The criteria for articles chosen was that each piece of research needed to involved the intake of CR, and being physically or athletically tested pre and post ingestion of CR with no other supplementation, steroid, or health related drugs involved. All research articles were double blind with placebo groups to prevent the effects of bias and placebo effects. All research was done within the previous 16 years and a balance of gender was aimed for in order to be unbiased but resources were mainly male orientated. Time period was not contained as a variety of short and long term supplementation is good to compare the different effects of sports performance over different durations of supplementation. Age of subjects in experiment weren’t specific but fell into ages between 16 and 25 beside Gualanoa (2014) article who were considerably older subjects.
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The results suggests that Cr is safe to use as not one of the article results showed a side effect (see table 1), this is hard to distinguish using the research articles found as only 3 of the 7 experiments went on for longer than a week, but the long duration experiments also concluded no side effects. The lack of experiments which involved females made it very difficult to establish if Cr can enhance female athlete’s ability. 4 of the studies involved females but only 1 of those 4, gualanoa (2014) was entirely female base, but is not as sport specific as they were all older women and were measured in terms of physical ability not athleticism. Ziegenfuss (2002) was the only experiment which involved half and half male female participation and for the other 2 experiments researched females only made 25% or less of the subject numbers. In future more athletic, female related...
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... elite performers. European Journall of Applied Physiology and Occupational Physiology, 78(3), pp. 236-240.
Renata Rebello Mendes, I. P. A. O. J. T., 2004. Effects of creatine supplementation on the performance and body. Journal of Nutritional Biochemistry , Volume 15, pp. 473-478.
Rossouw, F., Krüger, P. & Rossouw, J., 2000. The Effect of Creatine Monohyrdrate loading on Maximal Intermittent Exercise and Sport-Specific Strengt in well Trained Power-Lifters. Nutrition Research, 20(4), pp. 505-514.
Vatania, D. S., Farajib, H., Sooric, R. & Mogharnasid, M., 2011. The effects of creatine supplementation on performance and hormonal response in amateur swimmers. Science & Sport, 26(4), pp. 272-277.
Ziegenfuss, T. N. et al., 2002. Effect of creatine loading on anaerobic performance and skeletal muscle volume in NCAA division I athletes. Nutrition, 18(5), p. 397–402.
The data collected during this experiment has shown that a relationship likely exists between the rate of muscle fatigue and the time spent performing vigorous exercise prior to the set of repetitive movements. This is likely due to a build-up of lactic acid and lactate as a result of anaerobic respiration occurring to provide energy for the muscle cell’s movement. As the pH of the cell would have been lowered, the enzymes necessary in the reactions would likely not be working in their optimum pH range, slowing the respiration reactions and providing an explanation to why the average number of repetitions decreased as the prior amount of exercise increased.
Creatine provides additional energy for the body, and increases muscle volume. Most of the size and strength gains are during the first month of use. It gets rid of lactic acid, and improves exercise recovery time. Creatine enhances protein synthesis, and also delays the onset of fatigue.
3. Effects of resistance training and Chromioum Picolinate on body composition and skelatal muscle in older men by, Campbell WW., Joseph LJ., Davey SL., Cyr-Campbell D., Anderson RA., and Evans WJ.. JOURNAL OF APPLIED PHYSIOLOGY. 86(1): 29-39,1999 January.
Creatine serves as an energy reserve in muscle cells. Muscular contraction is powered by the breakdown of ATP (adenosine triphosphate) to ADP (adenosinediphosphate). When all the ATP is broken down, creatine phosphate in the muscle donates a phosphate group to ADP, and further energy reactions can occur. Creatine monohydrate is a precursor to creatine phosphate. By supplementing with CM, CP levels in muscle apparently are maximized, and more muscular work can occur, since there are greater energy reserves to use.
Creatine increases the body's ability to do work. It is high powered and generates the muscles ultimate energy source - ATP (adenosine triphosphate)- ATP produces the contractions of a muscle's proteins. When muscles are performing work ATP is being broken down into ADP (adenosine diphosphate) and energy is given off. The ATP being used usually lasts 10 - 15 seconds. After that the muscle depends on creatine phosphate to restock the ATP. Creatine acts as a reserve for the ATP. Therefore increased amounts of creatine will allow the body to supply ATP at a faster rate. Which, in turn allows an individual to workout longer and maintain a high level of strength. With creatine as a supple)-nent the body is exposed 4 grams of creatine per kilogram. Red meats give 1 gram of creatine per large serving.
Kuhn, C., Swartzwelder, S., and Wilson, W. Pumped: Straight Facts for Athletes about Drugs, Supplements, and Training. 2000. W.W. Norton, New York and London.
Background on Creatine What is Creatine When I think of Creatine I don’t think of a body building supplement I think of an aid to recuperation. Like an aspirin you take if you have a headache, an athlete takes Creatine if they have chronic sore muscles from continuously working out. Creatine is a compound that can be made in our body. It is taken as a strength supplement. The chemical name for Creatine is methyl guanidine-acetic acid. The organ that produces the bodies Creatine is the liver. The amount of natural Creatine in the body can be increased or decreased depending on our diet(Absolute). How much Creatine do we have in our body? A 160-pound person would have approximately 120 grams of Creatine stored in their body (The Beg…). The reason Creatine is such a hot commodity is because 95-98% of the Creatine in our body is stored in our muscles.
Creatine is an effective, powerhouse nutrient that is derived from the amino acids glycine, L-arginine, and L-methionine. Creatine is beneficial for athletes as it helps improve strength, muscle mass, body composition, and boosts athletic performance. Research has shown improvements in endurance, power, and performance; this is all due to the creatine increasing phosphocreatine (PCr) within the muscle, which allows for quicker regeneration of the body’s energy.
Primarily lifters and athletes take creatine to get ahead of the competition. In an article written by Nancy Ling, she mentions how in the Olympic games from 1964-1994 Soviet Union powerlifters consumed creatine to get an edge on the competition and had great success from it. ("Creatine? Is It Worth the Risk?"). Also in the article, Nancy stressed the importance of taking the correct amount of creatine because it can help prevent kidney and liver problems. On the other side, consuming creatine can be dangerous if you are prone to having seizures, blood clots, or cardiac
Creatine is produced by the body and stored in all kinds of muscles such as the heart, diaphragm, and all visible muscles. Creatine’s role is to
this is because creatine is most effective when the muscles are used for a short 6 seconds, then a long 45 second rest. The time period of using muscles for 6 seconds and then resting for 45 seconds is closely related to a football game where the players run a play, then get to rest until the next play is called. At the professional level of football, most teams are allowed to take creatine, but some teams are have banned the use of it because no one know the long term effects yet (Actions and Effects).
Creatine has been used in sports throughout time. Athletes have always had a fascination with being excellent at what they do. With the banning of steroids from competitive sports and the implementation of random drug testing in most sports, most athletes are still somehow hoping to gain an edge on their competition. This edge that they are using is creatine.
Abstract: Since the beginning of sports competition, athletes have always looked for some kind of an edge over their competitors. They will do whatever it takes to be one of the elite and that includes injecting supplements into their bodies to make them bigger, stronger, and faster. Steroid use is probably one of the most common drug misuses in sports competition. Athletes found that with anabolic steroids one could become a better athlete twice as fast. Not until 1975 was the drug first banned from Olympic competition because of the health risks it produced. Shortly thereafter, the rest of the sports world did not allow anabolic steroids as well. With the use of steroids no longer permitted athletes began to look for other alternatives. On the rise is two substances called creatine and androstenedione, both of which are sold over the counter. These two performance enhancers have only had minimal testing done on them, excluding the long-term effects, simply because they haven't been around long enough. Creatine and androstenedione have been said to produce results like steroids without the side effects. The truth is they do produce side effects and irregular muscle growth. By banning the use of performance enhancing drugs, just like steroids, sports competition will have a much healthier and fairer environment to participate in.
Mujika, I and Padilla, S. "Creatine Supplementation as an Ergogenic Aid for Sports Performance in Highly Trained Athletes: A Critical Review." International Journal of Sportsmedicine October 1997: 18(7): 491-496.
Innumerous scientists confirm that nutrition and dietary supplementation can deeply affect molecular and cellular processes that occur in the body during the exercise and the recovery process. This brief review analyzes the potential for performance enhancement through protein supplementation ingestion, and the importance of nutrition education for sports supplement users.