Nervous system at work
An athlete's nervous system is hard at work during the planning and execution of a movement as precise as a high jump. Parts of the nervous system are involved in determining how hard to push off and when to turn, as well as controlling the muscles throughout the body that make this complicated movement possible without knocking the bar down; all in just a few seconds.
Source
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"OpenStax College, Introduction. October 17, 2013."
http://cnx.org/content/m44745/latest/Figure_35_00_01.jpg
OpenStax CNX
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