Nutrition Guide

Creatine ethyl ester, also known as creatine ester, cre-ester and CEE, is a substance sold as an aid for athletic performance and for muscle development in bodybuilding. It is an ethyl ester derivative of creatine, from which it is made. In the body, CEE is converted back into creatine. The ethyl ester is said to have a much better absorption rate and a longer half-life in the body than regular creatine monohydrate, because it is slightly more lipophilic. However, these claims have not yet been conclusively proven by independent research, and in fact a study presented at the 4th International

Main article: Creatine ethyl ester CEE is a form of commercially available creatine touted to have higher absorption rates and a longer serum half-life than regular creatine monohydrate by several supplement companies. No peer-reviewed studies have emerged on creatine ethyl ester to conclusively prove these claims, however, a study presented at the 4th International Society of Sports Nutrition (ISSN) annual meeting demonstrated that the addition of the ethyl group to creatine actually reduces acid stability and accelerates its breakdown to creatinine. The researchers concluded that creatine ethyl-ester is inferior to creatine monohydrate as a source of creatine.[13] As a supplement, the compound

While creatine's effectiveness in the treatment of many muscular, neuromuscular, and neuro-degenerative diseases is documented,[18] its utility as a performance-enhancing food supplement in sports has been questioned[19] (see creatine supplements for more information)[dubious – discuss]. Some have even proposed that its use as a performance enhancer should be banned.[20][21] [22] [23] Despite this, creatine remains very popular.[24]

Creatine supplements are athletic aids used to increase high-intensity athletic performance. Though researchers have known of the use of creatine as an energy source by skeletal muscles since the beginning of the 20th century, they were popularized as a performance-enhancing supplement in 1992.

In 1912, Harvard University researchers Otto Folin and Willey Glover Denis found proof that ingesting creatine can dramatically boost the creatine content of the muscle[1]. In the late 1920s, after finding that the intramuscular stores of creatine can be increased by ingesting creatine in larger than normal amounts, scientists discovered creatine phosphate, and determined that creatine is a key player in the metabolism of skeletal muscle. The substance creatine is naturally formed in vertebrates. While creatine's influence on physical performance has been well documented since the early twentieth century, it only recently came into public view following the 1992 Olympics in

In 1912, Harvard University researchers Otto Folin and Willey Glover Denis found proof that ingesting creatine can dramatically boost the creatine content of the muscle[1]. In the late 1920s, after finding that the intramuscular stores of creatine can be increased by ingesting creatine in larger than normal amounts, scientists discovered creatine phosphate, and determined that creatine is a key player in the metabolism of skeletal muscle. The substance creatine is naturally formed in vertebrates. While creatine's influence on physical performance has been well documented since the early twentieth century, it only recently came into public view following the 1992 Olympics in

Bodybuilding supplements are substances taken by athletes involved in weight training or other sports to aid in the building of lean muscle mass or to cause fat loss. Bodybuilding supplements may also be used to improve sports performance and improve recovery from events and training. One important distinction exists in many weight training groups between supplements and anabolic steroids. There is a common misconception among non-supplement-users that supplementation for muscle-building purposes is the same as steroid use or, at the very least, leads to steroid use.[citation needed] However, this charge is often challenged by supplement users on the grounds that supplements

Creatine Gluconate is a molecule of creatine bonded to a molecule of glucose. This synthetic alteration allegedly allows for greater intake of creatine in the gut because it is bonded to fast-digesting glucose. As glucose triggers an insulin response it also helps the uptake of creatine in the muscles themselves.[1]

Creatine is nitrogenous organic acid that occurs naturally in vertebrates and helps to supply energy to muscle and nerve cells. Creatine was identified in 1832 when Michel Eugène Chevreul discovered it as a component of skeletal muscle, which he later named creatine after the Greek word for flesh, Kreas.

Creatine is nitrogenous organic acid that occurs naturally in vertebrates and helps to supply energy to muscle and nerve cells. Creatine was identified in 1832 when Michel Eugène Chevreul discovered it as a component of skeletal muscle, which he later named creatine after the Greek word for flesh, Kreas.

Creatine administration was shown to significantly improve performance in cognitive and memory tests in vegetarian individuals involved in double-blind, placebo-controlled cross-over trials.[29] Vegetarian supplementation with creatine seems to be especially beneficial as they appear to have lower average body stores, since meat is a primary source of dietary creatine. [29]

Creatine is often taken by athletes as a supplement for those wishing to gain muscle mass (bodybuilding). There are a number of forms but the most common are creatine monohydrate - creatine complexed with a molecule of water, and Creatine ethyl ester (CEE). A number of methods for ingestion exist - as a powder mixed into a drink, or as a capsule or caplet. Once ingested, creatine is highly bioavailable, whether it is ingested as the crystalline monohydrate form, the free form in solution, or even in meat. Creatine salts will become the free form when dissolved in aqueous solution.

In humans, approximately half of stored creatine originates from food (mainly from fresh meat). Since vegetables do not contain creatine, vegetarians show lower levels of muscle creatine which, upon creatine supplementation, rise to a level higher than in meat-eaters.[6] In humans, about half of the daily creatine is biosynthesized from three different amino acids - arginine, glycine, and methionine. The rest is taken in by alimentary sources. Ninety-five percent of creatine is later stored in the skeletal muscles. The pathway for the synthesis of creatine Arg - Arginine; GATM - Glycine amidinotransferase; GAMT - Guanidinoacetate N-methyltransferase; Gly - Glycine; Met - Methionine; SAH

A placebo-controlled experiment found that vegetarians that took 5 grams of creatine per day for six weeks showed a significant improvement on two separate tests of fluid intelligence, Raven's Progressive Matrices and the backward digit span test from the WAIS. The treatment group was able to repeat back longer sequences of numbers from memory and had higher overall IQ scores than the control group. The researchers concluded that "supplementation with creatine significantly increased intelligence compared with placebo."[16] A subsequent study found that creatine supplements improved cognitive ability in the elderly.[17]

This article needs additional citations for verification. Please help improve this article by adding reliable references. Unsourced material may be challenged and removed. (September 2007) This article or section is in need of attention from an expert on the subject. WikiProject Pharmacology or the Pharmacology Portal may be able to help recruit one. If a more appropriate WikiProject or portal exists, please adjust this template accordingly. (November 2008) Creatine is often taken by athletes as a supplement for those wishing to gain muscle mass (bodybuilding). There are a number of forms but the most common are creatine monohydrate - creatine complexed with a molecule

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