## 3 Results  
As seen in Table 2, no significant differences were found between the groups in any of the anthropometric variables prior to the intervention.  
Table 3 presents data regarding the workload and physiological responses during one training session, collected from five participants in each group. Significant differences were seen between groups in all variables (maximum heart rate, running speed at all distances, and RPE), except for average heart rate--where no significant differences were seen.  
When comparing between the pre- and post-intervention results, a significant improvement (\(p<0.05\)) was only seen in the horizontal jump test and in the sled-pushing group (Table 4); a near-significant improvement (\(p=0.057\)) was seen in the horizontal jump test in the sled-pulling group. No significant improvements were found for any other variables.  
In the 5 m sprint test, no significant changes were found in the two sled groups, yet a non-significant decrease was seen in the running speed in the non-sled group.  
Figure 1 provides a graphical representation of the percentage of improvement in each anaerobic performance measure, prior to and following the intervention and by group. No significant difference was found in the percentage improvement between the three groups in any of the performance measures. However, across all examined performance measures, improvements in the two sled groups were consistently higher (though not significant) than in the non-sled control group.  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Groups** & **Participants** & **Control** & **Pull** & **Push** & \(p\) \\ \hline
**Variable** & **(\(n\) = 25)** & **(\(n\) = 8)** & **(\(n\) = 9)** & **(\(n\) = 8)** & \\ \hline Age & 16.7 \(\pm\) 0.6 & 16.6 \(\pm\) 0.5 & 16.7 \(\pm\) 0.8 & 16.8 \(\pm\) 0.5 & 0.87 \\ (years \(\pm\) sd) & & & & & \\ \hline Weight & 73.6 \(\pm\) 5 & 73.3 \(\pm\) 5 & 74.3 \(\pm\) 6 & 73.1 \(\pm\) 5 & 0.88 \\ (kg \(\pm\) sd) & & & & & \\ \hline Height & 182.6 \(\pm\) 6 & 182.6 \(\pm\) 7 & 182.7 \(\pm\) 7 & 183.1 \(\pm\) 3 & 0.94 \\ (cm \(\pm\) sd) & & & & & \\ \hline BMI & 22\(\pm\) 0.9 & 22.1\(\pm\) 0.9 & 22.3 \(\pm\) 0.6 & 21.8 \(\pm\) 0.6 & 0.57 \\ (index \(\pm\) sd) & & & & & \\ \hline Experience & 9.2 \(\pm\) 2.1 & 8.5 \(\pm\) 1.9 & 9.8 \(\pm\) 2.02 & 9.8 \(\pm\) 2.4 & 0.32 \\ (years \(\pm\) sd) & & & & & \\ \hline \hline \end{tabular} When comparing the players’ performance by group prior to the intervention (Table 1), no significant differences were found in any of the variables. Additionally, the data distribution for all variables was normal, except for the speed component. Therefore, for the speed test, a Wilcoxon Signed-Rank Test was performed.  
\end{table}
Table 2: Anthropometric variables by group (M \(\pm\) SD).  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Variable** & **HR** & **Max HR** & **RPE** & **Time** & \\ \hline
**Group** & & **(1–10)** & **10 m** & **20 m** & **30 m** \\ \hline Control & 107 \(\pm\) 4.7 & 149 \(\pm\) 4.3 \({}^{\ddagger}\).4 & 4.5\(\pm\) 0.5 \({}^{\ddagger}\).4 & 1.76 \(\pm\) 0.07 \({}^{\ddagger}\).4 & 3.26 \(\pm\) 0.16 \({}^{\ddagger}\).4 & 4.71 \(\pm\) 0.14 \({}^{\ddagger}\).4 \\ \hline Pull & 115 \(\pm\) 0.5 & 152 \(\pm\) 3.9 \({}^{\ast}\).4 & 5.3 \(\pm\) 0.6 \({}^{\ast}\).4 & 2.65 \(\pm\) 0.27 \({}^{\ast}\).4 & 4.25 \(\pm\) 0.11 \({}^{\ast}\).4 & 6.16 \(\pm\) 0.42 \({}^{\ast}\).4 \\ \hline Push & 116 \(\pm\) 4 & 160 \(\pm\) 4.7 \({}^{\ast}\).4 & 6 \(\pm\) 0.2 \({}^{\ast}\).4 & 3.09 \(\pm\) 3.15 \({}^{\ast}\).4 & 5.60 \(\pm\) 0.11 \({}^{\ast}\).4 & 7.79 \(\pm\) 0.27 \({}^{\ast}\).4 \\ \hline \hline \end{tabular} \(p<\) 0.05. \({}^{\ast}\) Significant difference between the push and pull groups. \({}^{\dagger}\) Significant difference between the push and control groups. \({}^{\ddagger}\) Significant difference between the pull and control groups.  
\end{table}
Table 3: Physiological, mechanical, and subjective data by group (M \(\pm\) SD).