Final answer:
To calculate Wei's target heart rate range using the percentage of the maximal heart rate method, subtract Wei's age from 220 bpm to find the maximal heart rate, then multiply the maximal heart rate by a percentage to find the lower and upper bounds of the target heart rate range.
Step-by-step explanation:
To calculate the target heart rate (THR) range using the percentage of the maximal heart rate (HR) method, you first need to find the maximal HR.
The maximal HR can be estimated by subtracting the individual's age from 220 bpm. In this case, if Wei's maximal HR is 206 bpm, then their age would be 220 - 206 = 14 years.
Next, you can calculate the THR range by multiplying the maximal HR by a percentage. Common percentages used are 50-85%.
So, for example, if you want to find the lower end of the THR range using 60% of the maximal HR, you would multiply 206 bpm by 0.6 to get 123.6 bpm. To find the upper end of the THR range using 85% of the maximal HR, you would multiply 206 bpm by 0.85 to get 175.1 bpm.