That is false. He would not be using the blood glucose or liver glycogen to fuel his cycling anyway. Muscle glycogen is the fuel that he will be using. Blood glucose & liver glycogen are not accessible to muscle. ATP synthesis is happening on a cellular level inside the muscle. That is why "carb loading" is used for endurance sports such as cycling, triathlon, marathon. The idea is to load the muscle with glycogen.I mean that within 60-15 min before the ride, he shouldnt eat any carbs because the insulin released when the carbs are digested will not allow him to use blood glucose, liver glycogen, or fats as fuel. It will only let him use muscle glycogen as a fuel so he'll run out of energry alot faster than he would if he hadnt eaten carbs. And the post workout nutrition is extremely important because it determines recovery and the ability to perform well for the next ride so dont forget to emphasize that.
No offense taken. Tested on the subject or not, blood glucose is not the source. Blood glucose and liver glycogen will be used to replete muscle glycogen.I disagree with you. Aerobic glycolysis, or using carbs as the fuel for aerobic work bouts, is reliant on these three accesible sources: muscle glycogen, liver glycogen (which is carried by the blood in the form of blood glucose), and blood glucose. Granted muscle glycogen yields greater amounts of ATP per molecule, but the body will still use the glucose from the blood when glycogen levels reach 3gr/kg of bodyweight. The lower ATP yield from the glucose will then result in lower energy output. So if you eat 60-15 min before you only get to use muscle glycogen, which means you run out of energy a lot faster.
No offense, johnny21, but I was just tested on this topic.
I think there is just a disconnect in our communication.I guess we'll just have to agree to disagree
Sounds like an informal version of "carb loading" It is effective. Fuller feeling due to more glycogen and water in muscle.Perhaps I will make a fool of myself by saying this, but, I will say it anyway. Take my opinion with a grain of salt as I have no degrees, or any scientific knowledge, but, I have cycled a few times and this seemed to work for me.
The third day out from the event I will stop eating carbohydrates and try to get rid of whatever "glycogen??" that is contained in the muscles. Usually this results in me looking rather "small and flat". However I do keep protein intake very high. The day before, or starting the morning of, if the event is late evening, I eat tons of oats, brown rice, and good slow carbs rather frequently, as it seems the body swells up. This seems to help somehow by adding more "glycogen??" back into the body. About 15 mins out I have some Cytomax and about 4 Tablespoons of BCAAS.
I could be completely in error here, as I have no clue what I am talking about, but I do know that when I have done this, I have had decent energy while cycling.
Immediately afterwards, I tend to just have 60 grams of protein with BCAAS, a bagel and some Cytomax. Also, 5-10 g of Glutamine. Then in about 30 minutes I have a decent sized meal.
Just my thoughts for whatever they are worth... if they help, I'm glad, if they don't, I hope someone has a good answer for you.
-T
I believe I get what you are saying. The presence of insulin will hinder nutrient utilization.I guess we'll just have to agree to disagree