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Yeah, I woke up one day and thought; 'What can I say to be controversial?' And figured I'd pick on glutamine.
Let's see the double blind studies that show that oral ingestion of glutamine increased muscle tissue in trained athletes. I don't need several. JUST ONE.
It's always in people who never trained before, or in the elderly or in trauma patients or it's with IV. NEVER is it oral gluatimine in trained athletes. NEVER.
But the supplement companies know how to twist the facts and make them sound very scientific, which the more knowledable bodybuilder eats up. He then, in turn, unwittingly espouses these erroneous beliefs and is rarely questioned because A: other advanced BB's read the same stuff.and B: Less knowledgable BB's won't argue what they don't know about.
But it still does nothing.
Let's see the double blind studies that show that oral ingestion of glutamine increased muscle tissue in trained athletes. I don't need several. JUST ONE.
It's always in people who never trained before, or in the elderly or in trauma patients or it's with IV. NEVER is it oral gluatimine in trained athletes. NEVER.
But the supplement companies know how to twist the facts and make them sound very scientific, which the more knowledable bodybuilder eats up. He then, in turn, unwittingly espouses these erroneous beliefs and is rarely questioned because A: other advanced BB's read the same stuff.and B: Less knowledgable BB's won't argue what they don't know about.
But it still does nothing.
Alfons, why do you have this need for supplementing with a single amino acid? protein and carbohydrates in a certain proportion have been shown to maximize gluscose uptake after exercise. I can post the study if you like. It is a simple and inexpensive solution to post workout supplementation.
jb
jb
Thanks hhadjo: as you know, it is difficult to find studies that exactly match up to the questions that we want answered. Here are a couple more that address the use of supplemental glutamine on performance in trained athletes. In all cases the glutamine was found to have no useful effect.
jb
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J Strength Cond Res 2002 Feb;16(1):157-60 Related Articles, Links
The effects of high-dose glutamine ingestion on weightlifting performance.
Antonio J, Sanders MS, Kalman D, Woodgate D, Street C.
Sports Science Laboratory, University of Delaware, Newark, Delaware 19716, USA.
The purpose of this study was to determine if high-dose glutamine ingestion affected weightlifting performance. In a double-blind, placebo-controlled, crossover study, 6 resistance-trained men (mean +/- SE: age, 21.5 +/- 0.3 years; weight, 76.5 +/- 2.8 kg(-1)) performed weightlifting exercises after the ingestion of glutamine or glycine (0.3 g x kg(-1)) mixed with calorie-free fruit juice or placebo (calorie-free fruit juice only). Each subject underwent each of the 3 treatments in a randomized order. One hour after ingestion, subjects performed 4 total sets of exercise to momentary muscular failure (2 sets of leg presses at 200% of body weight, 2 sets of bench presses at 100% of body weight). There were no differences in the average number of maximal repetitions performed in the leg press or bench press exercises among the 3 groups. These data indicate that the short-term ingestion of glutamine does not enhance weightlifting performance in resistance-trained men.
============================================
Int J Sports Med 2000 Jan;21(1):25-30 Related Articles, Links
The effect of free glutamine and peptide ingestion on the rate of muscle glycogen resynthesis in man.
van Hall G, Saris WH, van de Schoor PA, Wagenmakers AJ.
Department of Human Biology, Maastricht University, The Netherlands. [email protected]
The present study investigated previous claims that ingestion of glutamine and of protein-carbohydrate mixtures may increase the rate of glycogen resynthesis following intense exercise. Eight trained subjects were studied during 3 h of recovery while consuming one of four drinks in random order. Drinks were ingested in three 500 ml boluses, immediately after exercise and then after 1 and 2 h of recovery. Each bolus of the control drink contained 0.8 g x kg(-1) body weight of glucose. The other drinks contained the same amount of glucose and 0.3 g x kg(-1) body weight of 1) glutamine, 2) a wheat hydrolysate (26% glutamine) and 3) a whey hydrolysate (6.6% glutamine). Plasma glutamine, decreased by approximately 20% during recovery with ingestion of the control drink, no changes with ingestion of the protein hydrolysates drinks, and a 2-fold increase with ingestion of the free glutamine drinks. The rate of glycogen resynthesis was not significantly different in the four tests: 28 +/- 5, 26 +/- 6, 33 +/- 4, and 34 +/- 3 mmol glucosyl units x kg(-1) dry weight muscle x h(-1) for the control, glutamine, wheat- and whey hydrolysate ingestion, respectively. It is concluded that ingestion of a glutamine/carbohydrate mixture does not increase the rate of glycogen resynthesis in muscle. Glycogen resynthesis rates were higher, although not statistically significant, after ingestion of the drink containing the wheat (21 +/- 8%) and whey protein hydrolysate (20 +/- 6%) compared to ingestion of the control and free glutamine drinks, implying that further research is needed on the potential protein effect.
===========================================
J Sports Med Phys Fitness 1998 Sep;38(3):240-4 Related Articles, Links
Acute L-glutamine ingestion does not improve maximal effort exercise.
Haub MD, Potteiger JA, Nau KL, Webster MJ, Zebas CJ.
Exercise Physiology Laboratory, University of Kansas, Lawrence 66045, USA.
BACKGROUND: L-glutamine (GLN) may have an ergogenic effect during exercise considering its base generating potential. We attempted to determine whether GLN ingestion influences acid-base balance and improves high intensity exercise performance. METHOD: Ten trained males performed five exercise bouts on a cycle ergometer at 100% of VO2 peak. The first four bouts were 60 sec in duration, while the fifth bout was continued to fatigue. Each bout was separated by 60 sec of recovery. The exercise bouts were initiated 90 min after ingesting 0.03 g.kg body mass-1 of either GLN or placebo (PLC). Venous blood samples were collected pre-ingestion (PRE-IN), pre-exercise (PRE-EX), and following bouts four (B4) and five (B5) and analyzed for pH, bicarbonate concentration (HCO3), and lactate concentration (La-). Time to fatigue for B5 was used as a performance measure. RESULTS: pH, [HCO3], and [La-] were not significantly different (p > 0.05) between conditions for PRE-IN, PRE-EX, B4, and B5. Time to fatigue was not significantly different between conditions and averaged 263.4 +/- 24.5 sec and 263.2 +/- 19.4 sec for the GLN and PLC trials, respectively. CONCLUSIONS: These data indicate that acute ingestion of L-glutamine does not enhance either buffering potential or high intensity exercise performance in trained males.
===========================================
jb
============================================
J Strength Cond Res 2002 Feb;16(1):157-60 Related Articles, Links
The effects of high-dose glutamine ingestion on weightlifting performance.
Antonio J, Sanders MS, Kalman D, Woodgate D, Street C.
Sports Science Laboratory, University of Delaware, Newark, Delaware 19716, USA.
The purpose of this study was to determine if high-dose glutamine ingestion affected weightlifting performance. In a double-blind, placebo-controlled, crossover study, 6 resistance-trained men (mean +/- SE: age, 21.5 +/- 0.3 years; weight, 76.5 +/- 2.8 kg(-1)) performed weightlifting exercises after the ingestion of glutamine or glycine (0.3 g x kg(-1)) mixed with calorie-free fruit juice or placebo (calorie-free fruit juice only). Each subject underwent each of the 3 treatments in a randomized order. One hour after ingestion, subjects performed 4 total sets of exercise to momentary muscular failure (2 sets of leg presses at 200% of body weight, 2 sets of bench presses at 100% of body weight). There were no differences in the average number of maximal repetitions performed in the leg press or bench press exercises among the 3 groups. These data indicate that the short-term ingestion of glutamine does not enhance weightlifting performance in resistance-trained men.
============================================
Int J Sports Med 2000 Jan;21(1):25-30 Related Articles, Links
The effect of free glutamine and peptide ingestion on the rate of muscle glycogen resynthesis in man.
van Hall G, Saris WH, van de Schoor PA, Wagenmakers AJ.
Department of Human Biology, Maastricht University, The Netherlands. [email protected]
The present study investigated previous claims that ingestion of glutamine and of protein-carbohydrate mixtures may increase the rate of glycogen resynthesis following intense exercise. Eight trained subjects were studied during 3 h of recovery while consuming one of four drinks in random order. Drinks were ingested in three 500 ml boluses, immediately after exercise and then after 1 and 2 h of recovery. Each bolus of the control drink contained 0.8 g x kg(-1) body weight of glucose. The other drinks contained the same amount of glucose and 0.3 g x kg(-1) body weight of 1) glutamine, 2) a wheat hydrolysate (26% glutamine) and 3) a whey hydrolysate (6.6% glutamine). Plasma glutamine, decreased by approximately 20% during recovery with ingestion of the control drink, no changes with ingestion of the protein hydrolysates drinks, and a 2-fold increase with ingestion of the free glutamine drinks. The rate of glycogen resynthesis was not significantly different in the four tests: 28 +/- 5, 26 +/- 6, 33 +/- 4, and 34 +/- 3 mmol glucosyl units x kg(-1) dry weight muscle x h(-1) for the control, glutamine, wheat- and whey hydrolysate ingestion, respectively. It is concluded that ingestion of a glutamine/carbohydrate mixture does not increase the rate of glycogen resynthesis in muscle. Glycogen resynthesis rates were higher, although not statistically significant, after ingestion of the drink containing the wheat (21 +/- 8%) and whey protein hydrolysate (20 +/- 6%) compared to ingestion of the control and free glutamine drinks, implying that further research is needed on the potential protein effect.
===========================================
J Sports Med Phys Fitness 1998 Sep;38(3):240-4 Related Articles, Links
Acute L-glutamine ingestion does not improve maximal effort exercise.
Haub MD, Potteiger JA, Nau KL, Webster MJ, Zebas CJ.
Exercise Physiology Laboratory, University of Kansas, Lawrence 66045, USA.
BACKGROUND: L-glutamine (GLN) may have an ergogenic effect during exercise considering its base generating potential. We attempted to determine whether GLN ingestion influences acid-base balance and improves high intensity exercise performance. METHOD: Ten trained males performed five exercise bouts on a cycle ergometer at 100% of VO2 peak. The first four bouts were 60 sec in duration, while the fifth bout was continued to fatigue. Each bout was separated by 60 sec of recovery. The exercise bouts were initiated 90 min after ingesting 0.03 g.kg body mass-1 of either GLN or placebo (PLC). Venous blood samples were collected pre-ingestion (PRE-IN), pre-exercise (PRE-EX), and following bouts four (B4) and five (B5) and analyzed for pH, bicarbonate concentration (HCO3), and lactate concentration (La-). Time to fatigue for B5 was used as a performance measure. RESULTS: pH, [HCO3], and [La-] were not significantly different (p > 0.05) between conditions for PRE-IN, PRE-EX, B4, and B5. Time to fatigue was not significantly different between conditions and averaged 263.4 +/- 24.5 sec and 263.2 +/- 19.4 sec for the GLN and PLC trials, respectively. CONCLUSIONS: These data indicate that acute ingestion of L-glutamine does not enhance either buffering potential or high intensity exercise performance in trained males.
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MiniColemans
New member
when I run seriously, glutamine really helps me recover and lose less muscle. I know because its the only thing missing from my workouts now! lol. 
I did notice that I was less sick when I took 10g a day.
I did notice that I was less sick when I took 10g a day.Similar threads
