Question

Jane is 20 years old and wants to identify her target heart rate range (THR between 60% - 80%). Remember how to find Maximum Heart Rate (MHR) and use this to find Jane's target heart rate (THR) range?

Which formula is used to calculate Maximum Heart Rate (MHR)?
a) MHR is 220; THR range is 150 bpm - 180 bpm
b) MHR is 150; THR range is 100 bpm - 150 bpm
c) MHR is 200; THR range is 120 bpm - 160 bpm
d) MHR is 135; THR range is 137 bpm - 157 bpm

Answer 1

Jane's Maximum Heart Rate (MHR) is calculated as 220 minus her age, giving her an MHR of 200 bpm. Her target heart rate (THR) range at 60% - 80% of her MHR is 120 bpm to 160 bpm, which makes the correct choice answer (c).

Step-by-step explanation:

To calculate Jane's target heart rate (THR), we first need to find her Maximum Heart Rate (MHR). The formula to estimate MHR is 220 minus the individual's age. For Jane, who is 20 years old, the MHR would be 220 - 20 = 200 bpm. The THR range is then calculated as a percentage of the MHR. To find the range for 60% - 80% of her MHR:

• 60% of 200 bpm = 0.60 × 200 = 120 bpm
• 80% of 200 bpm = 0.80 × 200 = 160 bpm

Therefore, Jane's THR range is 120 to 160 beats per minute (bpm). The correct answer to the question is (c) MHR is 200; THR range is 120 bpm - 160 bpm.