# Effects of Specific Training Using a Rowing Ergometer on Sport Performance in Adolescents
## 3 Results
\begin{table}
\begin{tabular}{c c c c} \hline \hline  & \multicolumn{2}{c}{**Control Group**} & \multicolumn{2}{c}{**Experimental Group**} \\ \hline  & **10–11 Years** & **12–13 Years** & **10–11 Years** & **12–13 Years** \\  & **(Mean \(\pm\) SEM)** & **(Mean \(\pm\) SEM)** & **(Mean \(\pm\) SEM)** & **(Mean \(\pm\) SEM)** \\ \hline Pre-test (W) & 112.05 \(\pm\) 12.13 & 156.38 \(\pm\) 10.37 & 134.28 \(\pm\) 11.22 & 171.97 \(\pm\) 9.74 \\ Intermediate-test (W) & 114.45 \(\pm\) 12.30 & 159.82 \(\pm\) 9.94 & 144.23 \(\pm\) 11.66 & 202.91 \(\pm\) 13.31 \\ Post-test (W) & 116.61 \(\pm\) 12.74 & 163.58 \(\pm\) 9.97 & 150.10 \(\pm\) 11.67 & 211.32 \(\pm\) 13.35 \\ \hline \end{tabular} [F\({}_{(9,208)}\) = 0.54; two-way ANOVA and Holm-Sidak test]. W = watts; SEM (Standard Error of the Mean).  
\end{table} 
Table 4: Intrasubject analysis of muscle strength by group and category. \begin{table}
\begin{tabular}{c c c c} \hline \hline  & \multicolumn{2}{c}{**Control Group**} & \multicolumn{2}{c}{**Experimental Group**} \\ \hline  & **Male** & **Female** & **Male** & **Female** \\  & **(Mean \(\pm\) SEM)** & **(Mean \(\pm\) SEM)** & **(Mean \(\pm\) SEM)** & **(Mean \(\pm\) SEM)** \\ \hline Pre-test (W) & 159.18 \(\pm\) 9.85 & 100.16 \(\pm\) 9.55 & 173.97 \(\pm\) 9.38 & 134.5 \(\pm\) 11.46 \\ Intermediate-test (W) & 160.49 \(\pm\) 10.08 & 105.27 \(\pm\) 10.31 & 201.68 \(\pm\) 13.72 & 150.35 \(\pm\) 13.00 \\ Post-test (W) & 163.04 \(\pm\) 10.51 & 108.81 \(\pm\) 10.99 & 208.04 \(\pm\) 13.99 & 159.10 \(\pm\) 13.55 \\ \hline \end{tabular} [F\({}_{(9,208)}\) = 0.39; two-way ANOVA and Holm-Sidak test]. W = watts; SEM (Standard Error of the Mean).  
\end{table} 
Table 5: Intra-subject analysis of muscle strength by group and sex. Figure 2: Evolution of the averages obtained by group and sex. CG = control group; EG = experimental group; W = watts. [F\({}_{(21,192)}\) = 0.45; two-way ANOVA and Holm–Sidak test; \({}^{\star}\), \(p\) < 0.05]. Finally, once eight weeks of the intervention program were completed, both groups of rowers returned to identical training sessions: four sessions/week (2 h duration: 1 h of general muscular strength exercises, and 1 h of rowing). One year after the beginning of the program, a test on the rowing machine was again performed to collect data on the subjects' performance (Figure 3). Table 6 shows that the effects of specific strength training in adolescents continued to provide statistically significant differences one year later and had a positive correlation with respect to the performance of the rowing test on the rowing machine (Table 6, Figure 4). Table 7 and Figure 4 show the evolution of the different groups according to sex one year after the training program. Statistically significant differences were found after one year of training in the experimental groups (male and female) with respect to their control groups ([F\({}_{(9,208)}\) = 0.39; two-way ANOVA and Holm-Sidak test]). \begin{table}
\begin{tabular}{c c c c c} \hline \hline  & \multicolumn{2}{c}{**Control Group**} & \multicolumn{2}{c}{**Experimental Group**} \\ \hline  & **10–11 Years** & **12–13 Years** & **10–11 Years** & **12–13 Years** \\  & **(Mean \(\pm\) SEM)** & **(Mean \(\pm\) SEM)** & **(Mean \(\pm\) SEM)** & **(Mean \(\pm\) SEM)** \\ \hline Post-test (W) & 116.61 \(\pm\) 12.74 & 163.58 \(\pm\) 9.97 & 150.10 \(\pm\) 11.67 & 211.32 \(\pm\) 13.35 \\ One year later (W) & 152.92 \(\pm\) 11.25 & 191.85 \(\pm\) 8.286 & 177.83 \(\pm\) 11.71 & 254.83 \(\pm\) 16.79 \\ ADifpost-test/one year later (W) & +36.32 & +28.26 & +27.73 & +43.52 \\ \hline \hline \end{tabular} \([\)F\({}_{(9,208)}\) = 0.54; two-way ANOVA and Holm-Sidak test\(]\). W = watts.  
\end{table} 
Table 6: Intrasubject analysis of muscle strength by group and category one year after the training program. Figure 3: Evolution of the averages obtained (W) according to the group (control vs. experimental) and category (10–11 years vs. 12–13 years); and results obtained one year after the training program.