## 2 Materials and Methods
### Statistical Analysis
\begin{table}
\begin{tabular}{c c c c c c c c} \hline
**CoD** (Angle) & **Speed** & **Mean** & **CI 95\%** & **Mean Bias** & **Effect Size** & **95\% LOA** & **CV (\%)** \\ \cline{2-7}
**45L** & \(13\) & \(42.7\pm 4.7\) & (38.1/53.5) & \(-2.6\pm 1.1\) * & \(-0.57\) & \(-1.01\), \(-0.13\) & \(11.0\) \\ \cline{2-7}  & \(18\) & \(45.3\pm 5.4\) & (37.3/54.9) & & & & \(11.9\) \\ \hline
**45R** & \(13\) & \(47.7\pm 4.8\) & (37.0/55.7) & & & & \(10.0\) \\ \cline{2-7}  & \(18\) & \(48.1\pm 8.4\) & (47.0/52.1) & & & & \(16.9\) \\ \hline
**90L** & \(13\) & \(91.1\pm 2.9\) & (84.8/96.6) & & & & \(3.1\) \\ \cline{2-7}  & \(18\) & \(90.7\pm 3.5\) & (85.3/97.5) & & & & \(3.8\) \\ \hline
**90R** & \(13\) & \(94.6\pm 3.9\) & (85.2/101.1) & \(-0.8\pm 0.8\) & \(0.45\) & \(0.08\)–\(0.81\) & \(4.1\) \\ \cline{2-7}  & \(18\) & \(95.5\pm 3.6\) & (85.9/101.1) & & & & \(3.7\) \\ \hline
**135L** & \(13\) & \(141.0\pm 4.4\) & (133.1/148.2) & & & & \(3.1\) \\ \cline{2-7}  & \(18\) & \(140.5\pm 3.5\) & (134.5/147.8) & & & & \(2.4\) \\ \hline
**135R** & \(13\) & \(143.6\pm 6.0\) & (142.2/146.6) & & & & \(4.1\) \\ \cline{2-7}  & \(18\) & \(142.8\pm 5.0\) & (135.7/153.2) & & & & \(3.5\) \\ \hline
**180L** & \(13\) & \(184.6\pm 5.2\) & (175.5/194.5) & & & & \(2.8\) \\ \cline{2-7}  & \(18\) & \(184.1\pm 4.8\) & (174.5/198.3) & & & & \(2.6\) \\ \hline
**180R** & \(13\) & \(182.7\pm 4.6\) & (175.2/191.5) & & & & \(2.5\) \\ \hline \end{tabular} Note: \({}^{*}\)\(p<0.05\)  
\end{table} 
Table 2: Validity, reproducibility, and precision of the algorithm to measure CoDs at different angulations at different speeds, compared to high-resolution video. Figure 6: Bland–[PERSON] calculation of the mean difference between the angle detected by the algorithm and the video recording at each angle. Mean % difference between the algorithm and the video (dashed line, blue zone), 95% confidence interval of the mean (blue zone), upper limit of agreement (LoA) of 95% (green zone) and lower limit of agreement (LoA) of 95% (red zone), mean line % difference (blue line), and confidence interval of the mean line % difference (shaded grey). \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**CoD** Angle} & \multirow{2}{*}{**Sensor**} & \multirow{2}{*}{**Algorithm Criterion (Mean \(\pm\) SD)**} & \multirow{2}{*}{**CI 95\%** (Lower/Upper)**} & \multirow{2}{*}{**Mean Bias (\({}^{\circ}\))**} & \multirow{2}{*}{**Effect Size (IC 95\%)**} & \multirow{2}{*}{**CV (\%)**} & \multirow{2}{*}{**Mean Bias vs. Video Criterion (\%)**} \\  & & **(Mean \(\pm\) SD)** & & & & \\ \hline \multirow{4}{*}{45L} & IMMU1 & \(43.1\pm 4.3\) & \(41.3/44.9\) & IMMU1 vs. IMMU2 = \(-0.79\) & IMMU1 vs. IMMU2 = \(-0.17\) (\(-0.71/0.37\)) & \multirow{2}{*}{9.9} & \(-4.4\) \\ \cline{2-6}  & IMMU2 & \(43.9\pm 5.2\) & \(41.9/46.0\) & IMMU1 vs. IMMU3 = \(-2.03\) & IMMU1 vs. IMMU3 = \(-0.44\) (\(-0.97/0.08\)) & \multirow{2}{*}{11.8} & \(-2.5\) \\ \cline{2-6}  & IMMU3 & \(45.2\pm 6.0\) & \(42.9/47.4\) & IMMU2 vs. IMMU3 = \(-1.24\) & IMMU2 vs. IMMU3 = \(-0.27\) (\(-0.79/0.24\)) & \multirow{2}{*}{13.2} & \multirow{2}{*}{0.44} \\ \hline \multirow{4}{*}{45R} & IMMU1 & \(47.8\pm 4.9\) & \(46.2/49.5\) & IMMU1 vs. IMMU2 = \(0.98\) & IMMU1 vs. IMMU3 = \(-0.26/0.7\) & \multirow{2}{*}{10.2} & \multirow{2}{*}{3.3} \\ \cline{2-6}  & IMMU2 & \(46.9\pm 4.5\) & \(45.1/48.6\) & IMMU1 vs. IMMU3 = \(-0.10\) & IMMU1 vs. IMMU3 = \(-0.02\) (\(-0.49/0.44\)) & \multirow{2}{*}{9.5} & \multirow{2}{*}{1.4} \\ \cline{2-6}  & IMMU3 & \(47.9\pm 5.0\) & \(46.2/49.7\) & IMMU2 vs. IMMU3 = \(-1.08\) & IMMU2 vs. IMMU3 = \(-0.23\) (\(-0.73/0.25\)) & \multirow{2}{*}{10.4} & \multirow{2}{*}{3.5} \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Reproducibility analysis of the three inertial sensors to measure angles during a CoD compared to high-resolution video. Figure 7: (a) Mean and SD of the pre-CoD speed at the different angulations during the test at speeds of 13 and 18 km/h. (b) Mean and SD of the post CoD speed at the different angulations during the test at speeds of 13 and 18 km/h.