This study aims to identify the relationship between the ACTN3 gene, maximum strength and explosive power of the muscles through maximum strength tests with weights and some explosive power tests. The sample of this study included 9 individuals including 8 of whom junior (at the age of 12: 14 years), in addition to a international wrestler. To test whether this gene has the ability to predict the wrestler's level of muscle strength through comparing the lengths of the gene under study in the junior and the international wrestler by using restriction enzymes.
The main results indicated that there are 8 enzymes succeeded in differentiating between the international wrestler and junior wrestlers in the length of this gene, while 4 didn't succeed . The results also indicated that the gene ACTN3 (R577X) can predict the expected level of muscle strength of the junior wrestlers where there are 2 juniors are similar to a great extent in length of gene ACTN3 with international wrestler. Which led to the similarity in the constituent amino acids for muscle protein, which indicates the existence of a direct relationship between some maximum muscle strength tests and explosive power on one hand and the length of ACTN3 gene from the other.
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