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The effects of caffeine in elite sports introduction for essay
The effect of caffeine on human health
Literature review on caffeine in sport
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Caffeine is the most popular and most widely used stimulant in the world. In Canada, the average person drinks 2.6 cups of coffee a day; that is equivalent to 949 cups of coffee a year. (Van Houtte) Caffeine is a central nervous system stimulant that improves ones attention, focus, and fatigue. When caffeine is ingested it causes your neurons to move at a faster rate, increasing alertness. (Fit Day) Caffeine also binds to the neural receptors, which blocks the adenosine, which prolongs tiredness. Caffeine is a white odorless powder that is most commonly found in coffee, tea, energy drinks, and pops. Caffeine can also be considered and ergogenic aid. Ergogenic aids are external influences that enhance/ improves ones strength, endurance, reaction time and speed of recovery. (Healthline) The three theories that make caffeine an ergogenic aid during exercise is the effect it has on the central nervous system, skeletal muscles, and metabolic changes. (Sheila G. Dean) Caffeine also has a positive effect on an individual’s health, some positive effects include: reduces risk of developing liver cancer, Parkinson’s disease, and Alzheimer’s. (Chawala) Caffeine has been proven to have positive effects on an athlete’s performance, and ones overall health.
The first theory that makes caffeine an ergogenic substance is the effect it has on the central nervous system is that it decreases the athlete’s perception of effort on muscle contraction. In other words, caffeine gives athletes the illusion that they have more energy. Adenosine is a central nervous system neuromodulator, meaning it transmits information to other neurons, modifying their activities. (McGill University) When adenosine binds to the receptors you begin to feel lethargic and ...
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...ease of calcium, and reduction of lactic acid is a result of glycogen sparing. In endurance exercise, caffeine allows athletes to exercise for a longer duration through glycogen- sparing, burning fats as fuel, increase calcium production, and increase in alertness and adrenaline. Caffeine is also proven to improve reaction time by the increase amount of adrenaline the caffeine provides. Caffeine also aids in post-work out pain an athlete may experience after a rigorous workout. Caffeine also has its health benefits. Caffeine reduces the risk of: liver cancer by improving enzyme activity, Alzheimer’s by blocking the progression of the disease as a result of the A2A antagonist, and Parkinson’s disease by protecting dopamine- producing cells. Ultimately, caffeine is shown to have a positive effect on an athlete’s performance, and also has positive health benefits.
Planaria are commonly known as flatworms. These flatworms have sensory organs which allow them to detect light using eyespots (Planaria,2017). The eyespots contain receptors that are highly sensitive to light stimuli causing planaria to prefer darkness. Planaria do not have lungs nor gills. Oxygen enters their bodies through membrane diffusion. Although planaria are just worms, their body react very similar to that of humans when injected with certain drugs or stimulants. One overused and highly popular stimulant is caffeine. Caffeine is known to increase individual’s energy and physical activity which makes them more alert of the surroundings. This observation leads to the question of how different concentrations of caffeine would affect planaria’s
Caffeine raises your blood pressure when you drink/eat it, raising your blood pressure in general is not a good thing but imagine drinking and/or eating caffeine daily, and your blood pressure constantly rising. Another negative aspect is that caffeine can have a disruptive effect on your sleep. The most obvious effect of the caffeine is that it can make it hard for you to fall asleep. It can help you stay awake during the day but can also make you stay awake during the night when you are trying to fall asleep. You can also have withdraws from caffeine, going back to the story “Java Man” the author Malcolm Gladwell considered it a drug and remember you can get addicted to drugs (you can really get addicted to anything). There are plenty more negative ways caffeine can disrupt your lifestyle but you know what they say for every negative thing you can say there can be some
The objective of this experiment was to perform extraction. This is a separation and purification technique, based on different solubility of compounds in immiscible solvent mixtures. Extraction is conducted by shaking the solution with the solvent, until two layers are formed. One layer can then be separated from the other. If the separation does not happen in one try, multiple attempts may be needed.
Caffeine, a central nervous system stimulant, is the main psychoactive ingredient in energy drinks, which enhances alertness and mood, and counteracts symptoms of sleep. There is no doubt ...
Griffith-Greene, 2014. Sports drinks contain electrolytes such as sodium and potassium, which carry an electrical current and aid in bodily functions as well as replenishing and rehydrating your body. Griffith-Greene, 2014 Just as fluid balance is strictly regulated, the electrolyte balance in the body’s cells, must maintain at a certain level. When the body’s electrolyte balance is at the correct level, nerve impulses and muscle contractions, occur as intended. When, there is an imbalance of electrolytes in the blood, cell functions, physiologic function deteriorates and athletic performance is impaired.
Zhang, Yong. (1989) The Effects of Chronic Caffeine Ingestion on Peripheral Adenosine Receptors. New York.
A lot of people often wonder what caffeine is. When isolated in pure form, caffeine is a white crystalline powder that tastes very bitter. The chief source of pure caffeine is the process of decaffeinating coffee or tea. Caffeine is used to provide“boost energy” or a feeling of heightened alertness. It is often used to stay awake longer and late into the night. Many people feel as though they “cannot function” in the morning without a cup of coffee to provide caffeine and the boost it gives them. Caffeine is an addictive drug. It operates using the same mechanisms that amphetamines, cocaine, and heroin use to stimulate the brain. Caffeine effects are more mild than amphetamines, cocaine, and heroin, but it is manipulating the same channels, and that is one of the things that gives caffeine its addictive qualities. If you feel like you have to have caffeine everyday and cannot live without it, then you are considered addicted to caffeine.
Does one drink caffeine? Caffeine is everywhere, it's in everything, it's apart of our daily lives. That’s what people doesn’t realizes; every soda drink, every cup of coffee, and every energy drink he or she gulps down before a thrilling game, all of that is caffeine. Caffeine is only completed when he or she get addicted. Caffeine can be an exceptional threat to the human body; energy drinks for example, it has enough caffeine to kill someone if he or she drinks enough. Energy drinks has been the number one drink high school students drink to stay awake in school; they even bring the drink in classrooms, and more than one energy drink. Soda has enough caffeine to destroy ones inner body. Soda is a everyday drink for some individuals, they
Two similar, but separate studies were conducted. The first study (A) used 12 highly trained athletes, either triathletes or cyclists. The second study (B) used a smaller sample of 8 athletes with similar backgrounds. While training histories were similar, caffeine intake histories varied from occasional to regular intake of up to ~150 mg/day (2mg/Kg). Subjects first performed a maximal incremental power test to determine their VO2 peak, a measurement of the body's ability to taken in O2 and turn it into work. A work rate of ...
In 1995 Pasman and his team investigated the impacts of differing amounts of caffeine on endurance performance. Nine healthy, well-trained cyclists performed four endurance tests over four consecutive weeks. One hour before testing, individuals were instructed to take one of the four treatments: "placebo, 5, 9, and 13 mg/kg of caffeine in capsule form". (Pasman, 1995) Day of the week and time were kept the same in each participant. During each session, subjects cycled six rides to exhaustion at about 80% maximal power and were forced to stop if the pedaling frequency was any lower than 50 RPM. Blood samples were taken before, during and after the exercise test. Results identified that all three caffeine treatments strikingly increased the individual's endurance performance as compared to placebo. Moreover, the data also shows that their cycling time increased by approximately 27% for all the
As the vast majority of Americans are addicted to caffeine, studies show that the effects during post-consumption, can be positive or negative depending on the amount and frequency of caffeine intake. As the demand for caffeine has increased, the caffeine industry has increased its amount of marketing and establishments to help aid this demand. Caffeine addiction can lead to serious health and physiological detriments. It is evident that the primary reason for consumption of caffeinated beverages is due to positive effects, such as alertness. The media has an abundance of marketing to continue to illustrate this main effect.
Caffeine exists in more than 60 species of plants and, caffeine is stimulant substance normally present in coffee, tea, soft drinks and chocolate, energy drinks are also available in some medicines. Caffeine is the alkaloid substance, and there are articles and several vehicles are classified under the list of semi-alkali, including Methylxanthines, which consists of three vehicles: Theophylline, Caffeine, Theobromine, which is located in coffee, tea and other plants. These compounds have a biological effect and different chemistry in different proportions. In spite of that these compounds are similar but different only in terms of containing the methyl group (methylCH3), but oxidized easily and turn into uric acid and other acids which are similar in chemical composition. Caffeine and its breakdown products have number of effects on the body. First, they disrupt the normal function of adenosine receptors, biochemical control switches found throughout the brain, kidneys, gastrointestinal tract cardiovascular system and respiratory system. Caffeine can trigger a classic fight-or-flight which is a condition response to gave us increased strength, stamina, and speed when we need it. For example, when we consume caffeine the air ways dilate to increase availability of oxygen, the liver releases sugars and fat into the blood to fuel the survival effort. The heart rate and blood pressure increase to supply fuel to muscles and circulation reduced in digestive system to make more blood available to muscles. As a result, caffeine physiologically causes the fight or flight mechanism (1 Stephen 57-58).
Coffee is the first thing that people associate with instant energy on a groggy morning. “In the U.S., coffee is king of beverages” (Reinke) Research has been done that has named coffee as an addiction to the people who consume large quantities of it. Coffee was named the top source of antioxidants. This is partly because of the amount consumed each day. Some of the antioxidants that coffee has are quinines and chlorogenic acid. It also contains trigonelline, an antibacterial compound. This is where coffee acquires its delicious aroma. Now let’s step back for a minute and just think about how much caffeine people consume. In an 8oz cup of coffee it has about 85 milligrams of caffeine. This is about double the amount that tea contains. Studies have shown that caffeine stimulates the brain and nervous system. This is where you get that energized feeling. After about the third cup, knees start to bounce, pens are clicking and people start running laps around the office. Caffeine can become addicting if you drink too much. Coffee can become that addictive habit people are unable to shake.
Preview: The potential effects are related to the main ingredient in coffee – caffeine. Caffeine is a drug that stimulates the central nervous system that increases alertness and energy, but it is also very addictive.
The popularity is evidenced by majority of literatures. It is because, besides tasty, coffee can enhance mood, needs as social intercourse, for example taking coffee and talking with friends in caf¨¦, is also one of the main reasons. Furthermore, caffeine benefits us in different kinds of aspects. It can raise arousal (alertness), human performance including vigilance performance, logical reasoning, concentration and memory. Besides, enhancing mood, reducing boredom also are the advantages accounting for popularity of coffee.