Effectiveness of Muscular Work and Genetic Variants in Strength Gain of Ischiofemoral and Quadriceps

In the field of sports training and recovery, the work of muscular strength has become the star theme in terms of its influence on the performance of athletes. In fact, in relation to the training of the inferior members, the scientific evidence indicates that, to increase the other two physical qualities conditioned (speed and resistance), it is necessary to work and to increase the muscular strength. Randomized intervention trial with sample size of 80 subjects divided into 4 groups (n = 20) of muscular work: concentric, eccentric, concentric-eccentric and isometric. Ages between 21-23 years. For all the above, the investigators will study as a main objective analyze what type of muscular work is most effective in order to improve some variables of the performance of explosive muscular strength, and to try to determine if that improvement is due, exclusively to the developed training or to the genetics of the subjects and compare the results obtained in the variables of vertical jump, power of saint, horizontal jump and speed 60 meters, before and after the execution of each one of the muscular works dynamic among themselves, and compared to the muscular work isometric.