# Characteristics of Changes in Contractile Properties of Muscle after Anaerobic Exercise
## 3 Results
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline  & & \multicolumn{3}{c}{**Before**} & \multicolumn{3}{c}{**After**} & \\ \hline
**Muscle** & **Parameter** & \(x\) & **SD** & \(x\) & **SD** & **d** & \(p\) & \(r\) \\ \hline GL & Tc (ms) & 19.22 & 2.35 & 21.20 & 8.53 & 1.98 & 0.3622 & 0.23 \\  & Ts (ms) & 199.61 & 24.80 & 157.35 & 47.96 & \(-42.26\) & * 0.0012 & 0.74 \\  & Tr (ms) & 38.58 & 14.83 & 47.94 & 26.18 & 9.36 & 0.3341 & 0.22 \\  & Dm (mm) & 4.00 & 1.40 & 4.05 & 1.39 & 0.05 & 0.2772 & 0.25 \\  & Td (ms) & 18.83 & 1.51 & 19.95 & 1.48 & 1.12 & * 0.0054 & 0.64 \\  & I (mA) & 71.97 & 12.39 & 66.35 & 11.66 & \(-5.62\) & 0.3144 & 0.23 \\ \hline GM & Tc (ms) & 18.48 & 3.02 & 18.69 & 2.46 & 0.21 & 0.9679 & 0.01 \\  & Ts (ms) & 182.55 & 47.59 & 138.08 & 64.85 & \(-44.47\) & * 0.0054 & 0.64 \\  & Tr (ms) & 34.67 & 16.10 & 39.36 & 26.23 & 4.69 & 0.7782 & 0.06 \\  & Dm (mm) & 3.34 & 1.81 & 3.28 & 1.56 & \(-0.05\) & 0.2772 & 0.25 \\  & Td (ms) & 18.35 & 1.85 & 19.29 & 1.64 & 0.94 & * 0.0229 & 0.52 \\  & I (mA) & 70.74 & 13.87 & 71.61 & 9.94 & 0.87 & 0.3271 & 0.23 \\ \hline GT & Tc (ms) & 35.08 & 6.47 & 33.88 & 5.52 & \(-1.21\) & 0.4553 & 0.17 \\  & Ts (ms) & 141.32 & 50.98 & 135.28 & 45.27 & \(-6.04\) & 0.4115 & 0.18 \\  & Tr (ms) & 78.91 & 33.92 & 87.69 & 36.79 & 8.79 & 0.3703 & 0.20 \\  & Dm (mm) & 10.13 & 3.89 & 9.64 & 4.04 & \(-0.49\) & 0.4553 & 0.17 \\  & Td (ms) & 28.03 & 3.17 & 27.58 & 2.91 & \(-0.45\) & 0.2322 & 0.27 \\  & I (mA) & 68.03 & 11.51 & 71.22 & 12.51 & 3.19 & 0.5461 & 0.14 \\ \hline RF & Tc (ms) & 25.82 & 4.97 & 25.84 & 4.90 & 0.02 & 0.6677 & 0.10 \\  & Ts (ms) & 67.06 & 33.60 & 83.37 & 47.29 & 16.31 & * 0.0276 & 0.49 \\  & Tr (ms) & 34.93 & 29.10 & 48.64 & 42.34 & 13.70 & * 0.0478 & 0.44 \\  & Dm (mm) & 7.38 & 2.30 & 6.82 & 1.77 & \(-0.56\) & 0.1560 & 0.32 \\  & Td (ms) & 22.01 & 1.66 & 22.80 & 1.46 & 0.79 & 0.0731 & 0.40 \\  & I (mA) & 68.80 & 9.94 & 73.83 & 14.06 & 5.03 & 0.1259 & 0.34 \\ \hline SO & Tc (ms) & 34.24 & 14.65 & 25.37 & 9.42 & \(-8.88\) & * 0.0051 & 0.63 \\  & Ts (ms) & 147.39 & 22.49 & 147.10 & 35.81 & \(-0.29\) & 0.3507 & 0.21 \\  & Tr (ms) & 35.20 & 12.25 & 38.09 & 18.60 & 2.89 & 0.6813 & 0.09 \\  & Dm (mm) & 2.85 & 1.21 & 2.50 & 0.97 & \(-0.35\) & 0.0620 & 0.42 \\  & Td (ms) & 21.61 & 1.86 & 21.74 & 2.94 & 0.13 & 0.4781 & 0.16 \\  & I (mA) & 75.33 & 13.63 & 77.07 & 11.90 & 1.74 & 0.3317 & 0.22 \\ \hline VL & Tc (ms) & 22.38 & 3.20 & 22.58 & 3.22 & 0.20 & 0.8228 & 0.05 \\  & Ts (ms) & 51.94 & 32.30 & 50.31 & 26.62 & \(-1.63\) & 0.6542 & 0.10 \\  & Tr (ms) & 27.24 & 28.31 & 26.13 & 23.83 & \(-1.11\) & 0.8519 & 0.04 \\  & Dm (mm) & 5.53 & 1.81 & 5.18 & 1.59 & \(-0.35\) & * 0.0365 & 0.47 \\  & Td (ms) & 21.03 & 2.20 & 21.77 & 1.64 & 0.75 & * 0.0239 & 0.51 \\  & I (mA) & 67.44 & 11.98 & 69.11 & 12.45 & 1.66 & 0.8519 & 0.04 \\ \hline \end{tabular}
\end{table} 
Table 3: Characteristics of the tensiomyography (TMG) parameters before and after anaerobic exercise (N = 20). The next step of the analysis was to analyze the correlation between Wingate test parameters and changes in TMG parameters, which is shown in Table 4. Statistically significant correlations were noted in five out of seven tested muscles. The gastrocnemius medialis muscle was characterized by the largest number of correlations, with 5 negative correlations at the moderate level and one at the strong level (Table 4). The correlation parameter with the highest effect size occurred for parameter d Tr compared with the anaerobic power (AP) of the Wingate test (\(-0.77\)), while the other relationships were at an average level. The parameters d Tc and d Tr of the gastrocnemius lateralis muscle correlated with Vmax (\(-0.63\), \(-0.53\)), AP (\(-0.55\), \(-0.77\)), and AC (\(-0.60\), \(-0.65\)). In turn, the relationship between the d Dm parameter was noted in connection with Vmax (\(-0.49\)) and tPPO (\(-0.58\)).