The graph below was generated by students in a physiology lab.The top trace (myogram)shows contraction force,the bottom (EMG)shows the electrical stimulus.On the graph,label a muscle twitch.What property of muscle is being tested here? What caused the increase in force (and subsequent decrease)? 
Definitions:
Research Literature
Written documents that summarize and critically analyze the existing body of knowledge on a particular topic.
Alternative Hypothesis
A statement that suggests a potential outcome or association that differs from the null hypothesis.
Steroids
Biologically active organic compounds with four rings arranged in a specific molecular configuration, used medically and illicitly for muscle growth.
Home Runs
In baseball, a hit by the batter that results in him safely reaching home plate, scoring a run without any errors or fielder's choices.
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