ISSN: 2640-2734
Authors: Gonzalez Duarte LA*
To prepare the force must consider gender , age and strength muscle of the muscle planes , as well as the TECHNIC to the execution of the exercises, because as long as teens grow and develop, increase their strength correspondence and l development and maturation of regulatory and musculoskeletal systems. E l sex and age on muscle strength has been very studied, agreeing that increases this capacity until the age of 20 or 30, being between 25 and 30 years where the greatest muscular strength is reached and from the age of 30 its growth begins to slow down. With regard to sex, it is known that girls after the age of 16 are two-thirds as strong as boys and that boys are somewhat stronger at puberty.
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