Question

Given: A 50-year-old man with a resting heart rate of 70 beats/min and a maximal HR of 180 beats/min. What is the target heart rate range as determined by the percentage of maximal heart rate method if exercise intensity is set at 60-80% HRmax?

Answer 1

To determine the target heart rate range for the 50-year-old man at 60-80% of his maximal HR of 180 beats/min, we calculate the lower limit as 60% of 180 = 108 beats/min, and the upper limit as 80% of 180 = 144 beats/min. Therefore, his target range is 108-144 beats/min.

Step-by-step explanation:

The subject of this question is determining the target heart rate range for a 50-year-old man with a given resting and maximal heart rate (HR) during exercise. To find the target range at 60-80% of his maximal HR, we first consider his maximal HR, which is given as 180 beats/min. Then, we calculate 60% and 80% of this value:

• 60% of 180 beats/min = 0.60 × 180 = 108 beats/min
• 80% of 180 beats/min = 0.80 × 180 = 144 beats/min

Therefore, the target heart rate range for exercise intensity set at 60-80% HRmax for this individual is between 108 and 144 beats/min.