![]() ![]() At present, elite football players travel 9 to 14 km in total during a game with high-intensity running accounting for 5–15% of this distance. As the nature of the game has evolved over time, the physiological demands have also changed. The technical and tactical nature of football (soccer) has resulted in the nature of multifactorial physical characteristics for players. When changing from 4DP to 3DP tactical formations, WDs training programs should include more of high-intensity running, while MFs training programs should be more based on short intensity activities (accelerations and decelerations). Additionally, the results are useful for optimizing training programs for football players with different playing positions. The characteristics and differences shown in this study may provide useful information for coaching staff regarding changing in-season tactical formations. No multivariate differences were found for FW and WD players in terms of the RPs between 3DP and 4DP tactical formations. For CDs, total distance, and high-intensity running were higher in 3DP (Wilks λ = 0.66, p < 0.001). The number of accelerations and decelerations most significantly contributed to the differentiation of 3DP and 4DP among MFs (Wilks λ = 0.31, p < 0.001), with higher occurrences with 3DP. ![]() Analysis of variance and discriminant canonical analysis are used to identify differences between 3DP and 4DP tactical solutions in terms of the RPs for each playing position. RPs were measured by global positioning system and classified into four groups based on playing positions: central defenders (CD n = 47), wide defenders (WD n = 24), midfielders (MF n = 48), or forwards (FW n = 19). The participants here include professional football players (M ± SD, age 23.57 ± 2.84 years, body height 181.9 ± 5.17 cm, body mass 78.36 ± 4.18 kg) playing at the highest competitive level in Croatia. This study aims to quantify and analyze the differences in position-specific RPs in professional football, when games are played with three defensive players (3DP) and four defensive players (4DP). Running performances (RPs) are known to be important parameters of success in football (soccer), but there is a lack of studies where RPs are contextualized regarding applied tactical solutions. ![]()
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