Final answer:
The heart rate reserve (Karvonen method) equation is: Target HR = (Max HR - Resting HR) × % Intensity + Resting HR. This equation calculates the target heart rate during exercise using the maximum heart rate, resting heart rate, and the desired intensity level as a percentage.
Step-by-step explanation:
The heart rate reserve (Karvonen method) equation is: Target HR = (Max HR - Resting HR) × % Intensity + Resting HR.
This equation calculates the target heart rate during exercise using the maximum heart rate, resting heart rate, and the desired intensity level as a percentage. The maximum heart rate is estimated by subtracting the individual's age from a maximal value of 220 bpm. The resting heart rate is the heart rate at rest, and the % Intensity represents the desired workout intensity as a decimal.
For example, let's say a 40-year-old individual has a maximum heart rate of 180 bpm and a resting heart rate of 60 bpm. They want to exercise at an intensity level of 70%, so the target heart rate would be calculated as follows: (180 - 60) × 0.7 + 60 = 162 bpm. This means the person should aim to maintain a heart rate of approximately 162 bpm during their workout.