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What is the equation to measure heart rate reserve?

  1. HRR = RHR + MHR

  2. HRR = MHR x RHR

  3. HRR = MHR - RHR

  4. HRR = MHR + RHR

The correct answer is: HRR = MHR - RHR

Heart rate reserve (HRR) is calculated by subtracting the resting heart rate (RHR) from the maximum heart rate (MHR). This method reflects the range of heart rate that an individual can use during physical activity, helping to determine appropriate exercise intensity. The maximum heart rate is typically estimated using the formula 220 minus the individual's age, while the resting heart rate is measured when the person is at rest, usually after waking up in the morning. By calculating HRR, health coaches can tailor exercise programs more effectively, ensuring that the individual trains within a specific and beneficial heart rate range. This calculation helps gauge how much heart rate can increase from its resting state, which is critical for designing appropriate exercise intensities for clients based on their fitness levels and goals. Understanding HRR is essential for promoting cardiovascular fitness while minimizing the risk of overexertion or injury.