Final answer:
To find the target heart rate range for a 20-year-old with a resting heart rate, calculate the Maximum Heart Rate, Heart Rate Reserve, and apply intensity levels to determine the target heart rates.
Explanation:
To calculate the target heart rate range for a 20-year-old college student with a resting heart rate of 64, follow these steps:
- Calculate Maximum Heart Rate (MHR) = 220 - 20 (age) = 200
- Calculate Heart Rate Reserve (HRR) = MHR - Resting Heart Rate = 200 - 64 = 136 bpm
- For 60% intensity: (HRR x 0.60) + Resting Heart Rate = Lower Target Heart Rate, (136 x 0.60) + 64 = 143 bpm
- For 80% intensity: (HRR x 0.80) + Resting Heart Rate = Upper Target Heart Rate, (136 x 0.80) + 64 = 176 bpm
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