# The Effect of Integrative Training Program on Youth Soccer Players' Power Indexes
## 3 Results  
The results showed that the two groups did not differ on any of the initial measurements. Training also did not affect body mass and body mass index in either group (Table 1). The CIs of all measurements are presented in Table 3.  
The results for SJ showed that there was a main effect of the repeating factor (F = 9.086, \(p\) = 0.006, \(\mathrm{n}^{2}\) = 0.252) and interaction (F = 13.649, \(p\) < 0.001, \(\mathrm{n}^{2}\) = 0.336). More specifically, the EG group improved its performance between the two measurements (F = 23.308, \(p\) < 0.001, \(\mathrm{n}^{2}\) = 0.463), while the CG performance remained unchanged (F = 1.224, \(p\) = 0.640, \(\mathrm{n}^{2}\) = 0.008). Also, the two groups differed significantly at the second measurement (F = 6.345, \(p\) = 0.038, \(\mathrm{n}^{2}\) = 0.218) (Figure 2A). The results were similar for CMJ where there was a main effect of the repeating factor (F = 10.659, \(p\) = 0.003, \(\mathrm{n}^{2}\) = 0.299) and interaction (F = 8.606, \(p\) = 0.007, \(\mathrm{n}^{2}\) = 0.256). The EG group improved its performance between the two measurements (F = 18.524, \(p\) < 0.001, \(\mathrm{n}^{2}\) = 0.426), while the CG performance remained unchanged (F = 1.107, \(p\) = 0.813, \(\mathrm{n}^{2}\) = 0.002). Also, the two groups differed significantly at the second measurement (F = 4.450, \(p\) = 0.042, \(\mathrm{n}^{2}\) = 0.198) (Figure 2B). Figure 1: Illinois agility test. \begin{table}
\begin{tabular}{c c c c c} \hline \hline  & \multicolumn{4}{c}{**Confidence Interval**} \\ \hline
**Variable** & **EG Pre** & **EG Post** & **CG Pre** & **CG Post** \\ \hline
30 m (s) & 4.54–5.92 & 4.35–5.90 & 4.50–5.22 & 4.52–5.35 \\
10 m (s) & 1.80–2.35 & 1.78–2.36 & 1.94–2.14 & 1.87–2.24 \\ SJ (cm) & 16.0–36.0 & 18.6–39.5 & 21.2–36.0 & 20.8–36.6 \\ CMJ (cm) & 17.2–45.0 & 20.4–43.5 & 21.7–40.0 & 22.7–41.4 \\ Illinois test (s) & 16.8–18.7 & 16.3–18.4 & 17.1–18.5 & 16.8–18.6 \\ \hline \hline \end{tabular}
\begin{tabular}{c} EG, exercise group; CG, control group; SJ, squat jump; CMJ, countermovement jump. \\ \end{tabular}
\end{table} 
Table 3: Confidence intervals of physical performance measurements. Regarding the performance in the 10 m, no changes were observed (main effect of repeated factor: F = 0.577, \(p\) = 0.457, \(\eta^{2}\) = 0.031 and interaction: F = 5.403, \(p\) = 0.132, \(\eta^{2}\) = 0.331). More specifically, no group showed any changes in its performance (EG: F = 2.448, \(p\) = 0.135, \(\eta^{2}\) = 0.120 and CG: F = 3.171, \(p\) = 0.092, \(\eta^{2}\) = 0.150), and no differences were observed between the groups in the post measurement (F = 0.231, \(p\) = 0.637, \(\eta^{2}\) = 0.013) (Figure 3A). Similar were the results for the performance in the 30 m where no changes were observed (main effect of repeated factor: F = 0.530, \(p\) = 0.480, \(\eta^{2}\) = 0.042 and interaction: F = 1.945, \(p\) = 0.188, \(\eta^{2}\) = 0.139). More specifically, no group showed any changes in its performance (EG: F = 0.311, \(p\) = 0.557, \(\eta^{2}\) = 0.025 and CG: F = 1.753, \(p\) = 0.210, \(\eta^{2}\) = 0.127), and no differences were observed between the groups in the post measurement (F = 0.044, \(p\) = 0.838, \(\eta^{2}\) = 0.004) (Figure 3B). From the results of the statistical analysis for the Illinois agility test, it was evident that there was a significant main effect of the repeated factor (F = 25.770, \(p\) < 0.001, \(\eta^{2}\) = 0.682). Performance improvement was observed in the EG group between the two measurements (EG: F = 14.346, \(p\) = 0.003, \(\eta^{2}\) = 0.545). In the CG group, no changes in their performance were observed (CG: F = 1.502, \(p\) = 0.085, \(\eta^{2}\) = 0.112). Additionally, there were no significant differences between the two groups (F = 1.633, \(p\) = 0.226, \(\eta^{2}\) = 0.120) (Figure 3C). Figure 2: Performance changes in (**A**) S] and (**B**) CMJ. * denotes a significant difference with Pre (\(p\) < 0.05). # denotes a significant difference between groups (\(p\) < 0.05).