## 3 Results
### Surface Electromyography  
The integrated electromyography during the standing phase revealed that the vastus medialis muscle activity in Group I was 56.8 \(\pm\) 17.9 (%MVC), compared to 71.9 \(\pm\) 26.0 in Group II (_p_ = 0.17). The rectus femoris muscle activity was 27.2 \(\pm\) 14.9 and 31.9 \(\pm\) 9.8 in Groups I and II, respectively (_p_ = 0.44). The vastus lateralis muscle activity was 70.0 \(\pm\) 25.3 and 77.4 \(\pm\) 21.8, respectively (_p_ = 0.52). The semitendinosus muscle activity was 29.3 \(\pm\) 18.0 and 24.2 \(\pm\) 13.4 (_p_ = 0.51), and the bicep femoris muscle activity was 39.0 \(\pm\) 2 1.7 and 32.9 \(\pm\) 13.0, respectively (_p_ = 0.48) (Table 4).  
\begin{table}
\begin{tabular}{l c c c} \hline  & **Group I** & **Group II** & _p_**-Value** & **Control \({}^{*}\)** \\ \hline Vastus medialis & 56.8 \(\pm\) 17.9 & 71.9 \(\pm\) 26.0 & 0.17 & 84.9 \\ Rectus femoris & 27.2 \(\pm\) 14.9 & 31.9 \(\pm\) 9.8 & 0.44 & 76.4 \\ Vastus lateralis & 70.0 \(\pm\) 25.3 & 77.4 \(\pm\) 21.8 & 0.52 & 70.1 \\ Semitendinosus & 29.3 \(\pm\) 18.0 & 24.2 \(\pm\) 13.4 & 0.51 & 24.8 \\ Biceps femoris & 39.0 \(\pm\) 21.7 & 32.9 \(\pm\) 13.0 & 0.48 & 37.3 \\ Gluteus medius & 12.4 \(\pm\) 8.6 & 12.9 \(\pm\) 8.4 & 0.89 & - \\ \hline \end{tabular} Data are expressed as average \(\pm\) standard deviation. MVC, maximum voluntary isometric contraction; EMG, \({}^{*}\) Modified literature [45; 46].  
\end{table}
Table 4: Average maximum EMG value (% MVC) during the phase of standing.  
\begin{table}
\begin{tabular}{l c c c c} \hline  & **Group I** & **Group II** & _p_**-Value** & **Control \({}^{*}\)** \\ \hline Sit-to-stand time (s) & 1.1 \(\pm\) 0.3 & 1.2 \(\pm\) 0.2 & 0.32 & 1.9 \\ Maximum Knee-Extension Angular & 126.5 \(\pm\) 31.7 & 116.4 \(\pm\) 29.5 & 0.49 & 126.7 \\ Velocity (\({}^{\circ}\)/s) & & & & \\ Mean Knee-Extension Angular & 66.7 \(\pm\) 21.3 & 63.8 \(\pm\) 14.9 & 0.74 & - \\ Velocity (\({}^{\circ}\)/s) & & & & \\ Maximum Hip-Flexion Angle (\({}^{\circ}\)) & 80.2 \(\pm\) 11.1 & 81.7 \(\pm\) 7.5 & 0.74 & 76.2 \\ Maximum Knee-Flexion Angle (\({}^{\circ}\)) & 69.3 \(\pm\) 6.7 & 72.8 \(\pm\) 7.6 & 0.32 & 88.7 \\ Maximum Ankle-Flexion Angle (\({}^{\circ}\)) & 10.8 \(\pm\) 4.3 & 11.1 \(\pm\) 4.9 & 0.86 & - \\ \hline \end{tabular} Data are expressed as average \(\pm\) standard deviation. * Modified literature [44; 45].  
\end{table}
Table 2: Comparison of kinematic data.  
\begin{table}
\begin{tabular}{l c c c c} \hline  & **Group I** & **Group II** & _p_**-Value** & **Control \({}^{*}\)** \\ \hline Maximum knee-extension moment & 0.37 \(\pm\) 0.11 & 0.34 \(\pm\) 0.12 & 0.59 & 0.42 \\ (Nm/kg) & 0.23 \(\pm\) 0.18 & 0.16 \(\pm\) 0.14 & 0.34 & - \\ Maximum knee-varus moment & 0.03 \(\pm\) 0.06 & 0.04 \(\pm\) 0.03 & 0.54 & - \\ (Nm/kg) & & & & \\ Maximum hip-extension moment & 0.47 \(\pm\) 0.18 & 0.67 \(\pm\) 0.16 & 0.02 & 0.33 \\ Maximum vGRF (N/kg) & 5.5 \(\pm\) 0.5 & 5.93 \(\pm\) 0.4 & 0.06 & 5.95 \\ Mean vGRF (N/kg) & 4.06 \(\pm\) 0.5 & 4.68 \(\pm\) 0.4 & 0.01 & - \\ \hline \end{tabular} Data are expressed as average \(\pm\) standard deviation. vGRF, vertical ground reaction force. * Modified literature [45].  
\end{table}
Table 3: Average peak moment and vGRF.