Steroids Increase Athletes Speed

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There are many factors to a sprinter that increases their speed. One way is to have their feet hit the ground harder, giving them an equal and opposite reaction of an upward force. Usain Bolt hits the ground with 1,000 pounds of force, in only 1.05 seconds. To achieve this amount of force, scientist think that it is due to genetics. Sprinter that have shorter Achilles tendons and longer toes. Their amount of fast-twitch muscles also range from 75 percent to 80 percent of their muscle make up. The use of steroids can help the development of fast-twitch muscles, helping the sprinter increase their speed. The type of clothing can also decrease or increase a athletes speed. In swimming, a swimmer can wear a NASA developed swimsuit that is specially
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