# Test-Retest Intra-Session Reliability of Isokinetic Knee Strength Measurements in Obese Children
## 3 Results
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline  & \multirow{2}{*}{**Test**} & \multicolumn{3}{c}{**Peak Torque (Nm)**} & \multicolumn{3}{c}{**Work (J)**} \\ \cline{3-8}  & **Measurement** & **Test** & **Retest** & \(P\) & **Test** & **Retest** & \(p\)** \\ \cline{2-8}  & \multirow{2}{*}{\begin{tabular}{c} Concentric \\ Extension Test \\ \end{tabular} } & \multirow{2}{*}{\(58.16\pm 21.49\)} & \multirow{2}{*}{\(57.12\pm 21.45\)} & \multirow{2}{*}{\(0.175\)} & \multirow{2}{*}{\(59.28\pm 22.41\)} & \multirow{2}{*}{\(57.47\pm 22.01\)} & \multirow{2}{*}{\(0.070\)} \\  & & & & & & \\ \cline{2-8}  & \multirow{2}{*}{\begin{tabular}{c} Concentric \\ Extension Test \\ \end{tabular} } & \multirow{2}{*}{\(29.08\pm 10.38\)} & \multirow{2}{*}{\(29.11\pm 9.52\)} & \multirow{2}{*}{\(0.963\)} & \multirow{2}{*}{\(29.91\pm 11.93\)} & \multirow{2}{*}{\(30.35\pm 11.14\)} & \multirow{2}{*}{\(0.669\)} \\  & & & & & & \\ \hline \multirow{4}{*}{\begin{tabular}{c} Concentric \\ Extension Test \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Test** \\ \end{tabular} } & \multicolumn{3}{c}{**Peak Torque (Nm)**} & \multicolumn{3}{c}{**Work (J)**} \\ \cline{3-8}  & **Measurement** & **Test** & **Retest** & \(P\) & **Retest** & **Test** & \(p\)** \\ \cline{2-8}  & \multirow{2}{*}{\begin{tabular}{c} Concentric \\ Extension Test \\ \end{tabular} } & \multirow{2}{*}{\(1.34\pm 0.38\)} & \multirow{2}{*}{\(1.32\pm 0.39\)} & \multirow{2}{*}{\(0.164\)} & \multirow{2}{*}{\(1.37\pm 0.39\)} & \multirow{2}{*}{\(1.32\pm 0.37\)} & \multirow{2}{*}{\(0.046\)} \\  & & & & & & \\ \cline{2-8}  & \multirow{2}{*}{\begin{tabular}{c} Concentric \\ Extension Test \\ \end{tabular} } & \multirow{2}{*}{\(0.68\pm 0.20\)} & \multirow{2}{*}{\(0.68\pm 0.17\)} & \multirow{2}{*}{\(0.892\)} & \multirow{2}{*}{\(0.70\pm 0.24\)} & \multirow{2}{*}{\(0.70\pm 0.22\)} & \multirow{2}{*}{\(0.762\)} \\  & & & & & & \\ \hline \multirow{4}{*}{\begin{tabular}{c} Concentric \\ Extension Test \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Test** \\ \end{tabular} } & \multicolumn{3}{c}{**Peak Torque (Nm)**} & \multicolumn{3}{c}{**Work (J)**} \\ \cline{3-8}  & **Measurement** & **Test** & **Retest** & \(P\) & **Retest** & **Test** & \(p\)** \\ \cline{2-8}  & \multirow{2}{*}{\begin{tabular}{c} Concentric \\ Extension Test \\ \end{tabular} } & \multirow{2}{*}{\(2.31\pm 0.64\)} & \multirow{2}{*}{\(2.27\pm 0.65\)} & \multirow{2}{*}{\(0.157\)} & \multirow{2}{*}{\(2.35\pm 0.66\)} & \multirow{2}{*}{\(2.28\pm 0.65\)} & \multirow{2}{*}{\(0.053\)} \\  & & & & & & \\ \cline{1-1} \cline{3-8}  & \multirow{2}{*}{\begin{tabular}{c} Concentric \\ Extension Test \\ \end{tabular} } & \multirow{2}{*}{\(1.17\pm 0.34\)} & \multirow{2}{*}{\(1.17\pm 0.29\)} & \multirow{2}{*}{\(0.955\)} & \multirow{2}{*}{\(1.20\pm 0.41\)} & \multirow{2}{*}{\(1.21\pm 0.37\)} & \multirow{2}{*}{\(0.740\)} \\ \cline{1-1} \cline{3-8}  & & & & & & \\ \cline{1-1} \cline{3-8}  & \multirow{2}{*}{\
\begin{tabular}{c} Concentric \\ Extension Test \\ \end{tabular} } & \multirow{2}{*}{\(2.31\pm 0.64\)} & \multirow{2}{*}{\(2.27\pm 0.65\)} & \multirow{2}{*}{\(0.157\)} & \multirow{2}{*}{\(2.35\pm 0.66\)} & \multirow{2}{*}{\(2.28\pm 0.65\)} & \multirow{2}{*}{\(0.053\)} \\ \cline{1-1} \cline{3-8}  & & & & & & \\ \cline{1-1} \cline{3-8}  & \multirow{2}{*}{
\begin{tabular}{c} Concentric \\ Extension Test \\ \end{tabular} } & \multirow{2}{*}{\(1.17\pm 0.34\)} & \multirow{2}{*}{\(1.17\pm 0.29\)} & \multirow{2}{*}{\(0.955\)} & \multirow{2}{*}{\(1.20\pm 0.41\)} & \multirow{2}{*}{\(1.21\pm 0.37\)} & \multirow{2}{*}{\(0.740\)} \\ \cline{1-1} \cline{3-8}  & & & & & & \\ \cline{1-1} \cline{3-8}  & & & & & & \\ \cline{1-1} \cline{3-8}  & & & & & & \\ \cline{1-1} \cline{3-8}  & & & & & & \\ \cline{1-1} \cline{3-8}  & & & & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Summary of isokinetic peak torque and work at 60°/s on two occasions (\(n=25\)).