PDF(Pubmed)
Abstract：
UNASSIGNED: The aim of this study was to analyze the effects of space and number of players manipulation on the external and internal load demands of youth futsal athletes.
UNASSIGNED: Forty-two male U17 players (age = 15.62 ± 0.58 years) from three futsal teams participated in the study. In this cross-sectional study that lasted 8-week, the player\'s sample practiced six futsal tasks (T1-T6) and a futsal game played under the official rules (T7). From T1-T6, two task constraints were manipulated: (i) the number of players and, (ii) the space of play. The WIMU PRO™ Ultra-Wideband (UWB) tracking system was used to measure the external and internal load during the futsal tasks. External load was quantified using kinematic and mechanical variables extracted from positional data and, the internal load was quantified using Heart rate (HR) and rating of perceived exertion (RPE). Repeated measures ANOVA was used for comparison purposes.
UNASSIGNED: In general, the results showed high external (total distance, distance 18.1-21, above 21 Km/h, and high intensity acceleration and deceleration, p < 0.001) and internal load (heart rate average and rating of perceived exertion, p < 0.001) in the tasks with low number of players and high area. In relation to the match, the tasks with small relative area per player (GK + 2 vs. 2 + GK and GK + 3 vs. 3 + GK in 20 × 20 m) promoted low external load.
UNASSIGNED: It was concluded that increasing the relative area by reducing the number of players involved in the tasks in the form of small-sided games (GK + 2 vs. 2 + GK and GK + 3 vs. 3 + GK), in relation to the futsal game (GK + 4 vs. 4 + GK), can be considered a pedagogical strategy to increase the external and internal load demands of young futsal players.
UNASSIGNED: Forty-two male U17 players (age = 15.62 ± 0.58 years) from three futsal teams participated in the study. In this cross-sectional study that lasted 8-week, the player\'s sample practiced six futsal tasks (T1-T6) and a futsal game played under the official rules (T7). From T1-T6, two task constraints were manipulated: (i) the number of players and, (ii) the space of play. The WIMU PRO™ Ultra-Wideband (UWB) tracking system was used to measure the external and internal load during the futsal tasks. External load was quantified using kinematic and mechanical variables extracted from positional data and, the internal load was quantified using Heart rate (HR) and rating of perceived exertion (RPE). Repeated measures ANOVA was used for comparison purposes.
UNASSIGNED: In general, the results showed high external (total distance, distance 18.1-21, above 21 Km/h, and high intensity acceleration and deceleration, p < 0.001) and internal load (heart rate average and rating of perceived exertion, p < 0.001) in the tasks with low number of players and high area. In relation to the match, the tasks with small relative area per player (GK + 2 vs. 2 + GK and GK + 3 vs. 3 + GK in 20 × 20 m) promoted low external load.
UNASSIGNED: It was concluded that increasing the relative area by reducing the number of players involved in the tasks in the form of small-sided games (GK + 2 vs. 2 + GK and GK + 3 vs. 3 + GK), in relation to the futsal game (GK + 4 vs. 4 + GK), can be considered a pedagogical strategy to increase the external and internal load demands of young futsal players.
摘要：
■这项研究的目的是分析空间和球员数量操纵对青年五人制足球运动员的外部和内部负荷需求的影响。
■来自三支五人制球队的42名U17男性球员（年龄=15.62±0.58岁）参加了这项研究。在这项为期8周的横断面研究中，玩家的样本练习了六个五人制足球任务（T1-T6）和根据官方规则（T7）进行的五人制足球游戏。从T1-T6开始，操纵了两个任务约束：(I)玩家数量和，（2）游戏的空间。WIMUPRO™超宽带（UWB）跟踪系统用于测量五人制足球任务期间的外部和内部负载。使用从位置数据中提取的运动学和机械变量量化外部载荷，使用心率(HR)和感知劳累(RPE)评分对内部负荷进行量化.重复测量ANOVA用于比较目的。
■一般来说，结果显示较高的外部(总距离，距离18.1-21,21Km/h以上,高强度加速和减速，p<0.001)和内部负荷(心率平均值和感知用力等级，p<0.001）在玩家数量少，区域高的任务中。关于比赛，每个玩家相对面积较小的任务(GK+2与2+GK和GK+3vs.20×20m中的3GK）促进了低外部负荷。
■得出的结论是，通过减少以小面游戏形式参与任务的玩家数量来增加相对面积（GK2vs.2+GK和GK+3vs.3+GK),关于五人制足球游戏（GK4vs.4+GK),可以被认为是一种教学策略，以增加年轻五人制足球运动员的外部和内部负荷需求。
■来自三支五人制球队的42名U17男性球员（年龄=15.62±0.58岁）参加了这项研究。在这项为期8周的横断面研究中，玩家的样本练习了六个五人制足球任务（T1-T6）和根据官方规则（T7）进行的五人制足球游戏。从T1-T6开始，操纵了两个任务约束：(I)玩家数量和，（2）游戏的空间。WIMUPRO™超宽带（UWB）跟踪系统用于测量五人制足球任务期间的外部和内部负载。使用从位置数据中提取的运动学和机械变量量化外部载荷，使用心率(HR)和感知劳累(RPE)评分对内部负荷进行量化.重复测量ANOVA用于比较目的。
■一般来说，结果显示较高的外部(总距离，距离18.1-21,21Km/h以上,高强度加速和减速，p<0.001)和内部负荷(心率平均值和感知用力等级，p<0.001）在玩家数量少，区域高的任务中。关于比赛，每个玩家相对面积较小的任务(GK+2与2+GK和GK+3vs.20×20m中的3GK）促进了低外部负荷。
■得出的结论是，通过减少以小面游戏形式参与任务的玩家数量来增加相对面积（GK2vs.2+GK和GK+3vs.3+GK),关于五人制足球游戏（GK4vs.4+GK),可以被认为是一种教学策略，以增加年轻五人制足球运动员的外部和内部负荷需求。
