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Overload
This is where you exercise at a level above that which can be carried out comfortably. The
intensity, duration and frequency of exercise should be above the training threshold and
should be gradually increased as the body adapts to the increasing demands. As your
fitness level improves, so the training threshold should be raised.
Working through your program and gradually increasing the overload factor is important.
Specificity
Different forms of exercise produce different results. The type of exercise that is carried out
is specific both to the muscle groups being used and to the energy source involved.
There is little transfer of the effects of exercise, i.e. from strength training to cardiovascular
fitness. That is why it is important to have an exercise program tailored to your specific
needs.
Reversibility
If you stop exercising or do not do your program often enough, you will lose the benefits you
have gained. Regular workouts are the key to success.
Warm Up
Every exercise program should start with a warm up where the body is prepared for the effort
to come. It should be gentle and preferably use the muscles to be involved later.
Stretching should be included in both your warm up and cool down, and should be performed
after 3-5 minutes of low intensity aerobic activity or callisthenic type exercise.
Warm Down or Cool Down
This involves a gradual decrease in the intensity of the exercise session. Following exercise,
a large supply of blood remains in the working muscles. If it is not returned promptly o the
central circulation, pooling of blood may occur in the muscles
Heart Rate
As you exercise, so the rate at which your heart beat also increases. This is often used as a
measure of the required intensity of 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 fitness is important in developing an exercise program for you. If you are
starting off, you can get a good training effect with a heart rate of 110-120 beats per
minute(BPM). If you are fitter, 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 find 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,
so your heart, like other muscles, loses some of its efficiency. Some of its natural loss is won
back as fitness improves.
The following table is a guide to those who are “starting fitness”.
Age
25 30
35 40 45
50 55 60
65
Target heart Rate
10 Second Count 23 22
22 21 20
19 19 18
18
Beats per Minute 138 132 132 126 120 114 114 108 108
