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 heart rate reserve method if exercise intensity is set at 40-60% HRR?

Answer 1

The target heart rate range is 118-142 beats/min.

Step-by-step explanation:

The target heart rate range as determined by the heart rate reserve method for a 50-year-old man with a resting heart rate of 70 beats/min and a maximal heart rate of 180 beats/min, and exercise intensity set at 40-60% HRR, can be calculated using the formula:

(Max HR - Resting HR) × Intensity + Resting HR

where:

• Max HR is the maximal heart rate (180 beats/min)
• Resting HR is the resting heart rate (70 beats/min)
• Intensity is the exercise intensity set at 40-60% HRR (0.4-0.6)

Plugging in the values, we get:

(180 - 70) × 0.4 + 70 = 118 beats/min

(180 - 70) × 0.6 + 70 = 142 beats/min

Therefore, the target heart rate range is 118-142 beats/min.