Question: Describe how to conduct the Rockport walk test. John (male, age 35, weight 180 lbs, RHR 75) completed the test in 12 minutes, and his pulse was 175 bpm. How do John's results compare to other individuals of similar age and sex? Determine John's target heart rate range (at 60% and 80%) based on the heart rate reserve (HRR) method.