Question

Uncle Royce is 42. What is his target heart rate range?
Group of answer choices

170 – 236 beats per minute

116 – 160 beats per minute

150 – 200 beats per minute

120 – 180 beats per minute

Answer 1

To calculate Uncle Royce's target heart rate range, we first need to determine his maximum heart rate. The maximum heart rate can be estimated using the formula:

**Maximum Heart Rate (MHR) = 220 - Age**

For Uncle Royce, who is 42 years old:

**MHR = 220 - 42 = 178 beats per minute**

The target heart rate range during moderate to vigorous exercise is typically 50-85% of the maximum heart rate.

Calculating 50% and 85% of Uncle Royce’s maximum heart rate:
- 50% of MHR: **0.50 x 178 ≈ 89 beats per minute**
- 85% of MHR: **0.85 x 178 ≈ 151 beats per minute**

Thus, his target heart rate range would be approximately **89 to 151 beats per minute**.

However, none of the answer choices provided match this exact range. Given the provided options, the closest would be:

**116 – 160 beats per minute.**

This is because it reasonably encompasses the higher end of his target heart rate zone, though it does underestimate the lower end. So, the most appropriate answer based on the provided options would be:

**116 – 160 beats per minute.**