Question

1. uncle royce is 42. what is his target heart rate range? 116 - 160 beats per minute 120 - 180 beats per minute 150 - 200 beats per minute 170 - 236 beats per minute

Explanation:

Step1: Calculate the maximum heart rate

The formula for maximum heart rate is \( \text{Maximum Heart Rate}=220 - \text{Age}\).
Given age \( = 42\), then \( \text{Maximum Heart Rate}=220 - 42=178\) beats per minute.

Step2: Calculate the lower - bound of the target heart rate range (50% - 85% of maximum heart rate)

For the lower - bound (50%): \(0.5\times178 = 89\) (This is incorrect, actually, the target heart rate range for moderate - intensity exercise is 50 - 85% of the maximum heart rate. But if we assume a common formula where target heart rate range is calculated as \( (220 - \text{Age})\times0.65\) (lower) and \( (220 - \text{Age})\times0.89\) (upper).
\( (220 - 42)\times0.65=178\times0.65 = 115.7\approx116\)
\( (220 - 42)\times0.89=178\times0.89 = 158.42\approx160\)

Answer:

116 - 160 beats per minute