Overload - Training must be raised to a higher level than normal to create the extra demands to which your body will adapt
Specificity - Training must be specific to the sport or activity, the type of fitness required and the particular muscle groups
Progression - As your body adapts to training, you progress to a new level of fitness. To then take this to the "next level", a gradual increase in intensity is needed to create an overload
Reversibility - The effects of training are reversible. If exercise is reduced in intensity or even stopped, the benefit can be lost quickly
TrainingProgram - methodological scientific procedure to help the athletes to achieve high level of trainings and performance