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The Use of Caffeine and Its Effects in Endurance Sports Performance - Essay Example

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The Use of Caffeine and Its Effects in Endurance Sports Performance

On the other hand, according to McDaniel, McIntyre, Streitz, Jackson, & Gaudet, (2010), approximately 25% of all athletes use caffeine as a supplement to their performance and the effects can include increased endurance, clarity in thinking, and a resistance to fatigue. In looking at the use of caffeine both in experimental studies and through the effects that appear to be relevant, the use of caffeine in endurance sports performance can be assessed. Caffeine is a xanthine alkaloid, which means it is a part of a group of chemicals that act as stimulants. The purpose of caffeine in the natural world is to act as a pesticide in seeds, fruits and the leaves of certain plant life. For human beings, the substance acts as a psychoactive drug which stems off fatigue and stimulates alertness as it crosses the blood-brain barrier to act upon the central nervous system. Caffeine can have an effect on hormonal, muscular, metabolic, cardiovascular, renal and pulmonary functions. This means that its effects can stimulate bronchodilation, vasodilation of blood vessels, lipolysis, blood filtration in the kidneys, neural activation of muscle contraction, peripheral fatigue, and it can lower the respiratory exchange ratio. Although there is a myth that caffeine can cause dehydration, caffeine does not create this effect (Kraemer, Fleck, & Deschenes, 2011). In most mammals, caffeine stimulates the TRPA1 channels which mean that it is recognized as the body as an irritant, as something that will cause pain

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or function as a stressor. In a study done by Nagatoma and Kubo (2008), mice showed activation of TRPA1 channels while humans did not experience the same activation. In another study done by Lu, Nolan, Lou, Peng, Wagner, and Conney (31 July 2007) mice exhibited a decrease of thickness in the dermal layer, which was shown to be between 38% and 68% after two weeks of receiving caffeine imbued water and allowed to exercise voluntarily. Parametrial fat pads were decreased by 35% to 77%. On the other hand, the increase in the effect of UVB on the epidermis was appreciated at 92% to 382%. Where mice responded differently to caffeine in regard to how the body recognized the substance, the effects were a loss in body fat with an increase in UVB apoptosis, meaning that cell death of the epidermis when exposed to UVB increased by a large margin. What can be deduced from these particular two studies is that where other mammals recognize caffeine as something that is undesired in the body, humans do not react in the same way. However, if the body of the human reacts to the use of caffeine in the same way as the mouse, a reduction in fat can be seen, while sensitivity to UVB can create problems where sun damage and the potential for cancer is concerned. Furthermore, scientists at Coventry University have proven that caffeine intake in high doses increases muscle power and enduranc
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Running Head: CAFFEINE AND SPORTS The use of caffeine and its effects in endurance sports performance The use of caffeine and its effects in endurance sports performance The use of caffeine for increased endurance during sports performance is a controversial issue that has as many detractors as supporters…
The Use of Caffeine and Its Effects in Endurance Sports Performance
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This essay was always my weak point. I could never finish it well. Still, after I found this precise essay, I understood how it should be completed. So, I performed my research afterward and completed the essay in several hours, instead of days as it was previously.
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