## 3 Results  
A total of 104 adolescents participated in the study (66 boys and 38 girls). A descriptive analysis revealed an average participant's age of 13.87 \(\pm\) 1.46 years, height of 1.65 \(\pm\) 0.1 m, an average weight of 62.52 \(\pm\) 14.92 kg, and an average BMI of 22.71 \(\pm\) 3.9 kg/m\({}^{2}\). The average LLMP was 2626.11 \(\pm\) 734.78 Watts, VO\({}_{2}\)max was 39.66 \(\pm\) 3.85 mL/kg/min, and FPPA was 163.4 \(\pm\) 7.7\({}^{\circ}\). Descriptive statistics are presented in Table 1. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline  & \multicolumn{2}{c}{**Total N-104**} & \multicolumn{2}{c}{**Boys N = 66**} & \multicolumn{2}{c}{**Girls N = 38**} \\ \hline  & **Mean** & **SD** & **Mean** & **SD** & **Mean** & **SD** \\ \hline Age [years] & 13.87 & 1.58 & 13.71 & 1.50 & 14.13 & 1.35 \\ \hline Height [m] & 1.65 & 0.1 & 1.66 & 0.11 & 1.63 & 0.06 \\ \hline Weight [kg] & 62.56 & 14.92 & 63.9 & 16.7 & 60.1 & 10.8 \\ \hline BMI [kg\(\cdot\)m\({}^{-2}\)] & 22.71 & 3.98 & 22.9 & 4.36 & 22.32 & 3.23 \\ \hline LLMP [W] & 2626.11 & 734.78 & 2742.13 & 831.1 & 2424.61 & 473.09 \\ \hline VO\({}_{2}\)max [mL/kg/min] & 39.66 & 3.85 & 41.03 & 3.79 & 37.26 & 2.62 \\ \hline FPPA [\({}^{\circ}\)] & 163.4 & 7.7 & 163.03 & 7.79 & 164.03 & 7.62 \\ \hline \hline \end{tabular} SD = standard deviation, BMI = Body Mass Index, LLMP = lower limb muscle power, FPPA = frontal plane projection angle.  
\end{table} 
Table 1: Descriptive statistics. The normality tests Kolmogorov-Smirnov and Shapiro-Wilk revealed that the variables height, power, and VO\({}_{2}\)max did not significantly deviate from a normal distribution (\(p>0.05\)), whereas age, weight, BMI, and FPPA significantly deviated from normality (\(p<0.05\)) (Table 2). To examine potential differences between boys and girls, variables that followed a normal distribution (height, power, and FPPA) were analyzed using independent samples \(t\)-tests, while non-normally distributed variables (age, weight, and VO\({}_{2}\)max) were analyzed using Mann-Whitney U tests (Table 3). The analysis revealed statistically significant differences between the two genders in power (t (\(101.99\)) = 2.483, \(p\) = 0.015) and VO\({}_{2}\)max (U = 539.50, \(p<0.001\)), with boys demonstrating higher values in both variables, indicating that gender may influence LLMP and aerobic capacity. No significant differences were observed in age, height, weight, BMI, or FPPA (all \(p>0.05\)), suggesting that these characteristics are relatively similar between genders. Pearson and Spearman correlations were performed to assess relationships between the independent variables VO\({}_{2}\)max and power and the dependent variable FPPA (Table 4). [PERSON]'s correlation coefficient showed a strong positive correlation between VO\({}_{2}\)max and power (r = 0.85, \(p<0.001\)), VO\({}_{2}\)max and FPPA (r = 0.78, \(p<0.001\)), and power and FPPA (r = 0.82, \(p<0.001\)). \begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \multicolumn{2}{c}{**Kolmogorov–Smirnov**} & \multicolumn{2}{c}{**Shapiro–Wilk**} \\ \hline  & **Statistic** & **df** & **Sig.** & **Statistic** & **df** & **Sig.** \\ \hline Age & 0.194 & 104 & \textless{}0.001 & 0.906 & 104 & \textless{}0.001 \\ \hline Height & 0.080 & 104 & 0.099 & 0.989 & 104 & 0.549 \\ \hline Weight & 0.090 & 104 & 0.036 & 0.971 & 104 & 0.022 \\ \hline BMI & 0.066 & 104 & 0.200 * & 0.971 & 104 & 0.021 \\ \hline VO\({}_{2}\)max & 0.088 & 104 & 0.047 & 0.977 & 104 & 0.067 \\ \hline Power & 0.072 & 104 & 0.200 * & 0.978 & 104 & 0.086 \\ \hline FPPA & 0.078 & 104 & 0.133 & 0.962 & 104 & 0.004 \\ \hline \hline \end{tabular}  
* This is a lower bound of the true significance.  
\end{table} 
Table 2: Normality tests.