## 3 Results  
Figure 1 shows the heart rate average of the participants in each of the tracks. It is observed how the intensity increases progressively in the first four tracks. A decrease in the average heart rate is observed during tracks 5 and 8, which correspond to \"recovery\" and \"conditioning\", respectively. The highest average heart rate was recorded on track 7, corresponding to \"max jump 2\". Finally, the lowest average heart rate values were recorded on the last track, where the cooldown was performed.  
\begin{table}
\begin{tabular}{c c c c} \hline
**Track** & **Name** & **Intensity** & **Duration** \\ \hline
1 & Warmup & Progressive & 05’13” \\
2 & Cardio jump 1 & Medium & 05’23” \\
3 & Cardio jump 2 & Medium & 05’27” \\
4 & Max jump 1 & High & 06’41” \\
5 & Recovery & Low & 04’15” \\
6 & Cardio jump 3 & Medium & 06’29” \\
7 & Max jump 2 & High & 08’52” \\
8 & Conditioning & Medium-Low & 04’52” \\
9 & Cooldown & Low & 03’05” \\ \hline \end{tabular}
\end{table}
Table 2: Structure of Body Jump® session.  
Table 3 shows the comparison between the pretests and the post-tests of both CG and BJ. Statistically significant increases were observed in the analyzed variables of physical condition in BJ. Thus, the VO\({}_{2\text{Max}}\) (\(p\) = 0.0001), the CMJ flight height (\(p\) = 0.023), the SJ flight height (\(p\) = 0.003) and the 1 RM value in the uat exercise (\(p\) = 0.009) improved statistically significantly in BJ. In CG, there were no statistically significant differences after the intervention period.  
The comparison of the parameters related to the body composition of both the CG and the BJ is shown in Table 4. A statistically significant reduction in the sum of skinkolds was observed (\(p\) = 0.003), as well as the percentage of fat mass (\(p\) = 0.002) in BJ. The folds in which It was observed a statistically significant reduction were subscapular (\(p\) = 0.005), tricipital (\(p\) = 0.016), suprailiac (\(p\) = 0.008), supraspanale (\(p\) = 0.028) and abdominal (\(p\) = 0.005). In addition, the circumference of the contracted arm increased statistically significantly (\(p\) = 0.05) in BJ. There were no statistically significant reductions in any of the parameters in CG, and even some values, such as the waist-hip index (\(p\) = 0.047) and the percentage of fat mass (\(p\) = 0.047), increased statistically significantly during the time of the study.  
Figure 1: Average heart rate of the participants during Body Jump\({}^{\text{\textregistered}}\) in each of the tracks.  
\begin{table}
\begin{tabular}{c c c c c c c} \hline  & \multicolumn{3}{c}{**BJ**} & \multicolumn{3}{c}{**CG**} \\ \hline  & PRE & POST & P & PRE & POST & P \\ \hline VO\({}_{2\text{Max}}\)1  & 36.74 \(\pm\) 2.3 & 39.16 \(\pm\) 1.6 & **0.001** & 37.43 \(\pm\)2.9 & 37.99 \(\pm\) 3.1 & 0.360 \\ CMJ  & 25.24 \(\pm\) 4.0 & 26.45 \(\pm\) 4.3 & **0.023** & 26.8 \(\pm\) 3.5 & 26.68 \(\pm\) 3.7 & 0.845 \\ SJ  & 22.94 \(\pm\) 4.2 & 24.83 \(\pm\) 4.0 & **0.003** & 25.21 \(\pm\) 3.5 & 24.83 \(\pm\) 4.0 & 0.953 \\
1 RM  & 71.36 \(\pm\) 12.4 & 78.52 \(\pm\) 17.02 & **0.009** & 82.3 \(\pm\) 13.43 & 81.2 \(\pm\) 14.6 & 0.575 \\ \hline \end{tabular}
\end{table}
Table 3: Pre- and post-test results of variables related to physical fitness.