LaTeX Forum

\listfiles
\documentclass{scrartcl}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage[latin1]{inputenc}
\usepackage[ngerman]{babel}
\usepackage{multirow}

\begin{document}
\begin{table}[h]
%\begin{center}
\centering
\begin{tabular}{|l|c|c|c|c|}
\hline
\multirow{2}{*}{Motion} & \multicolumn{4}{|c|}{phase angle lag $\varphi_i$ [rad]} \\ \cline{2-5}
& $i = 1 $ & $i = 2 $ & $i = 3 $ & $i = 4 $ \\ \hline \hline
Walking & $\pi$ & $-\pi/3$ & $\pi$ & $-\pi/3$ \\ \hline
Running (s = 1.6) & \multicolumn{4}{|c|}{}\\ \cline{1-1}
Jumping (s = 3.0) & \multicolumn{4}{|c|}{\multirow{-2}*{$ \varphi_i = i \pi \lbrace 1 + \frac{\sqrt{s^2-1}}{arccos(-1/s)} \rbrace $}} \\ \hline
\end{tabular}
%\end{center}
\caption{Table???}
\label{tab1}
\end{table} 

Test, siehe Tab.~\ref{tab1}.
\end{document}