## 4 Discussion
However, different sprint effects were found according to the sex of the participants, but in no case did it evidence statistical improvement over time. This lack of improvement may be attributed to the immediate muscular fatigue resulting from the execution of the warm-up programs, which could diminish the muscle's capacity to execute a maximally demanding task, such as a 20 m sprint [25]. Similarly, [PERSON] et al. [26] observed that the accumulated fatigue during basketball practice decreased the performance of high-speed actions. Furthermore, evidence suggests that basketball-practice-induced fatigue influences jump and sprint performance differently, which is consistent with our findings [27; 28]. Considering the test used to evaluate sprint performance, the 20 m sprint was selected, in agreement with similar studies previously published. However, it remains unknown how the warm-up protocols may affect the performance of shorter sprint distances (e.g., 5 m, 10 m, etc. ), which may be less impacted by fatigue. According to [PERSON] et al. [17], basketball athletes might be more accustomed to managing this short-term fatigue. Another factor that could explain these results is the dynamic warm-up conducted prior to the intervention, which may have already influenced speed ability. According to [PERSON] et al. [7], a 10 min warm-up significantly enhanced performance in sprinting and jumping skills among non-athlete children. This suggests that dynamic warm-up likely exerts a direct influence on performance, potentially limiting further improvements in the abilities of the athletes during the intervention with both protocols. The age of the participants is a crucial factor to consider when interpreting the results obtained. The sample comprised athletes aged from 13 to 18 years, suggesting that some may not have reached complete physiological maturity. Research has shown that the effects of physical exercise on physical condition vary depending on maturity stage [29], which may explain why age was found to significantly influence some of the evaluated outcomes. Calculating biological age using the peak height velocity (PHV) could provide further insights into the impact of this variable. To summarize, the FIFA 11+ program was initially developed to address the specific demands of soccer, and consequently, its principles are primarily tailored to the requirements of this sport rather than other athletic disciplines. However, owing to its proven efficacy [6; 30; 31] and adaptability across various sports facility environments, and with different athlete skill levels, this program has garnered widespread acclaim within the sports community, prompting its implementation in other sporting realms beyond soccer. Precisely, diverse studies have corroborated its usefulness in other sports such as volleyball [32] or handball [33]. The significant improvement in sports performance after the FIFA 11+ program is linked to its intensity and the main objective of the program, which is to improve players' awareness of movement techniques and body alignments [34]. Furthermore, the research conducted by [PERSON] et al. [13] showed positive effects on agility among basketball athletes after the intervention. In contrast, [PERSON] et al. [15] found no additional effects on sprinting, agility, or vertical jump after 12 weeks of FIFA 11+. The findings of the present study may contribute to addressing the existing knowledge gap concerning whether a specific basketball warm-up routine may yield superior effects compared to a nonspecific basketball program. Considering Basket-Up as an innovative warm-up proposal, the initial focus was on analyzing its immediate effectiveness while controlling for other potential variables that could influence the results, such as the intensity of technical-tactical training, individual players' competition time, accumulated fatigue, or perceived pains [35].