HMS, BM EQ-Bank 881 MC

During a 200-metre sprint, an athlete experiences significant physiological changes. Which option correctly identifies the interrelationship between the respiratory and circulatory systems during this activity?

Decreased ventilation rate with increased cardiac output
Increased ventilation rate with decreased stroke volume
Increased ventilation rate with increased cardiac output
Decreased ventilation rate with decreased heart rate

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\(C\)

Show Worked Solution

C is correct: Both breathing rate and cardiac output increase during sprinting. This coordinated response delivers more oxygen to working muscles.

Other Options:

A is incorrect: Ventilation rate increases during intense exercise.
B is incorrect: Stroke volume typically increases or remains stable during exercise.
D is incorrect: Both ventilation rate and heart rate increase during intense exercise.