As It Is Presumed To Be.
Considerable research shows that specific training produces specific results.
The principle of specificity has been shown to apply to velocity, range or region of movement, type of muscle contraction, movement pattern, metabolism, flexibility regime, muscle fibre recruitment and biochemical adaptation. Thus, specificity makes one more adapted to a particular regime of training and less adapted to others. In evolutionary terms, adaptation occurs to ensure the survival of a given organism. Presumably, specific adaptation is a more efficient way of surviving and adapting to the environment. In sports, attempts to devise a system of training to simultaneously and equally develop strength, speed, power, endurance, etc have not yet proved very successful.