## 3 Results
### DNA-Based Analysis of CMJ Performance
#### 3.2.3. Concentric Mean Force  
The genotype distribution of the muscle performance genes in the concentric mean force responder's football players group, when compared with the non-responder's players, was statistically significant for ACTN3 c.1729C\(>\)T polymorphism (\(p\) = 0.042), showing a higher frequency in the \"worse\" genotype than in non-responder's players (TT 63.0%) than the responder's (TT 20.0%), Also, statistical differences were found in AMPD1 c.334C\(>\)T polymorphism (\(p\) = 0.022), showing a higher frequency of the \"optimal\" genotype in the non-responder players (CC 81.5%) than in the responder players (CC 40.0%), as well as the responder players showing a higher frequency of the \"heterozygous\" genotype (CT 60.0%) than the non-responder players (CT 14.8%). Similar results were found in MLCK c.37885C\(>\)A polymorphism (\(p\) = 0.022), showing a higher frequency of the \"heterozygous\" genotype in responder players (CA 30.0%) than in non-responder players (CA 3.7%), as well as non-responder players showing a higher frequency of the \"worse\" genotype (AA 96.6%) than the responder players (AA 70.0%). No differences were shown in the other muscle performance polymorphisms between responder and non-responder players (Table 5). \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Symbol** & **Gene** & **Polymorphism** & **dbSNP** & **Genotype** & **Responder** & **Non-Responder** & \(p\) **Value** \\ \hline \multirow{2}{*}{_ACE_} & \multirow{2}{*}{Angiotensin-converting enzyme} & \multirow{2}{*}{I/D} & \multirow{2}{*}{rs4646994} & DD & \(8\) (57.1\%) & \(15\) (65.2\%) & \\  & & & & ID & \(5\) (35.7\%) & \(7\) (30.4\%) & 0.864 \\  & & & & II & \(1\) (7.1\%) & \(1\) (4.3)\% & \\ \hline \multirow{3}{*}{_ACTN3_} & \multirow{3}{*}{Alpha-actinin-3} & \multirow{3}{*}{c.1729C\(>\)T} & \multirow{3}{*}{rs1815739} & CC & \(5\) (35.7\%) & \(5\) (21.7\%) & \\  & & & & CT & \(4\) (28.6\%) & \(4\) (17.4\%) & 0.332 \\  & & & & TT & \(5\) (35.7\%) & \(14\) (60.9\%) & \\ \hline \multirow{3}{*}{_AMPD1_} & \multirow{3}{*}{Adenoise monophosphate deaminase 1} & \multirow{3}{*}{c.34C\(>\)T} & \multirow{3}{*}{rs17602729} & CC & \(8\) (57.1\%) & \(18\) (78.3\%) & \\  & & & & CT & \(6\) (42.9\%) & \(4\) (17.4\%) & 0.197 \\  & & & & TT & \(0\) (0.0\%) & \(1\) (4.3\%) & \\ \hline \multirow{3}{*}{_CKM_} & \multirow{3}{*}{Muscle-specific creatine kinase} & \multirow{3}{*}{c.*800A\(>\)G} & \multirow{3}{*}{rs8111989} & GC & \(1\) (7.1\%) & \(2\) (8.7\%) & \\  & & & GA & \(5\) (35.7\%) & \(7\) (30.4\%) & 0.941 \\  & & & AA & \(8\) (57.1\%) & \(14\) (60.9\%) & \\ \hline \multirow{3}{*}{_MLCK_} & \multirow{3}{*}{Myosin light chain kinase} & \multirow{3}{*}{c.49C\(>\)T} & \multirow{3}{*}{rs2700352} & CC & \(10\) (71.4\%) & \(15\) (65.2\%) & \\  & & & & CT & \(4\) (28.6\%) & \(8\) (34.8\%) & 0.739 \\ \cline{1-1}  & & & & TT & \(0\) (0.0\%) & \(0\) (0.0\%) & \\ \cline{1-1} \cline{2-7}  & & & & & CT & \(0\) (0.0\%) & 0 (0.0\%) & \\ \cline{1-1} \cline{2-7}  & & & & & CA & \(3\) (21.4\%) \(\uparrow\) & \(1\) (4.3\%) \(\downarrow\) & 0.035 \\ \cline{1-1}  & & & & AA & \(11\) (78.6\%) \(\downarrow\) & \(22\) (91.3\%) \(\uparrow\) & \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Genotype distribution in the responder and non-responder football players in concentric mean power for the muscle performance polygenic profile.