On the topic for a pretty conclusive answer here goes.
Because glyocgen depletion and catabolism is highly overated post exercise. The hormonal respons to exercise in itself in anti-catabolic in nature. This is also the time when nutrient signaling is at its highest so the need for such a drastic insulin spike is not necessary. There has been no study confirming that the faster you restore glyogen stores the faster protein synthesis occurs. In fact protein synthesis is at its highest 24 hours after exercise. If proper nutrition is followed the need for a large amount of fast acting glucose is not warranted. There is also the the fact the glyocgen synthesis is biphasic and the frist stage (30 minutes post exercise) is insulin indpendent. This stage is more reliable on available amino acids as a substate rather than glucose. Exercise in itself increases glut4 permeability so the increased amounts of insulin are not needed to achieve this to improve trnasport. This is just some of the reasons I recommend a slower more stable release of insulin that will coincided wiht the second phase of glycogen resynthesis. Thjere is also the the reaosn of increased glucose storage due to a high insulin spike. Studies show that not all glucsoe in absorbed by the exercised muscle and there is increase chances of this being utilized by other tissues, adipose tissue being one of them
The pattern of muscle glycogen synthesis PWO is bi-phasic. The initial fast phase lasts around 30 minutes and happens WITHOUT THE PRESENCE OF INSULIN. So essentially by ingesting a FAST source of CHO, you're creating a situation that happens even without the intake.
Why do you need to create a situation that happens no matter what?
The bottom line is that fast levels of glycogen reloading doesn't result in faster protein synthesis.
Thus if both sources of carbs work then why ingest high GI it's obviously more likely to be stored as adipose tissue. |