Sport Performance Department, FC Barcelona Sports, Barcelona, Spain.
National Institute of Physical Education of Catalonia (INEFC), Barcelona, Spain.
PLoS One. 2019 Sep 3;14(9):e0221818. doi: 10.1371/journal.pone.0221818. eCollection 2019.
The aim of this study was to describe the physical demands during U18 elite basketball games according to the game quarter and to identify a smaller subset of variables and threshold scores that distinguish players' physical performance in each quarter.
Data was collected from ninety-four players who participated in the study (age: 17.4 ± 0.74 years; height: 199.0 ± 0.1 cm; body mass: 87.1 ± 13.1 kg) competing in the Euroleague Basketball Next Generation Tournament. Players' movements during the games were measured using a portable local positioning system (LPS) (WIMU PRO®, Realtrack Systems SL, Almería, Spain) and included relative distance (total distance / playing duration), relative distance in established speed zones, high-intensity running (18.1-24.0 km·h-1) and sprinting (> 24.1 km·h-1). player load, peak speed (km·h-1) and peak acceleration (m·s-2) number of total accelerations and total decelerations, high intensity accelerations (> 2 m·s-2) and decelerations (< -2 m·s-2).
There was an overall decrease in distance covered, player load, number of high intensity accelerations and decelerations between the first and last quarter of the games in all playing positions. A classification tree analysis showed that the first quarter had much influence of distance covered (above 69.0 meters), distance covered <6.0 km·h-1 and accelerations (> 2 m·s-2), whereas the fourth quarter performance had much influence of distance covered (below 69.0) and distance covered 12.1-18.0 km·h-1.
A significant reduction in physical demands occurs during basketball, especially between first and last quarter for players in all playing positions during basketball games of under 18 elite players.
本研究旨在描述 U18 精英篮球比赛中根据比赛季度的身体需求，并确定一个较小的变量子集和阈值分数，以区分每个季度球员的身体表现。
数据来自 94 名参加欧洲联赛篮球下一代锦标赛的球员（年龄：17.4 ± 0.74 岁；身高：199.0 ± 0.1 厘米；体重：87.1 ± 13.1 公斤）。比赛中球员的动作通过使用便携式定位系统（LPS）（WIMU PRO®，Realtrack Systems SL，阿尔梅里亚，西班牙）进行测量，包括相对距离（总距离/比赛时间）、相对距离在既定速度区、高强度跑动（18.1-24.0km·h-1）和冲刺（>24.1km·h-1）。球员负荷、峰值速度（km·h-1）和峰值加速度（m·s-2）总加速和总减速次数、高强度加速（>2m·s-2）和减速（<-2m·s-2）。
在所有比赛位置中，比赛的第一和最后一个季度，距离、球员负荷、高强度加速和减速次数总体上都有所减少。分类树分析表明，第一季度对距离的影响很大（超过 69.0 米），距离小于 6.0km·h-1 和加速度（>2m·s-2），而第四季度的表现对距离的影响很大（低于 69.0）和距离 12.1-18.0km·h-1。
在篮球比赛中，身体需求会显著减少，尤其是在所有比赛位置的球员中，尤其是在第一和最后一个季度。
