Kingdime1332
February 14th, 2006, 08:44 AM
Ok so Cytosport has two articles on during workout drinks, one being why proteins and amino acids are not necessary in a during workout drink.
Why Protein in Sports Drinks Don’t Mix
by Dr. George Brooks
"The Body's Desired Fuels During Aerobic Activities"
Some sports drinks contain proteins for one reason; those concocting them don’t know basic physiology and metabolism. Contrary to the notions of some people, proteins, and to a lesser extent, amino acids are not always appropriate for use as sports supplements and a primary example of the misuse of proteins in supplements is their inclusion in hydration beverages taken during training and competition. Here are some of the reasons for not including proteins in a sports drink:
· Proteins are not major energy sources for muscle work;
· Proteins need to be digested to amino acids before they can be absorbed from the digestive system into the blood; this makes proteins slow to be assimilated;
· Worse, inclusion of proteins slows assimilation of the other constituents in a sports drink, namely fluid, carbohydrate energy sources and electrolytes in the drink, and
· Proteins as commonly available in whey residues often taste bad; this discourages consumption of hydration beverages by athletes working hard in hot environments who sometimes need every drop of fluid they can assimilate.
The Crossover Concept[1] is the major contemporary model of fuel energy utilization during physical activity. According to this concept, in a resting postabsorptive person (i.e., someone has fasted 12-hr. overnight), fats are the major fuel in muscles and at the whole body level. In this context, proteins will represent < 10% of the energy used. But, as exercise starts, the use of fats increases somewhat, but the use of carbohydrates increases more. Then as exercise power output rises from mild to moderate, through hard and on to maximal exercise intensities, the use of carbohydrates rises exponentially. Peak fat oxidation occurs at about 45-50% max[2], and declines thereafter as the body switches (‘crosses over to’) to almost exclusive carbohydrate[3] oxidation. In working muscle biochemical processes are optimized to provide energy rapidly and with the greatest oxygen use efficiency; these mechanisms open the gates to carbohydrate use and shut the doors to use of fats, proteins and amino acids.
In addition to being poor energy sources for muscle work, proteins in the diet slow digestion and absorption. First, proteins need to be digested to amino acids, and then the amino acids need to be absorbed. In contrast to carbohydrates (lactate and sugars), electrolytes and water that are absorbed at the beginning of the small intestine, amino acids are absorbed lower down. So when vendors mistakenly add proteins to sports drinks to provide some mythical benefit, they inadvertently make the drink content more concentrated and delay absorption of the efficacious substances in the drink.
So, why include proteins in a spots drink, who knows why ?! Why give the athlete something not used and why give them something that will slow assimilation and use of the fluids, electrolytes and energy they need during activity. Certainly proteins and amino acids can be beneficial during recovery from exercise when the body’s anabolic process are heightened, but providing proteins and most amino acids during training or competition has no plausibility.
--------------------------------------------------------------------------------
Footnotes:
[1] Brooks, G.A. Importance of the “Crossover Concept” in exercise Metabolism. Clin. Exp. Pharm. Physiol. 24:889-895, 1997.
[2] Max in the sense of maximal oxygen consumption, or VO2max
[3] The carbohydrates used are: glycogen, lactate, glucose
I would have linked it but the link is just to the main cytosport website. Now from the same website this is a article about Cytomax.
HOW CYTOMAX DIFFERS FROM OTHER SPORT DRINKS
Cytomax is a fluid and electrolyte replacement drink like no other. It goes beyond just delivering sodium, potassium and sugars, which is what most sport drinks supply. It provides the athlete with an organic and inorganic form of Polylactate, sodium and potassium succinates as well as the amino acids L-glutamine and L-alanine. All these compounds work together to give the athlete a venue of rehydration, electrolyte replacement, energy fuel, and a buffer that allows them to effectively reduce muscle cramping. This translates into better performance and decreased recovery time.
ALPHA-L-POLYLACTATE
Polylactate is a polymer of the lactate molecule. It is a series of L-lactate molecules bound together with amino acids and pyruvate. But, unlike lactic acid (C3H6O3), Polylactate is not an acid! Simply put, it is lactic acid with the acid component removed. Although not apparent, there is a difference.
By reacting the lactic acid with certain amino acids the acid leaves the resulting molecule. This allows the lactate to be utilized rapidly to supply energy, maintain blood sugar (glucose), and neutralize (buffer) acids that are naturally produced in the body, including lactic acid. You could then say that lactate serves to balance out the acidic pH induced by the presence of lactic acid.
When muscles use blood sugar or stored carbohydrate (glycogen), much of these carbohydrates end up as lactic acid, a very strong organic acid. Under normal conditions, almost all the lactic acid formed in the body breaks down to 98.9% lactate, and 1.1% hydrogen ions or protons. These protons are the acidic part of lactic acid. The production and removal of lactic acid are normally in balance so that despite rapid production, little accumulates. In the past, scientists believed that during exercise lactate was the "dead- end metabolite" which was produced as a result of insufficient oxygen being present which resulted in fatigue. In contrast, we know that lactic acid is produced all the time in many cells, tissues and in muscle, even at rest when there is plenty of oxygen around. Only when the production of lactic acid exceeds the rate of removal does the acid part of the molecule linger to cause a burning sensation and fatigue that makes the athlete want to quit activity.
Therefore, if muscle effectively uses carbohydrates faster than lipids, more energy is available for a given oxygen supply and muscles contract more forcefully when carbohydrates are used as fuels. Moreover, by releasing lactate during exercise, some muscles can fuel other muscles, including the heart which consumes and utilizes lactate from the blood. Additionally, the liver takes lactate from the blood and produces carbohydrate for the muscles during exercise! In fact, the liver consumes two lactates and two acid protons to make one sugar molecule.
From the above you can see that: If the body needs and uses lactate, but the body suffers if hydrogen ions accumulate and causes lactic acidosis, then provide the body with what it uses most rapidly, and give it something which will help remove the acid protons formed during exercise. The answer is Polylactate, because it restores the balance of salt and acid by providing lactate molecules, but without that acid component. End result- less muscle burning and fatigue.
The active ingredients in Cytomax are composed mainly of the organic compound, Polylactate, but also a small amount of inorganic potassium and sodium forms of lactate. In this case, lactate is used to carry and replenish the salts lost in sweat during exercise as well as stimulate thirst insuring hydration. However, relative to energy use, inorganic salt loss during exercise is slow. Therefore, should someone try and replace energy during exercise by using an inorganic salt such as sodium, potassium or calcium lactate, the lactate would rapidly be removed leaving a large salt load with dehydration being the end result. Instead, with the completely organic Polylactate in which amino acids are used to carry the lactate molecules, the body is provided substances all of which are useful during exercise and recovery.
AMINO ACIDS AND SUCCINATES
Cytomax also contains the amino acids L-glutamine and L-alanine, since these play a key roll in the process of gluconeogenesis and the removal of ammonium ions from the blood.
During exercise amino acids pools in skeletal muscle are compromised in order to deliver these glucose producing amino acids to the liver. There they will be deaminated and the carbon skeletons of most (mostly alanine) will be used for fuel. This process depletes muscle protein and consequently hinders muscle mass. By providing these two amino acids, Cytomax ensures that both plasma levels and intramuscular amino acids pools have enough aminos for fuel to go around.
Cytomax also contains Succinate ETF in the form of calcium, magnesium and potassium succinates, as well as inosine.
Succinates is a Krebs cycle intermediate. It occurs normally within aerobic cells, such as muscle. Succinate supplements such as Succinate ETF increase maximal oxygen consumption and high-intensity exercise capacity by enhancing the ability to use lactic acid as a fuel during exercise.
In summary, for replacing fluid and electrolytes, providing energy, stimulating body glucose production, buffering the effects of acids produced during exercise, maintaining amino acid pools in muscle and enhancing the use of lactic acid, consider using CYTOMAX which is blended with all of these processes in mind.
Ok my problem with them is that in one article it basically says that amino acids are not necessary and then in the article about the Cytomax it says they are necessary. Did anyone from Cytosport wanna check to see what they post on their website? I mean come on thats pretty ridicoulous
The reason I was looking for this in the first place was because I wanted to decide between using Accelerade during a workout or Cytomax, and I believe that Cytosport just helped me make my decision.
Why Protein in Sports Drinks Don’t Mix
by Dr. George Brooks
"The Body's Desired Fuels During Aerobic Activities"
Some sports drinks contain proteins for one reason; those concocting them don’t know basic physiology and metabolism. Contrary to the notions of some people, proteins, and to a lesser extent, amino acids are not always appropriate for use as sports supplements and a primary example of the misuse of proteins in supplements is their inclusion in hydration beverages taken during training and competition. Here are some of the reasons for not including proteins in a sports drink:
· Proteins are not major energy sources for muscle work;
· Proteins need to be digested to amino acids before they can be absorbed from the digestive system into the blood; this makes proteins slow to be assimilated;
· Worse, inclusion of proteins slows assimilation of the other constituents in a sports drink, namely fluid, carbohydrate energy sources and electrolytes in the drink, and
· Proteins as commonly available in whey residues often taste bad; this discourages consumption of hydration beverages by athletes working hard in hot environments who sometimes need every drop of fluid they can assimilate.
The Crossover Concept[1] is the major contemporary model of fuel energy utilization during physical activity. According to this concept, in a resting postabsorptive person (i.e., someone has fasted 12-hr. overnight), fats are the major fuel in muscles and at the whole body level. In this context, proteins will represent < 10% of the energy used. But, as exercise starts, the use of fats increases somewhat, but the use of carbohydrates increases more. Then as exercise power output rises from mild to moderate, through hard and on to maximal exercise intensities, the use of carbohydrates rises exponentially. Peak fat oxidation occurs at about 45-50% max[2], and declines thereafter as the body switches (‘crosses over to’) to almost exclusive carbohydrate[3] oxidation. In working muscle biochemical processes are optimized to provide energy rapidly and with the greatest oxygen use efficiency; these mechanisms open the gates to carbohydrate use and shut the doors to use of fats, proteins and amino acids.
In addition to being poor energy sources for muscle work, proteins in the diet slow digestion and absorption. First, proteins need to be digested to amino acids, and then the amino acids need to be absorbed. In contrast to carbohydrates (lactate and sugars), electrolytes and water that are absorbed at the beginning of the small intestine, amino acids are absorbed lower down. So when vendors mistakenly add proteins to sports drinks to provide some mythical benefit, they inadvertently make the drink content more concentrated and delay absorption of the efficacious substances in the drink.
So, why include proteins in a spots drink, who knows why ?! Why give the athlete something not used and why give them something that will slow assimilation and use of the fluids, electrolytes and energy they need during activity. Certainly proteins and amino acids can be beneficial during recovery from exercise when the body’s anabolic process are heightened, but providing proteins and most amino acids during training or competition has no plausibility.
--------------------------------------------------------------------------------
Footnotes:
[1] Brooks, G.A. Importance of the “Crossover Concept” in exercise Metabolism. Clin. Exp. Pharm. Physiol. 24:889-895, 1997.
[2] Max in the sense of maximal oxygen consumption, or VO2max
[3] The carbohydrates used are: glycogen, lactate, glucose
I would have linked it but the link is just to the main cytosport website. Now from the same website this is a article about Cytomax.
HOW CYTOMAX DIFFERS FROM OTHER SPORT DRINKS
Cytomax is a fluid and electrolyte replacement drink like no other. It goes beyond just delivering sodium, potassium and sugars, which is what most sport drinks supply. It provides the athlete with an organic and inorganic form of Polylactate, sodium and potassium succinates as well as the amino acids L-glutamine and L-alanine. All these compounds work together to give the athlete a venue of rehydration, electrolyte replacement, energy fuel, and a buffer that allows them to effectively reduce muscle cramping. This translates into better performance and decreased recovery time.
ALPHA-L-POLYLACTATE
Polylactate is a polymer of the lactate molecule. It is a series of L-lactate molecules bound together with amino acids and pyruvate. But, unlike lactic acid (C3H6O3), Polylactate is not an acid! Simply put, it is lactic acid with the acid component removed. Although not apparent, there is a difference.
By reacting the lactic acid with certain amino acids the acid leaves the resulting molecule. This allows the lactate to be utilized rapidly to supply energy, maintain blood sugar (glucose), and neutralize (buffer) acids that are naturally produced in the body, including lactic acid. You could then say that lactate serves to balance out the acidic pH induced by the presence of lactic acid.
When muscles use blood sugar or stored carbohydrate (glycogen), much of these carbohydrates end up as lactic acid, a very strong organic acid. Under normal conditions, almost all the lactic acid formed in the body breaks down to 98.9% lactate, and 1.1% hydrogen ions or protons. These protons are the acidic part of lactic acid. The production and removal of lactic acid are normally in balance so that despite rapid production, little accumulates. In the past, scientists believed that during exercise lactate was the "dead- end metabolite" which was produced as a result of insufficient oxygen being present which resulted in fatigue. In contrast, we know that lactic acid is produced all the time in many cells, tissues and in muscle, even at rest when there is plenty of oxygen around. Only when the production of lactic acid exceeds the rate of removal does the acid part of the molecule linger to cause a burning sensation and fatigue that makes the athlete want to quit activity.
Therefore, if muscle effectively uses carbohydrates faster than lipids, more energy is available for a given oxygen supply and muscles contract more forcefully when carbohydrates are used as fuels. Moreover, by releasing lactate during exercise, some muscles can fuel other muscles, including the heart which consumes and utilizes lactate from the blood. Additionally, the liver takes lactate from the blood and produces carbohydrate for the muscles during exercise! In fact, the liver consumes two lactates and two acid protons to make one sugar molecule.
From the above you can see that: If the body needs and uses lactate, but the body suffers if hydrogen ions accumulate and causes lactic acidosis, then provide the body with what it uses most rapidly, and give it something which will help remove the acid protons formed during exercise. The answer is Polylactate, because it restores the balance of salt and acid by providing lactate molecules, but without that acid component. End result- less muscle burning and fatigue.
The active ingredients in Cytomax are composed mainly of the organic compound, Polylactate, but also a small amount of inorganic potassium and sodium forms of lactate. In this case, lactate is used to carry and replenish the salts lost in sweat during exercise as well as stimulate thirst insuring hydration. However, relative to energy use, inorganic salt loss during exercise is slow. Therefore, should someone try and replace energy during exercise by using an inorganic salt such as sodium, potassium or calcium lactate, the lactate would rapidly be removed leaving a large salt load with dehydration being the end result. Instead, with the completely organic Polylactate in which amino acids are used to carry the lactate molecules, the body is provided substances all of which are useful during exercise and recovery.
AMINO ACIDS AND SUCCINATES
Cytomax also contains the amino acids L-glutamine and L-alanine, since these play a key roll in the process of gluconeogenesis and the removal of ammonium ions from the blood.
During exercise amino acids pools in skeletal muscle are compromised in order to deliver these glucose producing amino acids to the liver. There they will be deaminated and the carbon skeletons of most (mostly alanine) will be used for fuel. This process depletes muscle protein and consequently hinders muscle mass. By providing these two amino acids, Cytomax ensures that both plasma levels and intramuscular amino acids pools have enough aminos for fuel to go around.
Cytomax also contains Succinate ETF in the form of calcium, magnesium and potassium succinates, as well as inosine.
Succinates is a Krebs cycle intermediate. It occurs normally within aerobic cells, such as muscle. Succinate supplements such as Succinate ETF increase maximal oxygen consumption and high-intensity exercise capacity by enhancing the ability to use lactic acid as a fuel during exercise.
In summary, for replacing fluid and electrolytes, providing energy, stimulating body glucose production, buffering the effects of acids produced during exercise, maintaining amino acid pools in muscle and enhancing the use of lactic acid, consider using CYTOMAX which is blended with all of these processes in mind.
Ok my problem with them is that in one article it basically says that amino acids are not necessary and then in the article about the Cytomax it says they are necessary. Did anyone from Cytosport wanna check to see what they post on their website? I mean come on thats pretty ridicoulous
The reason I was looking for this in the first place was because I wanted to decide between using Accelerade during a workout or Cytomax, and I believe that Cytosport just helped me make my decision.