Department of Sport and Exercise Sciences, Soccer Research Group, University of Sunderland, Sunderland, UK.
Eur J Appl Physiol. 2011 Jun;111(6):969-78. doi: 10.1007/s00421-010-1721-2. Epub 2010 Nov 17.
The aims of this study were to (1) determine the reproducibility of sub-maximal and maximal versions of the Yo-Yo intermittent endurance test level 2 (Yo-Yo IE2 test), (2) assess the relationship between the Yo-Yo IE2 test and match performance and (3) quantify the sensitivity of the Yo-Yo IE2 test to detect test-retest changes and discriminate between performance for different playing standards and positions in elite soccer. Elite (n = 148) and sub-elite male (n = 14) soccer players carried out the Yo-Yo IE2 test on several occasions over consecutive seasons. Test-retest coefficient of variation (CV) in Yo-Yo IE2 test performance and heart rate after 6 min were 3.9% (n = 37) and 1.4% (n = 32), respectively. Elite male senior and youth U19 players Yo-Yo IE2 performances were better (P < 0.01) than elite youth U16s and sub-elite players (2,603 ± 451 and 2,534 ± 549 vs. 1,855 ± 535 vs. 1,749 ± 382 m). The intra- and inter-season CV for Yo-Yo IE2 test performance were 4.2 and 5.6%, respectively. A correlation was observed (P < 0.05) between Yo-Yo IE2 test performance and the total (r = 0.74) and high-intensity (r = 0.58) running distance covered in a match. A correlation was also evident (P < 0.01) between Yo-Yo IE2 test heart rate after 6 min expressed in percentage of maximal heart rate and the peak values for high-intensity running performed by midfielders in 5-min (r = -0.71), 15-min (r = -0.75) and 45-min periods (r = -0.77). The present data demonstrate that the Yo-Yo IE2 test is reproducible and can be used to determine the capacity of elite soccer players to perform intense intermittent exercise. Furthermore, the Yo-Yo IE2 test was shown to be a sensitive tool that not only relates to match performance but can also differentiate between intermittent exercise performance of players in various standards, stages of the season and playing positions.
(1) 确定最大和次最大强度 Yo-Yo 间歇性耐力测试 2 级（Yo-YoIE2 测试）的可重复性；(2) 评估 Yo-YoIE2 测试与比赛表现之间的关系；(3) 量化 Yo-YoIE2 测试检测测试-再测试变化的敏感性，并区分精英足球中不同比赛标准和位置的表现。精英（n=148）和次精英（n=14）男性足球运动员在几个连续赛季中进行了几次 Yo-YoIE2 测试。Yo-YoIE2 测试表现和 6 分钟后心率的测试-再测试变异系数（CV）分别为 3.9%（n=37）和 1.4%（n=32）。精英男性高级和 U19 青年球员的 Yo-YoIE2 表现优于精英 U16 和次精英球员（2603±451 和 2534±549 比 1855±535 和 1749±382 m）（P<0.01）。Yo-YoIE2 测试表现的 Intra 和 Inter-season CV 分别为 4.2%和 5.6%。观察到 Yo-YoIE2 测试表现与比赛中总（r=0.74）和高强度（r=0.58）跑动距离之间存在相关性（P<0.05）。Yo-YoIE2 测试后 6 分钟的心率与中场球员在 5 分钟（r=-0.71）、15 分钟（r=-0.75）和 45 分钟（r=-0.77）期间高强度跑动的峰值之间也存在相关性。目前的数据表明，Yo-YoIE2 测试具有可重复性，可用于确定精英足球运动员进行高强度间歇性运动的能力。此外，Yo-YoIE2 测试是一种敏感的工具，不仅与比赛表现相关，还可以区分不同标准、赛季阶段和比赛位置球员的间歇性运动表现。
