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The principle of specificity states that sports training should be relevant and appropriate to the sport for which the individual is training in order to produce the desired effect. Additionally, training should progress from general conditioning to specific training for the particular skills required in that sport or activity.

Essentially, specificity training means that you must perform the skill in order to get better at it. It is the principle behind that old saying, “practice makes perfect.”

In order to perform most sports and physical activities, you need a base level of fitness. The specificity principle of sports conditioning comes into play when an athlete wishes to excel in a specific sport or activity.1 Your training must go from highly general—such as lifting weights and cardio—to very specific so it includes performing that exercise or skill. For instance, to be a good cyclist, you must cycle. A runner should train by running, and a swimmer should train by swimming.

SOURCE:

https://www.verywellfit.com/principle-of-specificity-definition-3120375