## 3 Results
### Between-Session Reliability  
Table 2 reports the descriptive statistics for the H-station and ID between-session reliability data for quadriceps and hamstrings strength tests and H/Q ratio. The Quad-H and Ham-H tests showed excellent reliability (ICC: 0.91 for both tests) while the H/Q-H had a good reliability (ICC: 0.89). The relative reliability for the Quad-I- and Ham-I tests was good (ICC of 0.80 to 0.89) while it was moderate for the H/Q-I (ICC: 0.65). For the H-station recordings, SEM and CV between sessions were 22.5 Nm and 8.8% for Quad-H, 10.4 Nm and 7.2% for Ham-H, and 0.05 and 9.3% for H/Q-H. For the ID recordings, SEM and CV between sessions were 18.6 Nm and 6.5 for Quad-I, 17.0 Nm and 11.7% for Ham-I, and 0.06 and 12.4% for H/Q-I. Figure 3 displays the Bland-Altman plots with LOA, investigating absolute reliability of the H-station and ID. For the Quad-H test (plot A), Bland-Altman displayed a mean difference of 14.5 Nm (\(p=0.063\)) with LOA% of 24.4%. For the Ham-H test (plot B), a significant mean difference of 11.4 Nm (\(p=0.049\)) with LOA% of 20.0% was found. For H/Q-H (plot C), a mean difference of 0.01 (\(p=0.768\)) with LOA% of 22.6% was found. A mean difference of 10.2 Nm (\(p=0.108\)) and 5.4 Nm (\(p=0.344\)) and a LOA% of 17.9 and 32.4% was found for the Quad-I and Ham-I tests, respectively. For the H/Q-I, a mean difference of 0.04 (\(p=0.082\)) and LOA% of 29.4% was found. MDC was 62.5 Nm for Quad-H, 28.8 Nm for Ham-H, 0.15 for H/Q-H, 51.5 Nm for Quad-I, 47.1 Nm for Ham-I, and 0.17 for H/Q-I. \begin{table}
\begin{tabular}{c c} \hline
**Characteristics** & **Participants** \\ \hline Age (years) & 25.6 \(\pm\) 1.7 \\ Height (cm) & 182.7 \(\pm\) 7.6 \\ Body mass (kg) & 81.4 \(\pm\) 13.2 \\ BMI (kg/m\({}^{2}\)) & 24.3 \(\pm\) 3.2 \\ Muscle mass (kg) & 38.2 \(\pm\) 6.3 \\ BFP (\%) & 17.1 \(\pm\) 7.5 \\ Lower leg length (cm) & 50.6 \(\pm\) 3.1 \\ Knee angle (degrees) [1] & 70.8 \(\pm\) 3.4 \\ \hline \end{tabular} Abbreviation: BMI: body mass index. BFP: body fat percentage. 1 Knee angle measured for the quadriceps H-station test.  
\end{table} 
Table 1: Participants’ demographic data (N = 19). Values are mean \(\pm\) standard deviation. \begin{table}
\begin{tabular}{l c c c c c c c c c c c} \hline \hline  & \multicolumn{2}{c}{**Session 1**} & \multicolumn{2}{c}{**Session 2**} & \multicolumn{2}{c}{**Diff \(\pm\) SD**} & \multicolumn{2}{c}{**ICC (95\% CI)**} & \multicolumn{2}{c}{**95\% LOA**} & \multicolumn{2}{c}{**LOA (\%)**} & \multicolumn{2}{c}{**SEM**} & \multicolumn{2}{c}{**CV (\%)**} & \multicolumn{2}{c}{**MDC**} \\ \cline{2-11} \cline{2-11}  & **Mean** & **SD** & **Mean** & **SD** & & & & **(lb-ub)** & & & \\ \hline H-station recordings & & & & & & & & & & \\ Quad-H (Nm) & 249.5 & \(\pm\)81.3 & 263.9 & \(\pm\)76.1 & 14.5 \(\pm\) 31.9 & 0.91 (0.76 to 0.96) & (\(-\)76.9–48.0) & 24.3 & 22.5 & 8.8 & 62.5 \\ Ham-H (Nm) & 138.2 & \(\pm\)43.2 & 149.6 & \(\pm\)43.4 & 11.4 \({}^{*}\) \(\pm\) 14.7 & 0.91 (0.64 to 0.99) & (\(-\)40.2–17.4) & 20.0 & 10.4 & 7.2 & 28.8 \\ H/Q-H & 0.57 & \(\pm\)0.17 & 0.58 & \(\pm\)0.15 & 0.01 \(\pm\) 0.08 & 0.89 (0.73 to 0.96) & (\(-\)0.15–0.14) & 22.6 & 0.05 & 9.3 & 0.15 \\ \hline ID recordings & & & & & & & & & \\ Quad-I (Nm) & 281.9 & \(\pm\)54.2 & 292.1 & \(\pm\)49.3 & 10.2 \(\pm\) 26.3 & 0.86 (0.67 to 0.94) & (\(-\)61.7–41.3) & 17.9 & 18.6 & 6.5 & 51.5 \\ Ham-I (Nm) & 148.1 & \(\pm\)41.8 & 142.7 & \(\pm\)34.0 & 5.4 \(\pm\) 24.0 & 0.80 (0.56 to 0.92) & (\(-\)41.7–52.5) & 32.4 & 17.0 & 11.7 & 47.1 \\ H/Q-I & 0.53 & \(\pm\)0.12 & 0.49 & \(\pm\)0.09 & 0.04 \(\pm\) 0.09 & 0.65 (0.29 to 0.85) & (\(-\)0.14–0.21) & 29.4 & 0.06 & 12.4 & 0.17 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Descriptive statistics and relative and absolute reliability data for the H-station and the ID (N = 19). Figure 3: Bland–Altman plots displaying absolute reliability for (**A**) the quadriceps strength test (Quad-H) in the H-station. (**B**) The hamstring strength test (Ham-H) in the H-station. (**C**) The hamstring/quadriceps ratio (H/Q-H) for the H-station.