Specificity

Specificity means making training specific to the sport, movements, muscles and energy systems used. An energy system is a way the body supplies energy for exercise; different activities place different demands on these systems.

The four principles are specificity, progression, overload and reversibility, remembered using SPOR. They work together: suitable training challenges the body, the body adapts, and the challenge must then increase gradually. If sufficient training is no longer maintained, those improvements can be lost.