## 4 Discussion
In the context of achieving the highest force values on the target, this could mean that the full utilization of the entire body, according to the proximal-distal model, leads to maximal force generation during the strike. Implementation of advanced body coordination exercises, even beyond boxing training but focused on whole-body movement, could lead to improving athletes' fist acceleration and overall strike dynamics. However, disruptions in this sequence, meaning situations where body segments are not in the correct positions, can result in lower force values on the target. For example, if the proximal segments do not generate sufficient force or are not well synchronized with the distal segments, the force transferred to the target may be weakened or inadequate. Effective utilization of the entire body, starting from the segments closest to the body's center, which generate force and energy, down to the more distant segments, could lead to the highest force values being achieved during the striking of the target. Therefore, while certain trends were observed in the analysis of acceleration patterns within the upper limb, caution should be exercised in interpreting these results. Further research, involving a larger number of participants, may be needed to better understand the complex relationships between segments of the upper limb and movement dynamics. Regression model analysis of recorded results reveals both statistically significant and insignificant predictors. Fist acceleration and body mass emerged as significant factors, with their positive impact on total ground reaction force (Total_GRF) confirmed by low \(p\)-values, respectively, \(p<0.001\) for both predictors. Higher values of fist acceleration were correlated with greater force exerted on the target, possibly due to higher fist velocity during the strike. Similarly, greater body mass was associated with higher striking force. However, there were variables that did not prove to be statistically significant in the model. Forearm acceleration and arm acceleration showed no significant impact on Total_GRF, suggesting their minimal role in force generation compared to other factors. Likewise, body height was not significant, indicating that height may not have a significant influence on striking force in the analyzed context. An interesting finding from the analysis is the significant impact of training tenure on Total_GRF, supported by low \(p\)-values (\(p=0.035\)). This implies that experience and training time significantly affect striking force. Individuals with longer training tenure may be more effective in generating force, potentially due to greater strength, acceleration-generating ability, and technique acquired during training. Regression analysis identified significant factors shaping Total_GRF in the context of boxing. Despite some limitations, such as the insignificance of certain variables, the model provides valuable insights into the determinants of striking force. Particularly noteworthy is the confirmation of the importance of experience and training tenure in generating striking force. The study had certain limitations that could have influenced the presented results. It involved only 13 participants. Although this number allows for observing certain patterns, it still does not provide a broad perspective on boxers as a whole. Expanding the research to include more participants could improve the reliability of the results. Additionally, the rigid target installed on the force plate is not a typical striking target in the context of the studied discipline. Boxers accustomed to striking heavy punching bags could expect different cushioning properties from the target. Striking a hard target with a bare fist, without gloves,may have caused participants to strike with caution involuntarily, not utilizing their full power potential. Another limitation was the small number of sensors--they were only placed on the fist, forearm, and arm of the participant.