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As my topic, I pick soccer. The soccer sport really is significant to me because I grew up playing this sport. Growing up in my neighborhood in Haiti, I was known as the most skillful soccer player. In fact, when my grandfather brought my family and I to this country. I lot of people in my neighborhood thought the next time they were going to see me, would be on TV, playing the USA national soccer team.  Thus, every time I touch a soccer ball, it reminded me of my younger self when I lived in Haiti. I picked soccer as my topic because of the love I have for the game, yes. But I also picked soccer as my topic because, it is very popular and very hard to play. (Stolen & al, 2005) To be a skillful soccer player, when have to train and practice hard.

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Taylor, John. The Science of Soccer: A Bouncing Ball and a Banana Kick. University of New Mexico Press, 2014. Barbara Guth Worlds of Wonder Science Series for Young Readers. EBSCOhost, ezproxy.delhi.edu:2048/login?url=http://search.ebscohost.com/login.aspx?direct=true&db=nlebk&AN=686743&site=eds-live.

Denadai, Benedito Sérgio, et al. "Hamstrings-To-Quadriceps Strength and
Size Ratios of Male Professional Soccer Players with Muscle Imbalance."
Clinical Physiology & Functional Imaging, vol. 36, no. 2, Mar. 2016, pp.
159-164. EBSCOhost, doi:10.1111/cpf.12209.

Watanabe, Nicholas, et al. Weather Conditions, Travel Distance, Rest, and Running Performance: The 2014 FIFA World Cup and Implications for the Future." Journal of Sport Management, vol. 31, no. 1, Jan. 2017, pp. 27-43. EBSCOhost, doi:10.1123/jsm.2016-0077.

·         Alleman, Rick J., et al. "Why Does Exercise "Trigger" Adaptive Protective Responses in the Heart?" Dose-Response, vol. 13, no. 1, Jan. 2015, pp. 1-19. EBSCOhost, doi:10.2203/dose-response.14-023.Alleman.

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Because the muscle temperature is very high in soccer, the body have to deal with an increase in internal body temperature (Grantham et al., 2010), and that will cause both heat illness and heat stroke.

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The other issues of playing under such weather conditions, is not being able to release heat from their skin (i.e., >40 °C; Mohr et al., 2010).

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Ex. The total distance running in a game decline vastly by 7% (-21 °C; Mohr, Nybo, Grantham, & Racinais, 2012).

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FIFA is concern for the future World Cup event. Which is the most watched tournament event (Rampinini &al., 2009). The World will held in Russia next summer. FIFA is mostly worried about the World Cup of summer 2022, which will be held in Qatar. (Mayen, 2014; Wallace & Norton, 2014) And, is well known for its extreme heat and humid conditions.

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Exercising increases one protection against getting an acute coronary syndromes (Brown et al. 2005b; Lee et al. 2012; Frasier et al. 2013).

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When compared with various other sports’ player like volleyball and judokas, soccer players tend to have bigger hamstrings/quadriceps (Magalhaes, & al. 2004).

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Just like every sports, by consistently train and practicing soccer, one can improve both their ability to play the game and their muscle strength (Gour & al, 1999).

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Being able to sprint, jump in the air, and tackles, are frequently what led players to score (stolen & al, 2005).

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Muscle strength and anaerobic power are extremely important when it comes to playing the game (stolen & al, 2005).

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Also Running, jumping, kicking, heading, and throwing a soccer ball all involves biochemistry (John Taylor, Barbara Guth).

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·         Energy, there are three forms of energy that plays an important role in playing soccer. Energy of motion (kicking, heading, and throwing the ball), energy of position (height above the ground), and metabolic energy (energy obtained from the food), (John Taylor, Barbara Guth).

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·         1st, the ball can burst, and release the molecules. 2nd, the coach can inflate the ball by adding more molecules to the already crowed. 3rd, the ball can strike a firm surface like the ground, the goal post and anyone foot (John Taylor, Barbara Guth).

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·         The more molecules there are inside the volumes, the more they collide with each other (John Taylor, Barbara Guth).

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·         The air inside that bladder contains many different gases of molecules (nitrogen, oxygen, carbon dioxide and argon) moving around inside the fixed volumes (John Taylor, Barbara Guth).

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·         The chemical adenosine triphosphate is very important for the energy production of the body of a soccer ball (John Taylor, Barbara Guth).

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Playing in such condition will cause dehydration and hyperthermia (Maughan et al., 2010; Mohr, Krustrup, & Bangsbo, 2005), which will also affects their exercise performance.

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·         Friction is also important in playing soccer. This is an example of friction; friction happens in soccer when a ball starts to lose force, after it being kicked (John Taylor, Barbara Guth).

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Vector is represented by magnitude and direction. And, in soccer those two things are very important. An example of the application of vector, is a soccer ball travelling in a specific direction at a specific speed (John Taylor, Barbara Guth).

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Exercising helps reducing one chances of getting cardiovascular disease (Lee et al. 2000).

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Acceleration is the measurement of how fast something is going. For example; a soccer ball that is being kicked at a resting position such as a goal kick, a corner kick, or a free kick. When the player’s foot hit that soccer ball, the ball accelerates from zero speed to full speed (John Taylor, Barbara Guth).

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Roberto Carlos - The Banana: Best Football Free Kick Goal Ever Scored (Brazil vs France)

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http://amazon.com/author/danielfletcher Brazil left-back Roberto Carlos scores an epic free kick against France at Le Tournoi du France, 1997 - famed for its wicked swerve, Carlos helped popularise the outside-of-the-foot bend technique for set-pieces. This free kick is know as The Banana. http://twitter.com/Daniel_Fletcher http://Goodreads.com/DanielSFletcher Stay cool

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Playing soccer in extreme weather conditions, like hot and humid environment (Grantham & al., 2014) is not good for the players’ body.

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Force causes an object to move from a state of rest, to acceleration. And, forces apply to soccer anytime a player kick or head a soccer ball. Which gives the ball a magnitude and direction (John Taylor, Barbara Guth). An example of magnitude, is the amount of strength a soccer player put in a ball when he/she kicks it. The direction is simply where the ball travels when it’s kicked (John Taylor, Barbara Guth).

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A soccer ball is generally made with a rubber bladder and covered by a protective case, which is made from either leather or some other kind of material (John Taylor, Barbara Guth).