Abstract：
The objective was to assess and compare the tactical conduct of players aged U-8, U-10, and U-12 during full- and small-sided games, focusing on tactical modeling and interaction dynamics. Each age group comprised three teams (n = 180; 60 per category; 20 per team), engaging in a tournament where teams faced each other once in both formats - 18 matches; 3 per category in each format. Full-sided games (GK + 10 vs.10 + GK; 100 × 68 m) and small-sided games (U-8: GK + 4 vs. 4 + GK (36 × 20 m); U-10: GK + 7 vs. 7 + GK (52.5 × 34 m); U-12: GK + 10 vs. 10 + GK (68 × 45 m). Standard playing times (3 periods of 12 minutes (U-8s); 3 periods of 15 minutes (U-10s); and 3 periods of 20 minutes (U-12s), with a 5-minute break. Variables were examined using descriptive analysis (mean, standard deviation, and confidence interval), with paired t-tests and Wilcoxon tests employed for inter-format comparisons. Despite players benefiting from more time and space in full-sided games (increased ball receptions and overall ball involvement), results from small-sided games indicate three key advantages: 1) More goals (U-8s: z = -3.44, p = .050) and shots on target (U-8: z = -3.25, p = .001; U-10: z = -2.72, p = .007); 2) Game space management-ball circulation in larger amplitude (U-10: t = -4.20, p = .001; U-12: t = -4.35, p < .001); and with more transitions (U-10: t = -3.60, p = .002; U-12: t = -4.16, p = .001) and 3) Fast decision-making-larger ball velocity circulation (U-08: t = -3.54, p = .003; U-10: t = -5.13, p < .001; U-12: t = -5.80, p < .001).
摘要：
目的是评估和比较U-8，U-10和U-12岁球员在全面和小面比赛中的战术行为，专注于战术建模和相互作用动力学。每个年龄组由三支队伍组成(n=180；每个类别60支；每个队伍20支)，参加锦标赛，各队以两种格式面对对方一次-18场比赛；每种格式的每个类别3场。全场游戏（GK+10vs.10+GK；100×68m）和小盘游戏（U-8：GK+4vs.4+GK(36×20米);U-10:GK+7vs.7+GK(52.5×34m);U-12:GK+10vs.10+GK(68×45m)。标准播放时间（3个12分钟（U-8s）；3个15分钟（U-10s）；3个20分钟（U-12s），休息5分钟.使用描述性分析检查变量(平均值，标准偏差，和置信区间)，采用配对t检验和Wilcoxon检验进行格式间比较。尽管球员在全场比赛中受益于更多的时间和空间（增加了接球次数和整体球参与度），<小侧面游戏的结果表明了三个关键优势：1）更多的目标（U-8s：z=-3.44，p=.050）和目标射门（U-8：z=-3.25，p=.001；U-10：z=-2.72，p=.007）；2）游戏空间管理-较大的球循环（U-10：t=-4.00t-20，p=.001=
