## 3 Results
### Intersegmental Coordination
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Variables**} & \multirow{2}{*}{**Groups Compared**} & \multirow{2}{*}{**Mean Diff (SE)**} & \multirow{2}{*}{\(p\)**-Value**} & \multicolumn{3}{c}{**CI of Diffs**} \\ \cline{3-6}  & & & & **Lower Bound** & **Upper Bound** \\ \hline \multirow{3}{*}{**Head onset (s)**} & \(90^{\circ}\) vs. \(135^{\circ}\) & \(-0.029\) (\(0.012\)) & \(0.046\) & \(-0.057\) & \(0.001\) \\ \cline{2-6}  & \(90^{\circ}\) vs. \(180^{\circ}\) & \(-0.133\) (\(0.013\)) & \(<\)\(0.001\) * & \(-0.164\) & \(-0.102\) \\ \cline{2-6}  & \(135^{\circ}\) vs. \(180^{\circ}\) & \(-0.104\) (\(0.014\)) & \(<\)\(0.001\)* & \(-0.139\) & \(-0.069\) \\ \hline \multirow{3}{*}{**Thorax onset (s)**} & \(90^{\circ}\) vs. \(135^{\circ}\) & \(-0.029\) (\(0.012\)) & \(0.046\) & \(-0.058\) & \(<\)\(0.001\) \\ \cline{2-6}  & \(90^{\circ}\) vs. \(180^{\circ}\) & \(-0.127\) (\(0.013\)) & \(<\)\(0.001\) * & \(-0.158\) & \(-0.096\) \\ \cline{2-6}  & \(135^{\circ}\) vs. \(180^{\circ}\) & \(-0.098\) (\(0.013\)) & \(<\)\(0.001\) * & \(-0.131\) & \(-0.065\) \\ \hline \multirow{3}{*}{**Pelvis onset (s)**} & \(90^{\circ}\) vs. \(135^{\circ}\) & \(-0.037\) (\(0.022\)) & \(0.296\) & \(-0.091\) & \(0.017\) \\ \cline{2-6}  & \(90^{\circ}\) vs. \(180^{\circ}\) & \(-0.101\) (\(0.023\)) & \(<\)\(0.001\) * & \(-0.158\) & \(-0.045\) \\ \cline{2-6}  & \(135^{\circ}\) vs. \(180^{\circ}\) & \(-0.065\) (\(0.023\)) & \(0.020\) & \(-0.121\) & \(-0.008\) \\ \hline \multirow{3}{*}{**Leading foot onset (s)**} & \(90^{\circ}\) vs. \(135^{\circ}\) & \(-0.033\) (\(0.026\)) & \(0.612\) & \(-0.096\) & \(0.030\) \\ \cline{2-6}  & \(90^{\circ}\) vs. \(180^{\circ}\) & \(-0.096\) (\(0.026\)) & \(0.001\) & \(-0.160\) & \(-0.032\) \\ \cline{2-6}  & \(135^{\circ}\) vs. \(180^{\circ}\) & \(-0.063\) (\(0.027\)) & \(0.064\) & \(-0.129\) & \(0.003\) \\ \hline \multirow{3}{*}{**Peak head yaw velocity** (\({}^{\circ}\)s\({}^{-1}\))**} & \(90^{\circ}\) vs. \(135^{\circ}\) & \(-21.026\) (\(7.016\)) & \(0.013\) & \(-38.427\) & \(-3.625\) \\ \cline{2-6}  & \(90^{\circ}\) vs. \(180^{\circ}\) & \(-42.830\) (\(7.339\)) & \(<\)\(0.001\) & \(-61.046\) & \(-24.614\) \\ \cline{2-6}  & \(135^{\circ}\) vs. \(180^{\circ}\) & \(-21.804\) (\(9.544\)) & \(0.075\) & \(-45.170\) & \(1.562\) \\ \hline \multirow{3}{*}{**Peak head–pelvis angular separation (\({}^{\circ}\))**} & \(90^{\circ}\) vs. \(135^{\circ}\) & \(-6.043\) (\(2.190\)) & \(0.022\) & \(-11.409\) & \(-0.676\) \\ \cline{2-6}  & \(90^{\circ}\) vs. \(180^{\circ}\) & \(-10.405\) (\(2.331\)) & \(<\)\(0.001\) * & \(-16.124\) & \(-4.687\) \\ \cline{2-6}  & \(135^{\circ}\) vs. \(180^{\circ}\) & \(-4.363\) (\(2.549\)) & \(0.273\) & \(-10.604\) & \(1.878\) \\ \hline \multirow{3}{*}{**Total step (n)**} & \(90^{\circ}\) vs. \(135^{\circ}\) & \(-0.750\) (\(0.084\)) & \(<\)\(0.001\) * & \(-0.956\) & \(-0.544\) \\ \cline{2-6}  & \(90^{\circ}\) vs. \(180^{\circ}\) & \(-1.425\) (\(0.085\)) & \(<\)\(0.001\) * & \(-1.635\) & \(-1.215\) \\ \cline{2-6}  & \(135^{\circ}\) vs. \(180^{\circ}\) & \(-0.675\) (\(0.101\)) & \(<\)\(0.001\) * & \(-0.921\) & \(-0.429\) \\ \hline \multirow{3}{*}{**Step size (\({}^{\circ}\))**} & \(90^{\circ}\) vs. \(135^{\circ}\) & \(-12.697\) (\(3.629\)) & \(0.002\) * & \(-21.606\) & \(-3.789\) \\ \cline{2-6}  & \(90^{\circ}\) vs. \(180^{\circ}\) & \(-20.465\) (\(3.799\)) & \(<\)\(0.001\) * & \(-29.799\) & \(-11.130\) \\ \cline{2-6}  & \(135^{\circ}\) vs. \(180^{\circ}\) & \(-7.767\) (\(4.354\)) & \(0.235\) & \(-18.427\) & \(2.892\) \\ \hline \hline \end{tabular}  
* \({}^{*}\) Indicates a significant difference (\(p<0.05\)), Diff = Difference, and CI = Confidence Intervals.  
\end{table} 
Table 2: Post hoc comparisons for the main effect of groups and amplitudes in the Mixed Model Analysis of Variance where no interactions between groups and turning amplitudes were observed. Figure 3: The effects of turning amplitude on mean peak head-segments angular separation in both younger adults and older adult groups. ** Denotes main effects of group from Mixed Model Analysis of Variance.