Question

# After ten years, Randy's resting heart rate stays the same. What will happen to his target heart rate? F. It will stay the same. G. It will increase. H. It will decrease. J. It depends on his fitness level.

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The maximum heart rate (MHR) is defined as the maximum number of heartbeats per minute. MHR can be obtained by subtracting age with a constant number which is 220. This means that as a person gets older, MHR decreases. For example, Randy’s MHR at 20 years old is 200 bpm ($220 - 20$). Ten years from now, Randy’s MHR at 30 years old becomes 190 bpm ($220-30$).

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