Baptista, J, Travassos, B, Gonçalves, B, Mourão, P, Viana, JL, and Sampaio, J. Exploring the effects of playing formations on tactical behavior and external workload during football small-sided games. J Strength Cond Res 34(7): 2024-2030, 2020-This study aimed to identify the effects of playing formations on tactical behavior and external workload during football small-sided games. Twenty-three semiprofessional footballers integrated 3 different playing formations in a 7-a-side small-sided game, according to their specific player positions: team 4:3:0 (4 defenders and 3 midfielders); team 4:1:2 (4 defenders, 1 midfielder, and 2 forwards); and team 0:4:3 (4 midfielders and 3 forwards). Based on players' movement trajectories, the following individual and collective tactical variables were calculated: total distance covered and distance covered while walking, jogging, running, and sprinting, distance from each player to both own-team centroid and opponent-team centroid, individual area, team length, team width, and surface area. Approximate entropy was computed to identify the regularity of each variable. The team 4:3:0 promoted players' space exploration with moderate physical efforts. The team 4:1:2 promoted compactness and regularity of the team with increase in the physical efforts. The team 0:4:3 promoted team balance and adaptability on space coverage with increase in physical efforts. Concluding, different playing formations support different game dynamics, and variations on external load were directly linked with the variations on tactical behavior. The analysis of tactical behavior through quantification of variability of patterns of play and quantification of distance covered at different velocities were the most useful information for the analysis of the effects of practice task manipulations. Therefore, in a practical sense, strength and conditioning coaches should plan and monitor these tasks in interaction with the head coaches.

中文翻译：

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探索比赛形式对足球小比赛中战术行为和外部工作量的影响。

Baptista，J，Travasasso，B，Gonçalves，B，Mourão，P，Viana，JL和Sampaio，J。探讨小型足球比赛中比赛形式对战术行为和外部工作量的影响。J Strength Cond Res 34（7）：2024-2030，2020年-这项研究旨在确定足球小型比赛中打球形式对战术行为和外部工作量的影响。23名半职业足球运动员根据他们的特定球员位置，在7人制小边比赛中整合了3种不同的比赛形式：球队4：3：0（4名防守者和3名中场球员）；团队4：1：2（4名后卫，1名中场和2名前锋）；和球队0：4：3（4个中场和3个前锋）。根据玩家的运动轨迹，计算出以下个人和集体战术变量：步行，慢跑，奔跑和短跑时的总距离和所覆盖的距离，以及每个球员到本队质心和对手组质心的距离，个人面积，球队长度，球队宽度和表面积。计算近似熵以识别每个变量的规律性。团队4：3：0通过适度的体力来促进球员的太空探索。团队4：1：2通过增加身体努力来提高团队的紧凑性和规律性。团队0：4：3通过增加体力来促进团队平衡和空间覆盖的适应性。最后，不同的比赛形式支持不同的比赛动态，外部负荷的变化与战术行为的变化直接相关。通过量化比赛模式的变异性和量化不同速度下的距离来进行战术行为分析，对于分析实践任务操纵的效果是最有用的信息。因此，从实际意义上讲，力量和条件教练应与主教练互动，计划和监视这些任务。