What is the primary source of ATP production in ultra short-term (high intensity) exercise performances (i.e., exercise lasting less than 10 seconds)?
A. oxidative phosphorylation
B. equal ATP production is derived from glycolysis and oxidative phosphorylation
C. phosphocreatine (i.e., ATP-PC system)
D. equal ATP production is derived from phosphocreatine and oxidative phosphorylation
Answer: C
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