## 3 Results
### Perceived Stress Scale for Children (PSS-C)  
The subjects completed the PSS-C questionnaire alongside the ASWS mentioned in the previous section. Again, the homogeneity of the groups was confirmed at baseline (\(p>0.05\)). The experimental group significantly reduced their PSS-C scores compared to the placebo, starting at the first month of the trial (Table 3). In this case, a reduction in the score suggests an improvement in their perception of stress. The results were more significant the longer the subjects consumed the experimental product. The sex-based results indicated that there were no significant differences in the effects of the ingredient in perceived stress among the males and females. In both cases, significant differences versus placebo were detected after 2 months of intake and continued into the 3 rd month. Since the statistical analysis of the whole experimental population indicated significant differences versus placebo at the first month, this could mean that the lack of significance during the first month when analyzing based on sex may be due to the low number of subjects per subgroup. \begin{table}
\begin{tabular}{l l l l l} \hline
**Study Group** & **Baseline** & **Month 1** & **Month 2** & **Final** \\ \hline Placebo (total) & 3.2 \(\pm\) 0.1 & 3.4 \(\pm\) 0.1 & 3.4 \(\pm\) 0.1 & 3.5 \(\pm\) 0.1 \\ \hline Experimental (total) & 3.2 \(\pm\) 0.1 & 4.1 \(\pm\) 0.1 *** & 4.3 \(\pm\) 0.1 *** & 4.5 \(\pm\) 0.1 *** \\ \hline Placebo (males) & 3.3 \(\pm\) 0.1 & 3.5 \(\pm\) 0.3 & 3.6 \(\pm\) 0.2 & 3.4 \(\pm\) 0.3 \\ \hline Experimental (males) & 3.3 \(\pm\) 0.1 & 4.0 \(\pm\) 0.1 & 4.2 \(\pm\) 0.1 * & 4.4 \(\pm\) 0.1 ** \\ \hline Placebo (females) & 3.2 \(\pm\) 0.1 & 3.4 \(\pm\) 0.3 & 3.4 \(\pm\) 0.3 & 3.5 \(\pm\) 0.4 \\ \hline Experimental (females) & 3.1 \(\pm\) 0.1 & 4.2 \(\pm\) 0.2 *** & 4.3 \(\pm\) 0.2 *** & 4.6 \(\pm\) 0.2 *** \\ \hline \end{tabular} Data presented as mean value \(\pm\) standard error.  
\end{table} 
Table 2: Results of the ASWS (Adolescent Sleep Wake Scale) score in the placebo and experimental groups at different time points. * \(p<0.05\), ** \(p<0.01\), *** \(p<0.005\), and *** \(p<0.001\) vs. placebo. \begin{table}
\begin{tabular}{l l l l l} \hline
**Study Group** & **Baseline** & **Month 1** & **Month 2** & **Final** \\ \hline Placebo & 18.2 \(\pm\) 0.6 & 18.1 \(\pm\) 0.7 & 17.9 \(\pm\) 0.6 & 17.2 \(\pm\) 0.7 \\ \hline Experimental & 18.0 \(\pm\) 0.6 & 15.9 \(\pm\) 1.0 * & 14.9 \(\pm\) 0.8 ** & 12.9 \(\pm\) 0.8 *** \\ \hline Placebo (males) & 17.7 \(\pm\) 1.2 & 17.3 \(\pm\) 0.9 & 17.8 \(\pm\) 1.5 & 17.2 \(\pm\) 0.9 \\ \hline Experimental (males) & 16.8 \(\pm\) 0.6 & 14.3 \(\pm\) 1.2 & 14.0 \(\pm\) 1.0 * & 11.5 \(\pm\) 0.7 *** \\ \hline Placebo (females) & 18.5 \(\pm\) 0.7 & 18.4 \(\pm\) 0.8 & 17.9 \(\pm\) 0.6 & 17.2 \(\pm\) 0.9 \\ \hline Experimental (females) & 19.8 \(\pm\) 0.8 & 18.4 \(\pm\) 1.3 & 16.3 \(\pm\) 1.1 ** & 15.3 \(\pm\) 1.3 * \\ \hline \end{tabular} Data presented as mean value \(\pm\) standard error.  
\end{table} 
Table 3: Results of the PSS-C (Perceived Stress Scale for Children) score in the placebo and experimental groups at different time points. * \(p<0.05\), ** \(p<0.01\), and *** \(p<0.001\) vs. placebo. In this experiment, it can be concluded that the experimental product significantly improved the subject's perception of their stress levels, being statistically significant from the first month of intake. When analyzing the questions in the PSS-C independently, it was observed that the significant differences compared to the placebo and experimental groups were with the following questions: \"In the last week, how often did you feel rushed or hurried?\", \"In the last week, how often did you feel worried about being too busy\", \"In the last week, how often did you feel scared or nervous\", and \"In the last week, how often did you get enough sleep?\".