to gain muscle. I agree that P+F meals are yummy even preworkout [img]smile.gif[/img]


Edit: for some reason, the forum wont let me post the details of the study with all of the parentheses and stuff because its getting confused about the html tags and crap. I can try to PM it to anyone who wants it.

[Faraz421]

So your saying that caffiene with carbs (and ofcourse with protien) would be more conduscive to a morning cardio session in which the goal was to burn fat? =)!?

[gobbla]

sweet, whey and pepsi shakes from here on in

[Faraz421]

I found the article, wouldnt let me post it either, heres a link:
http://jap.physiology.org/cgi/conten...t/00170.2005v1

In the study they dont test caffiene alone. We know that carb + caffiene will be more exogenous than glucose alone, caffiene being the main variable. But if caffiene alone can match oxidation rates, wouldnt it fair better than caff + carb because of the higher oxidation rates and lack of carbs ingested with it, it would more effectively burn fat. ?

[gobbla]

I didn't think the glucose during workouts were primarily for fat oxidation?

getting 100cal worth of controlled carbs shouldn't impact your diet a great deal and would give a boost to the workout...more cal burned overall=more fat loss\muscle gain.

[Faraz421]

good point gobbla... well, from here on in, pre and post am cardio work im taking 1scoop whey + 1/2c skim milk...

and thats a mix of choch and vanila ON Whey in the milk... I swear it tastes absolutely amazing if you spoon stir it in!

[TrainingGirl]

Please forgive my ignorance...learning here...can someone explain exactly what "exogenous carbohydrate oxidation" is?

Thank ya' [img]smile.gif[/img]

[gobbla]

I think it means something along the lines of "carb absorbion\utalization *influenced* by way of an un-natural source"

but I'm wrong a LOT. [img]smile.gif[/img]

[von_Hayes]

exogenous cho are ingested cho's like from food sources.
endogenous cho's are what is made in the body like from the liver etc.

[von_Hayes]

"Approximately 6-23% of all carbohydrate foods may be lost enroute cannibalized to privide a source of energy for digestive energy sources. Coleman, Noakes, and others (in carbohydrate oxidative research) agree that from least to most is 1.0-1.1 grams carbohdyrate oxidized from exogenous-to-endogenous carbohydrate sources (blood sugar, glycogen oxidized). A 1.0 g carb cal per minute is 240 carb cal per hour. A 1.1 g carb cal per minute is 264 carb cal per hour. The interpreted means for minimum intake is 254.4 calories to obtain 240 calories per hour (1.0 per minute with 6% lost in route). The absolute upper maximum is 324.72 carb calories required in order to regenerate 264 carb calories (1.1 per minute with 23% lost in route) at the metabolization production point for energy. I take the conservative side and underdose finding through trial and error that overdose only induced gastric stress disorders and reduced performance dependant on some-not-much carbohydrate intake before and during the event."
this is from coyle

[Faraz421]

HAHAH! thanks von hayes, incase it was my post which caused the confusion, im sorry, i was thinking of a word that had to do with 'burning fat' and now am at a loss for what that word even is, terribly sorry everyone

[gobbla]

ahhhhh, that makes sense.

Thx Von_Hayes

[GqArtguy]

Originally posted by Faraz421:
So your saying that caffiene with carbs (and ofcourse with protien) would be more conduscive to a morning cardio session in which the goal was to burn fat? =)!?

What im saying is that as its transient and unimportant. If it were an issue, no body would take EC when bulking or cutting.

Youre doing this because you probably read somewhere that caffeine makes you insulin resistant and youll use fat for fuel. Thats all well and good, but like I said, caffeine can reduce insulin sensitivity after training as well, and reduced sensitivity will also limit the response of insulin on protien synthesis. Plus, youre on an empty tank to begin with which Von Hayes has noted, will allow muscle to be used during the waking hour. Just eat something and stop worry about an "edge" youll get from caffiene or whatever.

[Faraz421]

Will Do