Final answer:
The 85% HRR (Heart Rate Reserve) can be calculated by subtracting the resting heart rate from the maximum heart rate and then multiplying it by 0.85. In this case, the individual is 50 years old with a resting heart rate of 60 bpm. The 85% HRR is 93.5 bpm.
Step-by-step explanation:
The 85% HRR (Heart Rate Reserve) can be calculated by subtracting the resting heart rate from the maximum heart rate and then multiplying it by 0.85. In this case, the individual is 50 years old with a resting heart rate of 60 bpm. Using the estimated maximum heart rate formula (220 - age), the maximum heart rate would be 170 bpm. To find 85% HRR, subtract the resting heart rate from the maximum heart rate (170 bpm - 60 bpm = 110 bpm), and then multiply it by 0.85. The result is 93.5 bpm.