Which of the following would be the BEST representation of a target heart rate for a 20 year old woman? Use the Karvonen formula and assume an exercise intensity of 70% and a resting heart rate of 80.
A)(220 - 20) x 70%
B)[208 - (.7 x 20)] x 70%
C)[[208 - (.7 x 20)] - 80] x 70%. Then add 80 back to the total.
D)[[208 - (.7 x 20)] - 20] x 70%. Then add 20 back to the total.

Question

Quizplus · Accepted Answer

[[208 - (.7 x 20)] - 80] x 70%. Then add 80 back to the total. The Karvonen formula takes the estimated maximum heart rate (in this case, calculated as 208 - (.7 x Age)), subtracts the resting heart rate, then multiples the result by the target percentage (in this case, 70%). After this is calculated, the resting heart rate (in this case, 80) is added back in. The target heart rate as calculated would be equal to 159.8 or effectively 160 bpm.

Which of the Following Would Be the BEST Representation of a Target