## 4 Discussion  
Increasing the general public's risk of knee injury from sports activities lies in incorrect epidemiological movements and disproportionate muscle function. It is considered important to understand the biomechanics of physical movements necessary for sports \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**Variables**} & \multirow{2}{*}{**Group**} & \multicolumn{2}{c}{**Intervention**} & \multicolumn{2}{c}{**Mean Change**} & \multicolumn{2}{c}{\(p\) (\(\eta^{2}\)) Value**} \\ \cline{3-8}  & & **Before** & **After** & **95\% CI** & **Group** & **Time** & **Interaction** \\ \hline Quadriceps femoris & GRE & 121.70 \(\pm\) 44.48 & 139.42 \(\pm\) 48.06 & 17.72 [\(-\)13.15, 48.59] & 0.268 & 0.005 & 0.279 \\ strength (N-M) & BFR & 94.08 \(\pm\) 35.89 & 131.08 \(\pm\) 47.23 & 37.00 [14.46, 59.54] ** & (0.056) & 0.311 \(\dagger\) & (0.053) \\ \hline Hamstring strength & GRE & 66.43 \(\pm\) 22.90 & 72.10 \(\pm\) 18.22 & 5.67 [\(-\)6.92, 18.25] & 0.770 & 0.000 & 0.006 \\ (N-M) & BFR & 53.17 \(\pm\) 22.25 & 80.50 \(\pm\) 23.73 & 27.33 [18.27, 36.40] ** & (0.004) & (0.499) \(\dagger\) & (0.301) \(\dagger\) \\ \hline Quadriceps femoris & GRE & 648.86 \(\pm\) 234.07 & 700.29 \(\pm\) 224.12 & 51.43 [\(-\)121.89, 224.76] & 0.325 & 0.015 & 0.088 \\ endurance (J) & BFR & 632.08 \(\pm\) 277.06 & 899.83 \(\pm\) 322.70 & 267.75 [65.56, 469.94] * & (0.044) & (0.240) \(\dagger\) & (0.127) \\ \hline Hamstring & GRE & 377.34 \(\pm\) 146.88 & 412.31 \(\pm\) 117.34 & 34.97 [\(-\)53.01, 122.95] & 0.043 & 0.001 & 0.008 \\ endurance (J) & BFR & 414.08 \(\pm\) 178.12 & 633.33 \(\pm\) 207.91 & 219.25 [112.21, 326.29] ** & (0.173) \(\dagger\) & (0.426) \(\dagger\) & (0.280) \(\dagger\) \\ \hline  & \multicolumn{2}{c}{Values are expressed as the mean \(\pm\) standard deviation. GRE, general rehabilitation exercise group; BFR, blood flow restriction group; N-M, Newton-Meters; J, Joule. Significant interaction or main effect: \(p\) < 0.05; Significant difference via rehabilitation intervention in each group: \(p\) < 0.05, ** \(p\) < 0.01, ** \(p\) < 0.001.} & \multicolumn{1}{c}{} & & \\ \end{tabular}
\end{table} 
Table 4: Changes in isokinetic muscle function via rehabilitation intervention in each group. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Variables**} & \multirow{2}{*}{**Group**} & \multicolumn{2}{c}{**Intervention**} & \multicolumn{2}{c}{**Mean Change**} & \multicolumn{2}{c}{\(p\) (\(\eta^{2}\)) Value**} \\ \cline{3-8}  & & **Before** & **After** & **95\% CI** & **Group** & **Time** & **Interaction** \\ \hline VMO isokinetic & GRE & 177.79 \(\pm\) 66.42 & 186.00 \(\pm\) 65.98 & 8.21 [\(-\)54.90, 71.33] & 0.334 & 0.003 & 0.009 \\ contraction (mV) & BFR & 148.49 \(\pm\) 42.84 & 255.95 \(\pm\) 82.82 & 107.47 [63.87, 151.06] ** & (0.042) & (0.334) \(\dagger\) & (0.269) \(\dagger\) \\ \hline VLO isokinetic & GRE & 223.72 \(\pm\) 125.83 & 253.26 \(\pm\) 104.75 & 29.54 [\(-\)26.41, 85.48] & 0.957 & 0.072 & 0.966 \\ contraction (mV) & BFR & 225.04 \(\pm\) 73.96 & 255.95 \(\pm\) 82.82 & 30.91 [\(-\)12.01, 73.83] & (0.000) & (0.139) & (0.000) \\ \hline RF isokinetic & GRE & 178.93 \(\pm\) 74.05 & 204.48 \(\pm\) 74.85 & 25.58 [\(-\)13.24, 64.33] & 0.780 & 0.019 & 0.843 \\ contraction (mV) & BFR & 184.14 \(\pm\) 67.75 & 214.09 \(\pm\) 61.09 & 29.96 [01], 59.00] * & (0.004) & (0.224) \(\dagger\) & (0.002) \\ \hline  & \multicolumn{2}{c}{Values are expressed as the mean \(\pm\) standard deviation. GRE, general rehabilitation exercise group; BFR, blood flow restriction group; VMO, vastus medialis oblique; VLO, vastus lateralis oblique; RF, rectus femoris. Significant interaction or main effect: \(\dagger\)\(p\) < 0.05; Significant difference via rehabilitation intervention: \(\dagger\)\(p\) < 0.05, ** \(p\) < 0.01, ** \(p\) < 0.001.} & \multicolumn{1}{c}{} & & \\ \end{tabular}
\end{table} 
Table 3: Changes in muscle activity of VMO, VLO and RF during isokinetic contraction via rehabilitation intervention in each group.