# The Effect of Integrative Training Program on Youth Soccer Players' Power Indexes
## 1 Introduction  
Soccer is characterized as an interval sport, involving a mix of low-, medium-, and high-intensity activities that alternate throughout the game [1]. The performance of individual players and the overall team performance is significantly influenced by high-intensity actions such as sprints, jumps, and changes of direction [2]. The intermittent nature of the sport also occurs in youth soccer [3]. Previous research has reported that U12-U14 children perform 2-18 sprints every 120 s with an average duration of 2 s [4]. In another study it is reported that U17 soccer players run at a maximum speed (sprint) of 152 \(\pm\) 72 m [5]. Therefore, it is clear that the anaerobic mechanism of young soccer players is particularly important for their performance, and the foundations for its improvement should begin from adolescence. Anaerobic training plays a pivotal role in enhancing the performance of soccer players, contributing significantly to the demanding nature of the sport [6, 7]. As mentioned above, soccer involves a combination of aerobic and anaerobic activities, with players frequently engaging in short bursts of high-intensity sprints, accelerations, decelerations, and changes in direction during a match [6]. Anaerobic training focuses on improving the body's ability to produce energy in the absence of oxygen, crucial for executing explosive movements and maintaining peak performance during intense intervals. A previous study [8] underscores the importance of incorporating anaerobic training in soccer conditioning programs to enhance power, speed, and agility. Trainingmodalities like high-intensity interval training (HIIT), pyometrics, sprint drills, balance, and strength training have been shown to positively impact soccer-specific performance parameters [9; 10; 11; 12; 13; 14; 15; 16; 17]. Also, training with small-sided games has positive effects on the physical condition of football players [18]. Coaches at developmental ages devote a lot of time to improving the technical and tactical characteristics of their players, resulting in limited time for training the above necessary physical abilities. The development of integrative neuromuscular training (INT), representing a comprehensive approach to physical performance, prioritizes the improvement of coordination and the functionality of both the nervous system and muscles. This can save time for coaches. This training methodology combines various elements such as strength training, flexibility exercises, balance drills, and proprioceptive activities to improve overall movement patterns and functional capabilities [19; 20]. From the above, it is understood that this type of training can save time for trainers as it aims to improve multiple physical abilities simultaneously [21]. Also, another advantage of these programs is that they can be carried out on the soccer field with low-cost equipment. By integrating these diverse components, INT aims to enhance neuromuscular efficiency, reduce the risk of injuries, and optimize athletic performance. Research studies, such as those by [PERSON] et al. [19; 20], have demonstrated the effectiveness of integrative neuromuscular training in preventing injuries, particularly in the context of sports-related movements. As a result, integrative neuromuscular training has gained prominence in the fields of sports medicine, physical therapy, and physical training, offering a well-rounded approach to optimizing human movement and performance. The literature review suggests a scarcity of studies examining the impact of programs like integrative neuromuscular training (INT) on the performance of young soccer players [21; 22]. More specifically, [PERSON] et al. [21] conducted an INT program during the season for young U12 soccer players. The program lasted 8 weeks with three workouts per week, and the results showed that speed, strength, and jumping ability improved. In another study, [PERSON] et al.