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9
HEART RATE
As you exercise, your heart beat increases. is is often used as a measure of the required intensity of
an exercise. You need to exercise hard enough to condition your circulatory system, and increase your
pulse rate, but not enough to strain your heart.
Your initial level of tness is important when developing an exercise program for you. When starting,
you can get a good training eect with a heart rate of 110-120 beats per minute (BPM). If you are
more t, you will need a higher threshold of stimulation.
To begin with, you should exercise at a level that elevates your heart rate to about 65 to 70% of your
maximum. If you nd this is too easy, you may want to increase it, but it is better to lean on the
conservative side.
As a rule of thumb, the maximum heart rate is 220 minus your age. As you increase in age, your
heart, like other muscles, loses some of its eciency. Some of its natural loss is won back as tness
improves. e following table is a guide to those who are “starting tness.”
Age Target Heart Rate 25 30 35 40 45 50 55 60 65
10 Second Count 23 22 22 21 20 19 19 18 18
Beats per Minute 138 132 132 126 120 114 114 108 108
PULSE COUNT
e pulse count (on your wrist or carotid artery in the neck, taken with two index ngers) is done
for ten seconds, taken a few seconds after you stop exercising. is is for two reasons: (a) 10 seconds
is long enough for accuracy, (b) the pulse count is to approximate your BPM rate at the time you are
exercising. Since heart rate slows as you recover, a longer count isn’t as accurate.
e target is not a magic number, but a general guide. If you’re above average with your tness, you
may work comfortably a little above that suggested for your age group. e following table is a guide.
Age Target Heart Rate 25 30 35 40 45 50 55 60 65
10 Second Count 26 26 25 24 23 22 22 21 20
Beats per Minute 156 156 150 144 138 132 132 126 120
Don’t push yourself too hard to reach the gures on this table. It can be very uncomfortable if you
over exercise. Let it happen naturally as you work through your program. Remember, the target is a
guide, not a rule, a little above or below is just ne.
Two nal comments: (1) don’t be concerned with day to day variations in your pulse rate, being
under pressure or not enough sleep can aect it; (2) your pulse rate is a guide, don’t become a slave
to it.
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