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Relationships of Peak Leg Power, 1 Maximal Repetition Half Back Squat, and Leg Muscle Volume to 5-m Sprint Performance of Junior Soccer Players

Chelly, Mohamed Souhaiel1,2; Chérif, Najet3; Amar, Mohamed Ben1; Hermassi, Souhail1; Fathloun, Mourad4; Bouhlel, Ezdine3; Tabka, Zouhair3; Shephard, Roy J5

Journal of Strength & Conditioning Research: January 2010 - Volume 24 - Issue 1 - pp 266-271
doi: 10.1519/JSC.0b013e3181c3b298
Research Note

Chelly, MS, Chérif, N, Ben Amar, M, Hermassi, S, Fathloun, M, Bouhlel, E, Tabka, Z, and Shephard, RJ. Relationships of peak leg power, 1 maximal repetition half back squat, and leg muscle volume to 5-m sprint performance of junior soccer players. J Strength Cond Res 24(1): 266-271, 2010-Performance over very short distances (1-5 m) is important in soccer. We investigated this in 23 male regional-level soccer players aged 17.2 ± 0.7 years, filming body markers to determine the average velocity and acceleration over the first step (VS and AS) and the first 5 m (V5, A5). Data were related to scores on a force-velocity test, squat jump (SJ), countermovement jump (CMJ), and 1 maximal repetition (1 RM) half back squat. Leg and thigh muscle volumes were also assessed anthropometrically. V5 was positively correlated with leg and thigh muscle volumes (r = 0.61, p < 0.05; r = 0.43, p < 0.05, respectively), SJ power (absolute and relative to body mass, r = 0.45, p < 0.05; r = 0.43, p < 0.05, respectively), absolute force-velocity leg power (r = 0.49, p < 0.05), and 1 RM half back squat (r = 0.66, p < 0.001). The use of dimensional exponents did not change coefficients materially. VS was also correlated with leg muscle volume and 1 RM back half squat (r = 0.56, p < 0.01; r = 0.58, p < 0.01, respectively) and more weakly with force-velocity leg power and SJ force (r = 0.49, p < 0.05; r = 0.46, p < 0.5, respectively). However, the CMJ was unrelated to velocity or acceleration. Sprinting ability is correlated with measures of power and force such as the force-velocity test, SJ, and 1 RM half back squat; such measures thus offer useful guidance to soccer coaches who wish to improve the short-distance velocity of their players.

1Research Unit Evaluation and Analysis of Factors Influencing Sport Performance, ISSEP of Ksar Said, Tunis, Tunisia; 2High Institute of Sport and Physical Education of Ksar Said, Tunis, Tunisia; 3Laboratory of Physiology, Faculty of Medicine Ibn-El-jazzar, Sousse, Tunisia; 4High Institute of Sport and Physical Education, El Kef, Tunisia; and 5Faculty of Physical Education & Health, University of Toronto, Toronto, Canada

Address correspondence to Mohamed S. Chelly,

© 2010 National Strength and Conditioning Association