Zanetti Vinicius, Aoki Marcelo Saldanha, Bradley Paul, Carling Christopher, Marino Thomas Kisil, Moreira Alexandre
Department of Sport, School of Physical Education and Sport, University of Sao Paulo, Sao Paulo, Brazil.
Red Bull, Sao Paulo, Brazil.
J Hum Kinet. 2021 Oct 31;80:287-295. doi: 10.2478/hukin-2021-0096. eCollection 2021 Oct.
This study examined changes in match running performance (MRP) in Under-14 soccer players (13.5 ± 0.7 yrs) during a congested match schedule (CMS) (4 matches played within a 5-day period). It also examined the difference in salivary testosterone (sT) concentration, somatic maturation, jumping tests, and Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IR1) between the players selected to play (SLG; group who participated in all matches) and players non-selected to play (NSG). A significant difference was observed for the frequency of decelerations (DEC) across matches (match 4 vs. matches 1, 2 and 3; p = 0.05; partial ƞ = 0.20). No difference between matches was observed for total running distance (TRD), high-speed running distance (HSRD), and frequency of accelerations (ACC) (p > 0.05). A wide range for within-player coefficient of variation (CV) values was observed for all MRP variables (range: 10.5 = TRD to 30.6 = HSRD). No difference between SLG and NSG for any of the assessed variables was observed (p > 0.05). The findings suggest that DEC was the most pertinent variable for monitoring changes in MRP during the CMS. In addition, at an elite youth soccer level, the biological maturity and fitness might not influence selection to play.
本研究调查了14岁以下足球运动员（13.5±0.7岁）在密集赛程（CMS）（5天内进行4场比赛）期间比赛跑动表现（MRP）的变化。研究还考察了入选参赛球员（SLG；参加所有比赛的组别）和未入选参赛球员（NSG）之间唾液睾酮（sT）浓度、身体成熟度、跳跃测试以及Yo-Yo间歇恢复测试1级（Yo-Yo IR1）的差异。观察到各场比赛间减速（DEC）频率存在显著差异（第4场比赛与第1、2、3场比赛相比；p = 0.05；偏ƞ = 0.20）。总跑动距离（TRD）、高速跑动距离（HSRD）和加速频率（ACC）在各场比赛间未观察到差异（p > 0.05）。所有MRP变量的球员内变异系数（CV）值范围较宽（范围：TRD为10.5至HSRD为30.6）。在任何评估变量上均未观察到SLG和NSG之间存在差异（p > 0.05）。研究结果表明，DEC是监测CMS期间MRP变化的最相关变量。此外，在精英青年足球层面，生理成熟度和体能可能不会影响参赛选拔。
