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What is the equation to measure target heart rate?

  1. THR = (MHR - RHR) x % intensity

  2. THR = (HRR - % intensity) + RHR

  3. THR = (MHR x % intensity) + RHR

  4. THR = (RHR + % intensity) - MHR

The correct answer is: THR = (HRR - % intensity) + RHR

The correct answer for measuring target heart rate is that the equation involves using the heart rate reserve (HRR), which is calculated by subtracting resting heart rate (RHR) from maximum heart rate (MHR). The target heart rate (THR) can be assessed through the heart rate reserve method, expressed mathematically as follows: THR = (HRR x % intensity) + RHR. This formula allows individuals to assess their target heart rate for exercise by first determining their HRR, which provides a more individualized approach to setting exercise intensity compared to using MHR alone. This method is valuable because it takes into account an individual's resting heart rate, making it more accurate and personalized for determining appropriate exercise intensity. Thus, the approach in option B effectively reflects the combination of RHR and the percentage of HRR, linking it directly to the intensity of the exercise. This method ensures that one's exercise intensity aligns with their cardiovascular fitness levels and promotes safe and effective training.