## 3 Results
No significant interaction between time and group was found in the middle trapezie having when considering the mean amplitude EMG\({}_{\text{RMS}}\) (\(F\) = 0.677; \(p\) = 0.452; \(\eta_{p}^{2}\) = 0.036), maximal amplitude EMG\({}_{\text{RMS}}\) (\(F\) = 0.586; \(p\) = 0.471; \(\eta_{p}^{2}\) = 0.032), and EMG\({}_{\text{MED}}\) (\(F\) = 0.596; \(p\) = 0.456;  
\begin{table}
\begin{tabular}{c c c c} \hline  & \(\leq\)**100 Shots/Session (n = 13)** & \(>\)**100 Shots/Session (n = 7)** & **Between-Group Analysis** \\ \hline Upper trapezie & & & & \\ Mean ampl. EMG\({}_{\text{RMS}}\) (\(\mu\)V) & & & & \\ Baseline & 144.7 \(\pm\) 80.9 b\({}^{\text{c}}\) & 115.7 \(\pm\) 82.6 & \(F\) = 0.574; \(p\) = 0.458; \(\eta_{p}^{2}\) = 0.031 \\ Post 50 shots & 179.2 \(\pm\) 123.3 a & 150.6 \(\pm\) 88.1 & \(F\) = 0.292; \(p\) = 0.595; \(\eta_{p}^{2}\) = 0.016 \\ Post 100 shots & 200.4 \(\pm\) 111.5 a & 150.5 \(\pm\) 119.3 & \(F\) = 0.869; \(p\) = 0.364; \(\eta_{p}^{2}\) = 0.046 \\ Max. ampl. EMG\({}_{\text{RMS}}\) (\(\mu\)V) & & & \\ Baseline & 351.9 \(\pm\) 228.8 c & 298.1 \(\pm\) 194.4 & \(F\) = 0.277; \(p\) = 0.605; \(\eta_{p}^{2}\) = 0.015 \\ Post 50 shots & 422.7 \(\pm\) 251.7 & 386.3 \(\pm\) 230.0 & \(F\) = 0.101; \(p\) = 0.755; \(\eta_{p}^{2}\) = 0.006 \\ Post 100 shots & 523.2 \(\pm\) 338.2 a & 473.5 \(\pm\) 257.8 & \(F\) = 0.114; \(p\) = 0.739; \(\eta_{p}^{2}\) = 0.006 \\ EMG\({}_{\text{MED}}\) (Hz) & & & \\ Baseline & 68.6 \(\pm\) 19.8 & 72.5 \(\pm\) 5.4 & \(F\) = 0.251; \(p\) = 0.622; \(\eta_{p}^{2}\) = 0.014 \\ Post 50 shots & 79.1 \(\pm\) 18.7 & 78.1 \(\pm\) 13.9 & \(F\) = 0.014; \(p\) = 0.905; \(\eta_{p}^{2}\) = 0.001 \\ Post 100 shots & 68.6 \(\pm\) 15.0 & 67.4 \(\pm\) 14.0 & \(F\) = 0.029; \(p\) = 0.868; \(\eta_{p}^{2}\) = 0.002 \\ Middle trapezie & & & \\ Mean ampl. EMG\({}_{\text{RMS}}\) (\(\mu\)V) & & & \\ Baseline & 227.0 \(\pm\) 116.8 & 129.7 \(\pm\) 55.5 & \(F\) = 4.257; \(p\) = 0.054; \(\eta_{p}^{2}\) = 0.191 \\ Post 50 shots & 213.1 \(\pm\) 117.7 & 163.2 \(\pm\) 73.8 & \(F\) = 1.024; \(p\) = 0.325; \(\eta_{p}^{2}\) = 0.054 \\ Post 100 shots & 225.1 \(\pm\) 106.1 & 168.7 \(\pm\) 97.6 & \(F\) = 1.352; \(p\) = 0.260; \(\eta_{p}^{2}\) = 0.070 \\ Max. ampl. EMG\({}_{\text{RMS}}\) (\(\mu\)V) & & & \\ Baseline & 429.7 \(\pm\) 273.4 & 287.7 \(\pm\) 121.2 & \(F\) = 1.676; \(p\) = 0.212; \(\eta_{p}^{2}\) = 0.085 \\ Post 50 shots & 443.5 \(\pm\) 260.5 & 368.0 \(\pm\) 170.3 & \(F\) = 0.473; \(p\) = 0.500; \(\eta_{p}^{2}\) = 0.026 \\ Post 100 shots & 733.9 \(\pm\) 708.6 & 407.9 \(\pm\) 253.9 & \(F\) = 1.357; \(p\) = 0.259; \(\eta_{p}^{2}\) = 0.070 \\ EMG\({}_{\text{MED}}\) (Hz) & & & \\ Baseline & 84.5 \(\pm\) 78.9 & 61.2 \(\pm\) 14.1 & \(F\) = 0.589; \(p\) = 0.453; \(\eta_{p}^{2}\) = 0.032 \\ Post 50 shots & 66.2 \(\pm\) 7.2 & 62.5 \(\pm\) 11.9 & \(F\) = 0.781; \(p\) = 0.388; \(\eta_{p}^{2}\) = 0.042 \\ Post 100 shots & 59.8 \(\pm\) 13.7 & 63.1 \(\pm\) 17.4 & \(F\) = 0.228; \(p\) = 0.639; \(\eta_{p}^{2}\) = 0.012 \\ Lower trapezie & & & \\ Mean ampl. EMG\({}_{\text{RMS}}\) (\(\mu\)V) & & & \\ Baseline & 209.9 \(\pm\) 114.6 & 137.0 \(\pm\) 58.3 & \(F\) = 2.447; \(p\) = 0.135; \(\eta_{p}^{2}\) = 0.120 \\ Post 50 shots & 220.4 \(\pm\) 142.8 & 152.2 \(\pm\) 78.2 & \(F\) = 1.355; \(p\) = 0.260; \(\eta_{p}^{2}\) = 0.070 \\ Post 100 shots & 154.0 \(\pm\) 71.5 & 114.7 \(\pm\) 39.0 & \(F\) = 1.799; \(p\) = 0.197; \(\eta_{p}^{2}\) = 0.091 \\ Max. ampl. EMG\({}_{\text{RMS}}\) (\(\mu\)V) & & & \\ Baseline & 417.1 \(\pm\) 187.6 c & 332.9 \(\pm\) 180.1 & \(F\) = 0.942; \(p\) = 0.345; \(\eta_{p}^{2}\) = 0.050 \\ Post 50 shots & 453.3 \(\pm\) 306.3 c & 363.7 \(\pm\) 131.5 & \(F\) = 0.534; \(p\) = 0.474; \(\eta_{p}^{2}\) = 0.029 \\ Post 100 shots & 268.2 \(\pm\) 94.6 a,b & 248.4 \(\pm\) 85.7 & \(F\) = 0.213; \(p\) = 0.650; \(\eta_{p}^{2}\) = 0.012 \\ EMG\({}_{\text{MED}}\) (Hz) & & & \\ Baseline & 53.1 \(\pm\) 6.4 & 51.8 \(\pm\) 8.9 & \(F\) = 0.128; \(p\) = 0.724; \(\eta_{p}^{2}\) = 0.007 \\ Post 50 shots & 54.7 \(\pm\) 9.3 & 52.0 \(\pm\) 9.1 & \(F\) = 0.413; \(p\) = 0.529; \(\eta\(\eta_{p}^{2}=0.032\)).