HMS, BM EQ-Bank 318 MC

During an athletics training session, a coach observes a sprinter's heart rate. Which of the following is the most likely immediate physiological response to high-intensity sprint training?

Decreased heart rate
Increased heart rate
Decreased cardiac output
No change in heart rate

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Consider Option B: Increased heart rate

Immediate increase in heart rate to supply working muscles with oxygen and nutrients.

Other Options:

A is incorrect: Heart rate increases not decreases during exercise.
C is incorrect: Cardiac output increases not decreases during exercise.
D is incorrect: Heart rate changes in response to exercise, it does not remain the same.