Specificity principle: This principle states that strength must be stimulated through specific training, to achieve specific goals and obtain an exact result. For example, if you want to increase your calf muscle strength, it is necessary to establish specific training with a number of specific repetitions, specific interval and specific equipment for this result to be achieved.
Principle of progressive overload: This principle states that the intensity of the training should be increased in a progressive way, as the muscle gets used to the intensity that is being applied at the moment. This is because, the muscles get used to the intensity of the exercise and start to show no more results, being necessary to increase this intensity so that the muscle continues to be stimulated.
Principle of individuality: Affirms that each exercise must be established individually for each person and muscle. This allows the training to be established taking into account the individual's goals, needs and wants in relation to the stimulated muscle.
Variability principle: It states that in the beginning, training to stimulate muscle strength should be performed in short periods, so as not to overload the muscle and cause injuries. Once the individual is adapted to this period, this time may vary according to this adaptation, preventing the muscle from becoming stagnant.
Maintenance principle: Affirms that, once the muscle is stimulated to the point that the individual has reached its goal, the training intensity can be reduced to a level that allows the muscle to stagnate, that is, the individual will train just to maintain what has already been achieved.
Reversibility principle: It states that if the training is interrupted and the individual does not maintain, at least, at least one maintenance training, his muscle will fully return to the stage it had before starting to train muscle strength.
