chi_town said:
Man, how did I miss this thread.
I think this really is more complicated than some here have led us to believe. The PW shake does many things as we all know. Which thing is more important........I';m not sure.....but IMO increasing glycogen synthisis, glycogen storage....as well as generally getting the body QUICKLY out of the catabolic state it is from training must surely be what is optimal.
PEACE
If we look at just those points, I have you covered.
1. Increasing glycogen synthesis? Its not changed with either
Carbohydrate nutrition before, during, and after exercise.
Costill DL.
The role of dietary carbohydrates (CHO) in the resynthesis of muscle and liver glycogen after prolonged, exhaustive exercise has been clearly demonstrated. The mechanisms responsible for optimal glycogen storage are linked to the activation of glycogen synthetase by depletion of glycogen and the subsequent intake of CHO. Although diets rich in CHO may increase the muscle glycogen stores and enhance endurance exercise performance when consumed in the days before the activity, they also increase the rate of CHO oxidation and the use of muscle glycogen. When consumed in the last hour before exercise, the insulin stimulated-uptake of glucose from blood often results in hypoglycemia, greater dependence on muscle glycogen, and an earlier onset of exhaustion than when no CHO is fed. Ingesting CHO during exercise appears to be of minimal value to performance except in events lasting 2 h or longer.
The form of CHO (i.e., glucose, fructose, sucrose) ingested may produce different blood glucose and insulin responses, but the rate of muscle glycogen resynthesis is about the same regardless of the structure.
2. Glyocgen storage? Well both can do this.
Effect of different types of high carbohydrate diets on glycogen metabolism in liver and skeletal muscle of endurance-trained rats.
Garrido G, Guzman M, Odriozola JM.
Department of Human Performance, National Institute of Physical Education, Madrid, Spain.
Male Wistar rats were fed ad libitum four different diets containing fructose, sucrose, maltodextrins or starch as the source of carbohydrate (CH). One group was subjected to moderate physical training on a motor-driven treadmill for 10 weeks (trained rats). A second group received no training and acted as a control (sedentary rats). Glycogen metabolism was studied in the liver and skeletal muscle of these animals. In the sedentary rats, liver glycogen concentrations increased by 60%-90% with the administration of simple CH diets compared with complex CH diets, whereas skeletal muscle glycogen stores were not significantly affected by the diet. Physical training induced a marked decrease in the glycogen content in liver (20%-30% of the sedentary rats) and skeletal muscle (50%-80% of the sedentary rats) in animals fed simple (but not complex) CH diets. In liver this was accompanied by a two-fold increase of triacylglycerol concentrations. Compared with simple CH diets, complex CH feeding increased by 50%-150% glycogen synthase (GS) activity in liver, whereas only a slight increase in GS activity was observed in skeletal muscle. In all the animal groups, a direct relationship existed between tissue glucose 6-phosphate concentration and glycogen content (r = 0.9911 in liver, r = 0.7177 in skeletal muscle). In contrast, no relationship was evident between glycogen concentrations and either glycogen phosphorylase activity or adenosine 5'-monophosphate tissue concentration.
The results from this study thus suggest that for trained rats diets containing complex CH (compared with diets containing simple CH) improve the glycogenic capacity of liver and skeletal muscle, thus enabling the adequate regeneration of glycogen stores in these two tissues.
3. Getting the body out of catabolic state? Insulin does this, not glyocgen. Not to emtion your not that catabolic post workout due to increased GH secretions. Even if it was glyogen, the fist phase of glycogen replenishment is insulin independent, so whats the point of creating a large spike if its not needed?
If those are your requirements, I've done it. Is it better? Nobody said that but it much less risky and overall more healthy in the long run while producing the same results. In some, the results seem better with increased energy, more fat lose witht the same LBM gains, less of a crash, etc....
Just pullin' your leg, brutha. You are the King, and you know it. But even the King needs his lowly peasants from time to time.
Thats usually how it works though....hehe
I'm not sure I am that convinced.