אימונים Intermittent Endurance and Repeated Sprint Ability in Soccer Players.

[Mike Bikov]

J Strength Cond Res. 2010 Sep 15. [Epub ahead of print]
Intermittent Endurance and Repeated Sprint Ability in Soccer Players.

Chaouachi A, Manzi V, Wong DP, Chaalali A, Laurencelle L, Chamari K, Castagna C.

1Research Laboratory "Sports Performance Optimization" National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia; 2Department of Team-Sports, School of Sport and Exercise Sciences, Faculty of Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy; 3Department of Health and Physical Education, The Hong Kong Institute of Education, Hong Kong; and 4Department of Physical Activity Sciences, University of Quebec, Trois-Rivières, Quebec, Canada.
Abstract

Chaouachi, A, Manzi, V, Wong, DP, Chaalali, A, Laurencelle, L, Chamari, K, and Castagna, C. Intermittent endurance and repeated sprint ability in soccer players. J Strength Cond Res 24(x): 000-000, 2010-The ability to perform high-intensity intermittent exercise (i.e., Yo-Yo Intermittent Recovery Test [Yo-Yo IR1]) and to repeat sprints with relatively short recovery times (i.e., 20- to 30-seconds, relatively short time interval [repeated sprint ability (RSA)]) has been shown to be relevant fitness variables in soccer. However, though they potentially share common features, it is not known whether these 2 abilities are associated. The aim of this study was to examine the relationships between Yo-Yo IR1 and RSA performances in elite soccer players. Twenty-three soccer players (age 19 ± 1 years, height 181 ± 5.7 cm, body mass 73.2 ± 4.1 kg, %body fat 11 ± 2.4) performed the Yo-Yo IR1 and a test for RSA (7 × 30 m with 25-second recovery). Results were 2,289 ± 409 m, 31.21 ± 1.13 seconds, and 4 ± 2.1% for Yo-Yo IR1, total sprint time, and sprint decrement, respectively. Yo-Yo IR1 showed a significant and moderate relationship with sprint decrement (r = -0.44, p = 0.04). Splitting the sample into Best and Worst Yo-Yo IR1 performers according to median score (2,320 m), the Best group showed lower RSA total time (30.69 ± 0.99 vs. 31.79 ± 1.06, p < 0.05) and speed decrement (2.90 ± 0.86 vs. 5.09 ± 2.42, p < 0.01) compared to the Worst group. Sprint-time deterioration over 30 m occurred earlier (from the second sprint on) in the Yo-YoWorst compared with in the Yo-YoBest group (from the fourth sprint on, p < 0.001). Intermittent high-intensity endurance is poorly associated with RSA performance (r = 0.19). Consequently, coaches and strength and conditioning professionals should consider both Yo-Yo IR1 and RSA in their testing batteries. A Yo-Yo IR1 performance ≥2,320 m could be considered as a reasonable indicator of physical fitness in elite soccer. Relatively short time interval test protocols similar to the present study should consist of at least 5 sprint bouts.

PMID: 20847706 [PubMed - as supplied by publisher]​

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