The most essential factor for improving cardiorespiratory physical fitness (cardio or CR) is the intensity of the workout. Changes in CR fitness are directly related to how “hard” an aerobic exercise is performed. The more energy expended per unit of time, the higher the intensity of the exercise, the greater the effect on cardiorespiratory physical fitness.
You have to know how hard is “hard” to determine if an aerobic exercise like running is producing a CR instruction impact or if it’s just burning a few calories. The heart rate during work or physical exercise is an superb indicator of how much effort you are exerting. Your capability to monitor your pulse rate is the single most important key to success in CR training.
Training Heart Rate (THR) = Desired Intensity from the Workout
THR is the heart rate at which you need to exercise to get a training effect. The U.S. Army physical fitness gurus have given us two methods to figure out THR. The first technique, percent maximum heart rate (%MHR) is simpler to use.
%MHR Method
With this technique the THR is figured utilizing the estimated maximal heart rate. You can estimate your optimum heart rate (MHR) by subtracting your age from 220. Thus, a 20 year old would have an estimated optimum heart rate (MHR) of 200 beats per minute (220 – 20 = 200).Although the %HRR is more accurate.
A person who is in bad shape ought to exercise at 70 percent of his MHR; if he is in relatively good shape, at 80 percent MHR; and, if he is in superb shape, at 90 % MHR.
Examples:
A 20 year old in good physical situation would have a THR of 160 beats per minute (BPM). 220 – 20 = 200 * .80 = 160 BPM.
A 30 year old in good physical situation would have a THR of 152 beats per minute (BPM). 220 – 30 = 190 * .80 = 152 BPM.
A 40 year old in bad physical situation would have a THR of 126 beats per minute (BPM). 220 – 40 = 180 * .70 = 126 BPM.
%HRR Technique
A more accurate method to calculate THR may be the %HRR method. The range from 60 to 90 %HRR may be the THR range in which individuals should exercise to improve their CR physical fitness levels. Should you know your general level of CR physical fitness, you are able to determine which percentage of HRR is a great starting point
for you. For instance, an individual in excellent physical condition could begin at 85 % of his HRR; if he is in reasonably great shape, at 70 % HRR; and, if he is in bad form, at 60 percent HRR.
Use this knowlegde and apply it in your everyday exercise.
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