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Creatine dietary supplement

The amount excreted becomes an ruireliable measure of renal fruiction in subjects who have a very large muscle mass or in those taking creatine dietary supplements, such as athletes. [Pg.424]

Schroeder, C., J. Potteiger, J. Randall, D. Jacobsen, L. Magee, S. Benedict, and M. Hulver, The effects of creatine dietary supplementation on anterior compartment pressure in the lower leg during rest and following exercise. Clin J Sport Med, 11 87-95, 2001. [Pg.185]

Salomons GS, Wyss M, Jakobs C (2005) Creatine. In Coates P, Blackman MR, Cragg G, Levine M, Moss J, White J (eds) Encyclopedia of Dietary Supplements. Marcel Dekker, pp 151-158 Wyss M, Kaddurah-Daouk R (2000) Creatine and creatinine metabolism. Phys Rev 80 1107-1213... [Pg.748]

How many times have you heard some gym supplement expert say that the weight gained from creatine is just water Well, researchers wrote an interesting paper concerning creatine called Dangott, B. Schulz, E. Mozdziak, P.E. "Dietary Creatine Monohydrate supplementation increases satellite cell mitotic activity during compensatory hypertrophy" in International Journal of Sports Medicine 21 13-16,2000. What the heck is that, huh ... [Pg.217]

Some creatine products currently on the market are also enriched with other nutrients, including protein, glucose, vitamins, herbal ingredients, and other amino acids. Again, no hard data exists on the effectiveness of taking creatine in combination with other dietary supplements or herbals. [Pg.121]

Worldwide demand for nutritional supplements is projected to reach 162 billion by 2004. Sports supplements in particular are a rapidly-growing market in the United States. According to Nutrition Business Journal, a dietary supplement trade group publication, Americans spent 1.6 billion on creatine and other performanceenhancing dietary products in 2000. [Pg.122]

A 2001 National Collegiate Athletic Association report entitled NCAA Study of Substance Use Habits of College Student-Athletes revealed that among the 29.8% of NCAA athletes who admitted using dietary supplements in the past 12 months, creatine was taken by 25.8% (second only to protein supplements). Fifty-seven percent of these athletes first used nutritional supplements in high school. [Pg.122]

Pregnant women, women who breastfeed, and children and adolescents under 18 years of age should avoid creatine use, as its long-term effect on these populations has not been adequately studied. Individuals with chronic medical conditions should consult with their healthcare professional before taking creatine or any other dietary supplement. [Pg.124]

Because creatine is regulated by the FDA as a dietary supplement and not a drug, the purity of the product is a concern. A test of 100 popular nutritional supplements conducted by the International Olympic Committee (IOC) at the German Sports University in Cologne found that 16 were adulterated with nandrolone, a steroid. Nandrolone was not a listed ingredient on the product label, and most of the creatine products tested originated in the United States. [Pg.125]

According to the Physician s Desk Reference (PDR) for Nutritional Supplements, there are no known adverse interactions between creatine monohydrate supplements and prescription drugs, herbs, and/or other dietary supplements. However, the effects of creatine may be decreased or altered by the use of other drugs or supplements, so anyone considering taking the supplement should consult a physician first. [Pg.125]

Under the act, a dietary supplement manufacturer is required to make certain submissions or notifications to the FDA only when specific health claims are made for the product. And the primary responsibility for the safety of the supplement rests with the product manufacturer any required regulatory submissions can be made up to 30 days after the supplements are already available for sale to the general public. There are also no regulatory restrictions on the serving size a manufacturer chooses for the supplement, nor on the amount of included active ingredients. As such, the potency and dosage of creatine supplements may vary widely from manufacturer to manufacturer. [Pg.127]

There are also many drugs and dietary supplements that may have diuretic action as a side effect, but have a different primary purpose. For example, the supplement creatine is an ergogenic (energy-enhancer), but it also promotes fluid loss with regular use. [Pg.172]

According to the Slone survey, middle-aged men and women tend to be the most frequent users of herbal drugs or dietary supplements. However, researchers found that it is mostly young men who take the supplement creatine, which is promoted as a muscle builder. Older men most often took saw palmetto and also the dietary supplement glucosamine, which is believed to... [Pg.230]

Persky AM and Brazeau GA (2001) Clinical pharmacology of the dietary supplement creatine monohydrate. Pharmacology Reviews Reviews S3,161-76. [Pg.406]

Ergogenic help or hindrance Creatine is a popular, but untested, dietary supplement. [Pg.594]

E. B. Feldman Creatine A Dietary supplement and ergogenic aid. Nutrition Reviews 57,45 (1999). [Pg.363]

Should these substances be classified as dietary supplements or as drugs This is a legal distinction with wide-ranging repercussions. Because both andro and creatine were classified as dietary supplements under the Dietary Supplement and Health Act of 1994, they could be sold over the counter to anyone, without first being subjected to the extensive scientific testing necessary for substances classified as drugs. Before you start seasoning your steaks with andro and creatine, however, several important questions should be answered. [Pg.687]

EXAMPLE 13.30 Creatine phosphate concentration in the cytoplasm of skeletal muscle is 15 mM. Since the rate of ATP consumption during intense exercise is 3 mmol L s , there is potentially a 5 s supply of creatine phosphate. Many sprinters and power lifters attempt to increase the amount of creatine phosphate in their muscles by ingesting creatine as a dietary supplement. There is strong evidence to suggest that this strategy is effective, but the long-term effects on general health, particularly kidney function, are yet to be determined. [Pg.425]

Williams, M., Dietary supplements and sports performance Aminoacids, Int, J, Sport Nutr., 2, 63, 2005. Walker, J.B., Creatine Biosynthesis, regulation and function, Adv. Enzymol. Relat. Areas. Mol. Med., 50, 177, 1979. [Pg.286]

Friedrich W. Sertiimer (Germany 1783-1841) isolated a compound from opium extracts in 1805 that is now known to be morphine (12). In 1815, Michel E. Chevreul (France 1786-1889) isolated a material from skeletal muscle now known to be creatine (13), which has been used as a dietary supplement despite the observation that it can cause kidney damage and muscle cramping. He also elucidated the structure of simple soaps, which are metal salts of fatty acids (14) and gave the name butyric acid (15) to the carboxylic acid found in rancid butter. [Pg.4]

More strikingly, scientists at Aberdeen University found that a combination of allowed dietary supplements, such as creatine. [Pg.361]

Table 9.1 presents a list of foods that contain relatively large amounts of creatine. Most dietary creatine is obtained from meat and fish. For example, there is about 1 to 2 g of creatine in a pound of imcooked beef and salmon. Creatine can also be obtained in the diet from a munber of dietary supplements. Since large amounts of fish and meat must be consiuned in order to obtain gram quantities of ereatine, dietary supplementation of creatine provides an inexpensive and efficient means of increasing dietary availability of creatine without excessive fat or protein intake. [Pg.167]

Sullivan, EG., J.D. Geiger, M.P. Mattson, and S.W. Scheff, Dietary supplement creatine protects against traumatic brain injury. Ann Neurol, 48 123-729, 2000. [Pg.183]


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