Norwegian School of Sport Sciences, Defence Institute, Oslo, Norway.
J Sports Sci. 2013;31(13):1383-92. doi: 10.1080/02640414.2013.781667. Epub 2013 Jun 17.
The aims of this study were to explain how the Intermittent Endurance Running (INTER) test is executed, describe physiological responses during testing, and evaluate reliability and content validity in this new soccer specific test. The test consists of 20 m shuttle running, interspersed with straight sprints, agility sprints, walking and resting. Shuttle run speed is increased at each level until exhaustion. Thirteen male professional players participated in the present study. Exercise tolerance time, distance covered, mean blood lactate and mean heart rate were 25:51 ± 2:41 min, 2892 ± 324 m, 5.5 ± 1.2 mmol · L(-1) and 161 ± 11 beats · min(-1), respectively, during the INTER test. Sprint and agility performance decreased significantly at higher levels. Eight of the players performed a retest for reliability evaluations. Mean difference ± 95% limits of agreement, coefficient of variation (CV) and intraclass correlation coefficient (ICC) for exercise tolerance time between test and retest were -00:41 ± 02:25 min, 2.5% and 0.75, respectively. The CV for sprint and agility performance between test and retest was <1%. The INTER test mimics soccer games on distance/time ratio, frequency of sprints, heart rate and blood lactate values, and could be an alternative field test for evaluating essential physical performance aspects in soccer players.
本研究旨在解释间歇耐力跑（INTER）测试的执行方式，描述测试过程中的生理反应，并评估该新的足球专项测试的可靠性和内容效度。该测试由 20 米折返跑组成，穿插着直线冲刺、变向冲刺、步行和休息。每次提高折返跑速度，直到运动员力竭。13 名男性职业足球运动员参与了本研究。INTER 测试中，运动员的耐力时间、跑动距离、平均血乳酸和平均心率分别为 25:51±2:41min、2892±324m、5.5±1.2mmol·L(-1)和 161±11beats·min(-1)。在较高水平时，冲刺和变向能力显著下降。其中 8 名运动员进行了重测以评估可靠性。耐力时间的组内相关系数（ICC）、均数差值（MD）±95%可信区间（CI）和变异系数（CV）分别为 0.75、-00:41±02:25min 和 2.5%。冲刺和变向能力的 CV 均<1%。INTER 测试在距离/时间比、冲刺频率、心率和血乳酸值等方面模拟了足球比赛，可以作为评估足球运动员基本体能的一种替代场测。
