National Physical Therapy Examination (NPTE) Practice Exam

To calculate the target heart rate range using the heart rate reserve (HRR) method, you first need to determine the heart rate reserve and then apply the desired intensity range.

Start by calculating the heart rate reserve. The heart rate reserve is found using the formula:

HRR = Max Heart Rate - Resting Heart Rate

In this case, the max heart rate is 180 bpm, and the resting heart rate is 60 bpm, so:

HRR = 180 bpm - 60 bpm = 120 bpm

Next, calculate the target heart rate range at 60% to 80% of the heart rate reserve, adding the resting heart rate back into the equation.

For 60% intensity:

Target Heart Rate = (HRR x 0.60) + Resting Heart Rate

Target Heart Rate = (120 bpm x 0.60) + 60 bpm

Target Heart Rate = 72 bpm + 60 bpm = 132 bpm

For 80% intensity:

Target Heart Rate = (HRR x 0.80) + Resting Heart Rate

Target Heart Rate = (120 bpm x 0.80) + 60 bpm

Target Heart Rate = 96 bpm + 60