NETA Personal Trainer Practice Exam

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What method does Karvonen theory use to calculate target heart rate?

HRmax + resting heart rate
(HRR) x target intensity + HRmax
(HRmax - resting heart rate) x target intensity + resting heart rate
(HRR + resting heart rate) x target intensity

The correct answer is: (HRmax - resting heart rate) x target intensity + resting heart rate

The Karvonen method calculates the target heart rate using the difference between the maximum heart rate and the resting heart rate, which is referred to as the heart rate reserve (HRR). To determine the target heart rate, the formula utilizes the desired target intensity level as a percentage of this heart rate reserve. The correct approach per Karvonen theory involves taking the heart rate reserve (HRR), which is the maximum heart rate minus the resting heart rate, and multiplying it by the desired intensity (expressed as a decimal). Then, you add the resting heart rate back to this product. This results in a personalized target heart rate that accounts for both the individual's resting heart rate and desired level of effort. This method is widely used because it considers an individual's fitness level by incorporating their resting heart rate, leading to a more precise estimation of exercise intensity compared to methods that do not include this factor.