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Progression
The principle of progression works in concert with overload. As the individual begins applying overload, improvement will soon begin to be seen. If improvement is to continue, progressively greater demands
must be made.
This is how overload and progression can be attained in a volleyball training program. In each specific demand area, overloading and progression remain the two underlying principles.
Cardiovascular endurance training requires overloading the large muscle groups of the body, which creates a demand for more oxygen. That demand is met by overloading specifically the respiratory and circulatory systems, resulting in the conditioning of these two vital systems. Overloading for cardiovascular development can be achieved by increasing the rate of speed of the exercise or the distance covered or by combining the two options. This is precisely what jogging, cycling and long-distance swimming aim at and accomplish.
Muscular endurance training requires the overloading of specific muscle groups. The purpose of the overloading is to strengthen the muscles and build tolerance to the strain of work and the resulting anaerobic metabolism taking place. Overloading for muscular endurance is achieved by increasing the work load on the muscles increasing the repetitions of the specific activity, decreasing the rest intervals between repetitions, or by a combination of any of the three overload methods.
Overloading in flexibility training is accomplished by slowly increasing the range of motion though which the joint and specific muscle group are progressively stretching.
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Principle of Training
