Answer: A 50-yr old man who weighs 193lbs and has a resting heart rate of 70 beats . min-1 wants you to help him calculate his target heart rate zone for 60% to 80% VO2R. Use the Karoven (heart rate range) method to do so.
The answer is;
130 to 150 bpm
Explanation: HRmax= 220-50 = 170bpm
HRR= 170-70 = 100bpm
60% HRR: 100 × 0.6 = 60
80% HRR: 100 × 0.8 = 80
Target HR = % HRR + HRrest: 60+70 = 130 and 80+70 = 150
HRR- Heart rate range
HR- Heart rate
HRrest- Heart rate rest
HRmax- Maximum heart rate
