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nclifter6feet6
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anyone?
firstenrgy
New member
Anthrax is correct. Studies have shown that fructose will replenish liver glycogen before muscle glycogen. If your considering post workout nutrition. I would stay away from fructose for this reason. Another one to stay away from and is in far too many drinks is maltodextrin. It's a polysaccharide and is low glycemic. Not exactly what you want to promote an insulin reponse and drive aminos to muscle.
firstenrgy
firstenrgy
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augastes_stiranko
Guest
maltose also has a glycemic index higher than dextrose. maltose has a glycemic index of 105 which is the same as maltodextrin..
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plornive
New member
I believe that non-fructose carbs will initially bypass the liver and preferentially refill muscle glycogen after weight-training. The liver is the regulator of blood sugar, so the liver will only store glycogen if blood sugar is above baseline (insulin is high). If you take carbs post-workout with some ALA or vanadyl sulfate, the carbs will enter your muscle cells at a rate which does not allow blood sugar levels to get too far above baseline. Therefore, liver glycogen does not get filled as much as muscle glycogen. Muscle glycogen will be filled no matter what because glucose transport enzymes will be present, due to the weight-training. Your muscles will steal all the carbs from your poor little liver.
I have heard it is a good idea to take a small amount of fructose during or after exercise to prevent gluconeogenesis and promote muscle glycogen synthesis from the post-workout carbs + protein. Just a small amount.
I have heard it is a good idea to take a small amount of fructose during or after exercise to prevent gluconeogenesis and promote muscle glycogen synthesis from the post-workout carbs + protein. Just a small amount.
firstenrgy
New member
=w= said:
I call bulls@#t. I have seen this posted on the board before but it's still bulls@#t. It's up to you. Take a SIMPLE sugar or take a POLYsaccharide post workout. I'll stick with a simple sugar. One other thing. It if was higher glycemic than dextrose they would be using it for glucose tolerance tests instead of dextrose. So...
chillin408
New member
I can tell you from personal experience that I have seen a noticeable difference in muscle fullness depending on what type carbohydrate is most abundant in my post workout meal. Apple juice doesn't really do anything, but grape fruit juice makes my muscles appear fuller and I notice it right after I drink it. The reason for this is that Grape juice contains a higher percentage of Glucose than apple juice.
I was just trying to find some stuff on this topic at PubMed, but I had a devil of a time; I found some conflicting things. Well, here is one supporting glucose feeding(GF) versus Fructose feeding(FF):
Muscle glycogen recovery after exercise during glucose and fructose intake monitored by 13C-NMR.
Van Den Bergh AJ, Houtman S, Heerschap A, Rehrer NJ, Van Den Boogert HJ, Oeseburg B, Hopman MT.
Department of Radiology, University of Nijmegen, The Netherlands.
The purpose of this study was to examine muscle glycogen recovery with glucose feeding (GF) compared with fructose feeding (FF) during the first 8 h after partial glycogen depletion using 13C-nuclear magnetic resonance (NMR) on a clinical 1.5-TNMR system. After measurement of the glycogen concentration of the vastus lateralis (VL) muscle in seven male subjects, glycogen stores of the VL were depleted by bicycle exercise. During 8 h after completion of exercise, subjects were orally given either GF or FF while the glycogen content of the VL was monitored by 13C-NMR spectroscopy every second hour. The muscular glycogen concentration was expressed as percentage of the glycogen concentration measured before exercise. The glycogen recovery rate during GF (4.2 +/- 0.2%/h) was significantly higher (P < 0.05) compared with values during FF (2.2 +/- 0.3%/h). This study shows that 1) muscle glycogen levels are perceptible by 13 C-NMR spectroscopy at 1.5 T and 2) the glycogen restoration rate is higher after GF compared with after FF.
There is more, but there is also some that seems conflicting from what I saw.
I was just trying to find some stuff on this topic at PubMed, but I had a devil of a time; I found some conflicting things. Well, here is one supporting glucose feeding(GF) versus Fructose feeding(FF):
Muscle glycogen recovery after exercise during glucose and fructose intake monitored by 13C-NMR.
Van Den Bergh AJ, Houtman S, Heerschap A, Rehrer NJ, Van Den Boogert HJ, Oeseburg B, Hopman MT.
Department of Radiology, University of Nijmegen, The Netherlands.
The purpose of this study was to examine muscle glycogen recovery with glucose feeding (GF) compared with fructose feeding (FF) during the first 8 h after partial glycogen depletion using 13C-nuclear magnetic resonance (NMR) on a clinical 1.5-TNMR system. After measurement of the glycogen concentration of the vastus lateralis (VL) muscle in seven male subjects, glycogen stores of the VL were depleted by bicycle exercise. During 8 h after completion of exercise, subjects were orally given either GF or FF while the glycogen content of the VL was monitored by 13C-NMR spectroscopy every second hour. The muscular glycogen concentration was expressed as percentage of the glycogen concentration measured before exercise. The glycogen recovery rate during GF (4.2 +/- 0.2%/h) was significantly higher (P < 0.05) compared with values during FF (2.2 +/- 0.3%/h). This study shows that 1) muscle glycogen levels are perceptible by 13 C-NMR spectroscopy at 1.5 T and 2) the glycogen restoration rate is higher after GF compared with after FF.
There is more, but there is also some that seems conflicting from what I saw.
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Creatureofnight
New member
Ideally it would be great for you to take mixture of maltodextrin and dextrose. Reason being, the dextrose and malto are both high glycemic and will spike insulin levels and refill musle glycogen BUT the malto gets to the muscles a fraction slower that dextrose because it has a longer chain and is more complex. This will act like a filter and fill and release a tad slower than the dextrose and will refill glycogen very efficiently.
You also dont have to turn the world upside down to get a malto dextrose mixture.
Just simply purchase your fav. mrp ( almost all use malto as their exclusive carb) and throw in dextrose or glucose powder ( gatorade will also work).
Once again this is and IDEAL way to refill lossed glycogen after a workout. As long as you take in sufficient carbs postworkout, you will be fine. Its just that the ones you choose will determine how fast and effecient glycogen is replaced. This is also why i would aviod fructose postworkout unless it is mixed w/ glucose, which will speed up the process of how its abosorbed.
You also dont have to turn the world upside down to get a malto dextrose mixture.
Just simply purchase your fav. mrp ( almost all use malto as their exclusive carb) and throw in dextrose or glucose powder ( gatorade will also work).
Once again this is and IDEAL way to refill lossed glycogen after a workout. As long as you take in sufficient carbs postworkout, you will be fine. Its just that the ones you choose will determine how fast and effecient glycogen is replaced. This is also why i would aviod fructose postworkout unless it is mixed w/ glucose, which will speed up the process of how its abosorbed.
