World-Class Sprinters Typically Do Not Breathe During the 9+ Seconds

Multiple Choice

World-class sprinters typically do not breathe during the 9+ seconds needed to complete 100 meters. What does this suggest about their energy production?

A) It must be mitochondrial, with oxygen provided by one big breath at the beginning of the sprint.
B) It must be mitochondrial, with oxygen provided by circulating hemoglobin already saturated with oxygen.
C) It must be glycolytic; the process is entirely anaerobic and the race will be over before NADH+ reserves are depleted.
D) It must be fermentative, which explains why most sprinters experience cramping once the race ends.