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Literature review on creatine supplementation
Creatine research paper
Creatine research paper
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Creatine; Turning Tennis Ball Biceps into Bowling Balls Creatine is found all around the body and is typically obtained through our diet but many athletes take it as an ergogenic aid. The supplement improves exercise performance and increases muscle mass, force, power, and reduces fatigue during a workout. There is plenty of evidence that taking creatine as a supplement benefits athletes during training. While it has many other benefits to physical and mental health, it has been shown to increase power output during exercise. According to Persky and Brazeau, Research proves that creatine has positive results from using the supplement creatine to enhance muscular performance and increases creatine concentration in the muscle. They explain that “performance has been enhanced in swimming, all-out cycling, sprinting, repeated jumping, and resistance training” (Persky and Gayle). Any activity in need of high …show more content…
A study from Karolinska Institute proves that “creatine supplementation per se doers not enchance performance or increase peak oxygen uptake during prolonged continuous exercise” (Balsom et al. 522). There were no significant changes in the data between the creatine and placebo groups. The only difference noticed was the change in weight from the creatine group. Muscle creatine concentration is a proven enhancement of creatine supplementation. The study from Muscle creatine loading in men, took 31 men who took different quantities of creatine every 30 or 28 days. The average increase in muscle creatine concentration was 20 percent. And “creatine ingestion at a rate of 20 g/day for a period of 5-6 days can significantly improve maximal exercise performance” (Hultman et al. 236). Whether the ingestion rate was 20 g/day or 2 g/day, muscle creatine concentration and exercise performance increased from the control group of 0
Over a three week period a test subject was instructed to come to the exercise physiology lab once a week. The purpose of the first week was to determine the baseline test data for the participant. During this first week, the subject was asked how many hours of sleep they had gotten the night before and how much they weighed. The subject was then instructed to put on a heart monitor and wear an O2 apparatus and begin running on a treadmill. This treadmill was set at zero incline for the beginning of the run until three minutes had passed. At the three minute mark the incline increased by 2.5%. After this the incline was continuously increased by 2.5% every two minutes. During this process, the VO2 and RER exchange rate of the subject was being tracked through the O2 apparatus. Their heart rate was recorded every 15 seconds. In addition, the subject was asked their perceived exertion at every increase in incline. The subject continued to run until they could not run anymore, at this time they would hop off the treadmill.
Creatine is one of the most popular sports supplements on the market and is used by bodybuilders, and athletes. It is an amino acid, like the building blocks that makes up proteins. It is also an important store of energy in muscle cells. Creatine is a natural nutrient found in our bodies and in the bodies of most animals. It can also be found in the form of a powder and sold as a supplement. Creatine is categorized as a food supplement by the Food and Drug Administration, like a vitamin and is available over the counter at drug stores and nutrition centers. Approximately 95% of the body’s creatine supply is found in the skeletal muscles. The remaining 5% of creatine is scattered throughout the rest of the body, with the highest concentration in the heart, brain, and testes. The human body gets most of the creatine it needs from food or dietary supplements.
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 was not a vitamin, however, but a synthesized blend of certain amino acids, which are the building blocks of proteins. The benefit creatine provides is increased energy for quick, anaerobic bursts of activity, such as are required in weightlifting. Athletes taking creatine can do more repetitions and sets of exercises than they could without it. Essentially, it speeds up the process of adding strength and size to the muscles by intensifying the workout. It has been compared to the way a marathon runner might saturate his muscles with carbohydrates before a race to provide endurance except that creatine strictly helps in anaerobic activities like muscle contractions.
Volek, J. S., Kraemer, W. J., Bush, J. A., Boetes, M., Incledon, T., Clark K. L., & Lynch J. M. (1997). Creatine supplementation enhances muscular performance during high-intensity resistance exercise. Journal of the American Dietetic Association, 97, 765-770.
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
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.
For purpose of emphasis and understanding, some background information is needed to fully understand exactly what blood doping can do for an individual. In order for muscles to perform, they need a ready supply of oxygen. During high intensity exercise, oxygen is depleted and the body can not get enough oxygen to the muscle in order for them to perform their optimal potential. This lack of ability to get oxygen to the muscle is called oxygen debt and results in lactic acid being formed. Lactic acid is a waste product of anaerobic cellular respiration within the muscle tissue, which can cause muscle sourness that, usually, is felt after a hard or long workout. Fatigue usually sets in with the onset of lactic acid production. Oxygen is carried to the muscle by two delivery systems. Three percent of oxygen is carried in plasma and ninety-seven percent is in hemoglobin, the principal protein in erythrocytes (red blood cells). If hemoglobin amounts are increased, this will lead to increased oxygen levels that can be transported to the muscles. Allowing the muscles to become more fatigue resistant.
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.
These performance enhancers, like androstenedione and creatine, are going to produce the same results. The use of performance enhancing supplements has long played a role in athletics, especially after the utilization of drug testing was introduced during the 1972 Olympics.
Creatine is one the most common sports supplement out there. But readers need to know what it is, and how it works before putting it in their bodies. Creatine is found in foods like steak, and is naturally produced in the body by the liver and kidneys. Skeletal muscle contains 95% of all creatine. The heart, brain and testes hold the remaining 5%. The claim that this article is making is supplementing with creatine while being engaged in a rigorous weight training regiment will increase muscular strength, size, and performance.
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.
Athletes need protein, primarily to repair tissues and rebuild muscle that is broken down during exercise and to help optimizes carbohydrate storage. This effect will help athletes gain immediate energy for competition or a workout.
According to the book “Understanding normal and clinical nutrition”, the Recommended Dietary Allowance (RDA) for protein intake is, 0.8g/kg of body weight for non-athletes; according to nutrition professionals this amount can be achieved through a healthy diet (Rolfes, Pinna, & Whitney, 2012). It is well known that athletes, due to their high energy expenditure, need to ingest a greater quantity of nutrients with the purpose of repairing and building muscle cells, besides reestablishing energy storage; The International Society of Sports Nutrition (2007) states that athletes and exercising individuals amount of protein to be consumed depends on the intensity of the exercise training sessions, the quality of the protein ingested in their whole foods diet, besides their carbohydrate intake. Meanwhile, athletes’ protein needs should be about 1.4 to 2.0 g/kg of body weight, and even though dietary supplements are a safe way to meet protein requirement, it would be healthier to obtain the necessary nutrients ingesting high quality foods as part of a daily diet (Campbell et al, 2007).