## 3 Results
### Signal from M. Extensor Carpi Ulinaris  
For the m. extensor carpi ulinaris, sEMG signal features varied across signal variations in both gaits, as shown in Table 7. During both gaits, amplitude was lower than in the raw signal after bandpass filtering at 40-450 Hz, even lower after bandpass filtering at 7-200 Hz, and lowest after low-pass filtering at 10 Hz, as clearly shown in Figure 5. RMS was lower than in the raw signal after bandpass filtering at 40-450 Hz and lowest after low-pass filtering at 10 Hz and bandpass filtering at 7-200 Hz. MF was lower than in the raw signal after bandpass filtering at 40-450 Hz, even lower after bandpass filtering at 7-200 Hz, and lowest after low-pass filtering at 10 Hz. SNR was higher than in the raw signal after bandpass filtering at 40-450 Hz and lower than in the raw signal after low-pass filtering at 10 Hz and bandpass filtering at 7-200 Hz. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Gait** & **Signal Variation** & **Amplitude [mV]** & **RMS [mV]** & **MF [Hz]** & **SNR [dB]** \\ \hline Walk & Raw & 726.8 (548.8; 819.6) & 121.9 (107.4; 133.6) & 169.0 (155.8; 182.0) & 19.2 (180.20.2) & 19.2 (180.20.2) \\  & Low-pass 10 Hz & 168.2 (128.1; 188.6) & 90.6 (78.7; 97.0) & 5.5 (5.1; 6.0) & 18.0 (16.6; 19.1) & 18.0 (16.6; 19.1) \\  & Bandpass 40–450 Hz & 630.1 (523.4; 796.2) & 113.4 (98.3; 126.8) & 177.0 (161.0; 186.9) & 24.4 (23.1; 26.1) & 15 \\  & Bandpass 7–200 Hz & 473.5 (359.9; 553.7) & 87.4 (75.6; 94.6) & 101.3 (94.5; 114.5) & 18.0 (16.7; 19.1) & 18 (10.6; 19.1) \\ \cline{2-6}  & \(p\)-value & \(<\)0.0001 & \(<\)0.0001 & \(<\)0.0001 & \(<\)0.0001 \\ \hline Trot & Raw & 1317.0 (1089.0; 1672.0) & 248.1 (214.3; 304.6) & 160.6 (150.4; 180.2) & 14.5 (14.0; 15.5) & 15 \\  & Low-pass 10 Hz & 368.8 (280.0; 422.4) & 190.4 (165.1; 226.3) & 5.4 (5.0; 6.1) & 13.6 (12.8; 14.5) & 15 \\  & Bandpass 40–450 Hz & 1171.0 (923.3; 1491.0) & 218.4 (190.4; 273.7) & 176.9 (161.6; 191.8) & 15 & 20.3 (19.2; 21.2) & 15 \\  & Bandpass 7–200 Hz & 875.4 (702.2; 1055.0) & 189.0 (154.6; 241.0) & 95.7 (86.6; 106.9) & 13.1 (12.2; 13.9) & 15 \\ \cline{2-6}  & \(p\)-value & \(<\)0.0001 & \(<\)0.0001 & \(<\)0.0001 & \(<\)0.0001 \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Median and ranges (lower quartile; upper quartile) signal feature data (amplitude, root mean square (RMS), median frequency (MF), signal-to-noise ratio (SNR)) compared between signal variants (low-pass filtered with a 10 Hz cut-off frequency, bandpass filtered with a 40–450 Hz cut-off frequency, bandpass filtered with a 7–200 Hz cut-off frequency) for signals obtained from the m. extensor carpi ulnaris during walking and trotting. Figure 4: Selected representative sEMG signals obtained from the m. extensor digitorum lateralis during walking (**A–D**) and trotting (**E–H**). (**A,E**) Signal loss (%) and residual signal (%) data. (**B,F**) Segment of burst after a low-pass 10 Hz filtering (red line) on the background of the raw signal (black line). (**C,G**) Segment of burst after a bandpass 40–450 Hz filtering (blue line) on the background of the raw signal (black line). (**D,H**) Segment of burst after a bandpass 7–200 Hz filtering (green line) on the background of the raw signal (black line). For the m. extensor carpi ulnaris, mean signal loss, and mean residual signal varied across cut-off frequencies, as illustrated in Figure 5A,E. During both gaits, signal loss was highest after bandpass filtering at 7-200 Hz and low-pass filtering at 10 Hz, and lower after bandpass filtering at 40-450 Hz, as shown in Table 8.