## 3 Results
### Evaluation of Validity  
The validity of the TASHUN was evaluated using [PERSON]'s rank correlation, comparing the TASHUN scores of participants with their INPP scores. As shown in Table 2, there is a significant correlation between the TASHUN and INPP scores across all assessed reflexes, with a strong positive relationship. The results obtained using the TASHUN assessment tool were in accordance with the results of the scientifically approved INPP assessment tool. The AUC values from the ROC analysis presented in Table 3 are all above 0.926, therefore all six tests incorporated in the TASHUN provide excellent predictive strength for determining the above mentioned positive status. It can also be concluded by the table that the lower thresholds of the 95% confidence intervals were also high (>0.89), meaning the results are robust and reliable. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline  & **TLR Flexio** & **TLR Extension** & **ATNR Left** & **ATNR Right** & **STNR Flexio** & \
\begin{tabular}{c} **STNR** \\ **Extensio** \\ \end{tabular} &
\begin{tabular}{c} **Reflexes** \\ **Total Score** \\ \end{tabular} \\ \hline Mean & 4.94 & 9.09 & 9.7 & 8.67 & 6.52 & 8.11 & 47 \\ Median & 4 & 8 & 9 & 8 & 5.5 & 7 & 43 \\ Standard deviation & 4.14 & 5.41 & 6.39 & 6.16 & 5.22 & 5.74 & 25.4 \\ Minimum & 0 & 0 & 0 & 0 & 0 & 0 & 2 \\ Maximum & 20 & 25 & 31 & 33 & 23 & 28 & 140 \\ Skewness & 1.14 & 0.464 & 0.796 & 1.17 & 1.03 & 0.768 & 0.893 \\ Shapiro-Wilk \(p\) & \textless{}0.001 & \textless{}0.001 & \textless{}0.001 & \textless{}0.001 & \textless{}0.001 & \textless{}0.001 & \textless{}0.001 \\
25 th percentile & 2 & 5 & 5.25 & 4 & 3 & 3 & 29 \\
75 th percentile & 7 & 13 & 13 & 11 & 9 & 12 & 61.8 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Descriptive statistics of the retained reflexes. All six ROC curves show a steep rise (Figure 1), almost reaching the optimal (0; 1) point--in other words, the area under curve values are high. As the curve runs far from the diagonal line, the model is far from being random. The graphical visualization demonstrates the results of the ROC analysis well and based on these, one can conclude that the TASHUN tests have a high diagnostic value, and their validity is scientifically supported. The TASHUN scoring was performed by four experts (one physical education teacher, two trainers and one researcher). Twenty young schoolgirls were involved, and the testing process was recorded by a video camera. All four experts scored the same recordings. Any differences between the mean scores given by each expert were tested with RM ANOVA (TLR FLEXIO: \(p=0.114\); TLR EXTENSIO: \(p=0.883\); ATNR LEFT: \(p=0.260\); ATNR RIGHT: \(p=0.381\); STNR FLEXIO: \(p=0.803\); STNR EXTENSIO: \(p=0.499\)). Based on the results of the RM ANOVA, no significant difference could be detected between the scores given by different experts (\(p>0.05\) in all cases), which indicated that the assessments were performed in a consistent manner and were largely independent from the evaluator. The ICC and the corresponding 95% confidence intervals for the verification of reliability are shown in Table 4. In our study, STNR EXTENSIO has the highest ICC value (0.993). This is the most reliable assessment in the TASHUN test. The lowest ICC values (0.980) were seen for the TLR FLEXIO test. Although this is indeed the lowest value, it can be still considered excellent. The lower thresholds of confidence intervals are above 0.90. This shows that the tests are highly reliable. The intervals are narrow, meaning that the estimations are robust, without a high level of uncertainty regarding the reliability of the assessments. Overall, the Intraclass Correlation Coefficient (ICC) values and their 95% confidence intervals shown in the table demonstrate that a very high reliability between individual assessments.