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List and briefly describe each of the five strength training principles.

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.

Explanation:

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    however, coronary heart disease , or chd, is actually a result of coronary artery disease, or cad, said edward a. fisher, m.d., ph.d., m.p.h., an american heart association volunteer who is the leon h. charney professor of cardiovascular medicine and also of the marc and ruti bell vascular biology and disease program at the nyu school of medicine.

  with coronary artery disease, plaque first grows within the walls of the coronary arteries until the blood flow to the heart’s muscle is limited. view an illustration of coronary arteries. this is also called ischemia. it may be chronic, narrowing of the coronary artery over time and limiting of the blood supply to part of the muscle. or it can be acute, resulting from a sudden rupture of a plaque and formation of a thrombus or blood clot.

    the traditional risk factors for coronary artery disease are high ldl cholesterol, low hdl cholesterol, high blood pressure, family history, diabetes, smoking, being post-menopausal for women and being older than 45 for men, according to fisher. obesity may also be a risk factor.

    “coronary artery disease begins in childhood, so that by the teenage years, there is evidence that plaques that will stay with us for life are formed in most people,” said fisher, who is former editor of the american heart association journal, atvb. “preventive measures instituted early are thought to have greater lifetime benefits. healthy lifestyles will delay the progression of cad, and there is hope that cad can be regressed before it causes chd.”

  living a healthy lifestyle that incorporates good nutrition, weight management and getting plenty of physical activity can play a big role in avoiding cad.

    “coronary artery disease is preventable,” agreed johnny lee, m.d., president of new york heart associates, and an american heart association volunteer. “typical warning signs are chest pain, shortness of breath, palpitations and even fatigue.” if you feel any of these symptoms, don’t delay — call 9-1-1.