## 3 Results
### Interobserver Reliability

Table 1: Single site inter- and intraobserver intraclass correlation coefficient (ICC) values and results of repeated single observer analysis at both laboratories (between-laboratory intraobserver values) of an ICC greater than 0.75 were considered excellent and marked in bold. \begin{table}
\begin{tabular}{l c c c c} \hline \hline  & **Parameter** & \multicolumn{2}{c}{**Intraobserver**} & \multicolumn{2}{c}{**Interobserver**} & \multicolumn{2}{c}{**Between-Laboratory Intraobserver**} \\  & & \(\sigma^{\text{observer}}\) & \(\mathbf{r}\) & \(\sigma^{\text{speed}}\) & \(\mathbf{r}\) & \(\sigma^{\text{test(lab)}}\) & \(\mathbf{r}\) \\ \hline \multirow{9}{*}{**Laboratory**} & _Flexion ST_ & 1.2 & 1.0 & 1.3 & 1.0 & 1.6 & 1.4 \\  & _Extension ST_ & 0.8 & 1.0 & 0.9 & 1.0 & 1.6 & 1.7 \\  & _Flexion SW_ & 0.7 & 1.0 & 0.9 & 1.0 & 1.2 & 1.5 \\  & _Addiction ST_ & 1.0 & 1.0 & 1.2 & 1.0 & 1.5 & 1.6 \\  & _Abduction SW_ & 0.7 & 1.0 & 0.9 & 1.2 & 1.3 & 1.4 \\  & _Flexion ST_ & 2.1 & 1.0 & 2.4 & 1.0 & 2.3 & 1.2 \\  & _Extension ST_ & 1.3 & 1.0 & 1.9 & 1.3 & 1.7 & 1.4 \\  & _Flexion SW_ & 1.1 & 1.0 & 1.8 & 1.4 & 1.6 & 1.5 \\  & _Range of motion_ & 1.6 & 1.0 & 1.8 & 1.0 & 1.7 & 1.1 \\  & _First abduction SW_ & 0.8 & 1.0 & 2.4 & 3.2 & 4.2 & 5.1 \\  & _Addiction SW_ & 1.0 & 1.0 & 1.5 & 1.6 & 3.4 & 3.7 \\  & _Second abduction SW_ & 0.7 & 1.0 & 1.3 & 1.6 & 3.2 & 3.8 \\  & _Plantarflexion ST_ & 1.6 & 1.4 & 1.5 & 1.5 & 1.6 & 1.4 \\  & _Drosillexion ST_ & 1.7 & 1.3 & 1.5 & 1.3 & 1.4 & 1.1 \\  & _Plantarflexion SW_ & 2.5 & 1.1 & 3.8 & 1.7 & 3.6 & 1.5 \\  & _Drosillexion SW_ & 1.5 & 1.5 & 1.6 & 1.4 & 1.3 & 1.4 \\  & _Flexion ST_ & 1.4 & 1.0 & 1.9 & 1.2 & 1.3 & 1.2 \\  & _Extension ST_ & 0.8 & 1.0 & 0.9 & 1.2 & 1.2 & 1.2 \\  & _Flexion SW_ & 2.9 & 1.0 & 3.2 & 1.0 & 4.2 & 1.1 \\  & _Addiction ST_ & 3.8 & 1.0 & 4.4 & 1.0 & 5.4 & 1.0 \\  & _Addiction SW_ & 1.5 & 1.0 & 2.5 & 1.5 & 5.0 & 1.0 \\  & _Flexion ST_ & 0.8 & 1.0 & 1.1 & 1.1 & 1.0 & 1.2 \\  & _Extension ST_ & 1.4 & 1.0 & 1.7 & 1.1 & 1.4 & 1.1 \\  & _Flexion SW_ & 0.9 & 1.0 & 1.0 & 1.1 & 0.9 & 1.2 \\  & _First abduction SW_ & 2.7 & 1.0 & 3.0 & 1.0 & 2.1 & 1.0 \\  & _Addiction SW_ & 2.0 & 1.0 & 3.1 & 1.0 & 2.4 & 0.9 \\  & _Second abduction SW_ & 1.7 & 1.0 & 3.0 & 1.2 & 2.3 & 0.9 \\  & _Plantarflexion ST_ & 1.0 & 1.0 & 1.3 & 1.4 & 1.1 & 1.3 \\  & _Drosillexion ST_ & 1.0 & 1.0 & 1.2 & 1.2 & 1.0 \\  & _Drosillexion SW_ & 0.9 & 1.0 & 1.0 & 1.1 & 1.1 & 1.3 \\  & _Extension ST_ & 1.4 & 1.0 & 1.7 & 1.1 & 1.4 & 1.1 \\  & _Flexion SW_ & 0.9 & 1.0 & 1.0 & 1.1 & 0.9 & 1.2 \\  & _First abduction SW_ & 2.7 & 1.0 & 3.0 & 1.0 & 2.1 & 1.0 \\  & _Addiction SW_ & 2.0 & 1.0 & 3.1 & 1.0 & 2.4 & 0.9 \\  & _Second abduction SW_ & 1.7 & 1.0 & 3.0 & 1.2 & 2.3 & 0.9 \\  & _Plantarflexion ST_ & 1.0 & 1.3 & 1.4 & 1.1 & 1.1 & 1.3 \\  & _Drosillexion ST_ & 1.0 & 1.0 & 1.2 & 1.2 & 1.2 & 1.0 \\  & _Plantarflexion SW_ & 0.9 & 1.0 & 1.0 & 1.1 & 1.1 & 1.3 \\  & _Drosillexion SW_ & 4.2 & 1.0 & 4.4 & 1.1 & 4.8 & 1.1 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Calculated mean ICC values (ICC\({}_{\text{mean}}\) = mean of all parameters for hip, knee and ankle) and 95% confidence intervals (95% CI) for the ankle, knee and hip, as well as total mean ICC values (ICC\({}_{\text{total}}\) = ICC\({}_{\text{mean}}\) hip + ICC\({}_{\text{mean}}\) knee + ICC\({}_{\text{mean}}\) ankle). Values for ICC above 0.75 were considered excellent and marked in bold.