A person's training heart rate, in beats per minute, is the person's resting heart rate plus 60% of the difference between maximum heart rate and their resting heart rate. If resting heart rate is R and maximum heart rate is M , then the formula that gives training heart rate is T = R + 0.6( M - R ) In exercise physiology, a person's maximum heart rate, in beats per minute, is found by subtracting his age in years from 220. So, if A represents your age in years, then your maximum heart rate is M = 220 - A Use these formulas to find training heart rate for a 28-year-old person with resting heart rate of 64 beats per minute.
A) Training heart rate is 137 beats per minute.
B) Training heart rate is 141 beats per minute.
C) Training heart rate is 104 beats per minute.
D) Training heart rate is 160 beats per minute.
E) Training heart rate is 218 beats per minute.

Question

Quizplus · Accepted Answer

First, we need to find the maximum heart rate using the formula M = 220 - A:
M = 220 - 28 = 192 beats per minute
Then, we can use the formula for training heart rate: T = R + 0.6(M - R)
T = 64 + 0.6(192 - 64) = 64 + 0.6(128) = 142.4, which rounds to 141 beats per minute. Therefore, the training heart rate for a 28-year-old person with a resting heart rate of 64 beats per minute is 141 beats per minute.

A Person's Training Heart Rate, in Beats Per Minute, Is