Int J Sports Med 2015; 36(02): 130-136
DOI: 10.1055/s-0034-1385880
Training & Testing
© Georg Thieme Verlag KG Stuttgart · New York

Determinant Factors of Repeat Sprint Sequences in Young Soccer Players

M. López-Segovia
1   Research Group, Murcia Soccer Federation, Murcia, Spain
2   INNOVA, Health & Sport Institute
,
F. Pareja-Blanco
3   Faculty of Sport, Pablo de Olavide University, Seville, Spain
,
P. Jiménez-Reyes
4   Physical Activity and Sports Science, Catholic University of San Antonio, Murcia, Spain
,
J. J. González-Badillo
3   Faculty of Sport, Pablo de Olavide University, Seville, Spain
› Author Affiliations
Further Information

Publication History



accepted after revision 17 June 2014

Publication Date:
26 September 2014 (online)

Preview

Abstract

The aim of this study was to investigate the relationships between repeated explosive effort sequences (20+20 m shuttle sprint with change of direction, kicking and jumping), metabolic response (lactate and ammonia), and fitness qualities (strength and endurance) in under-19 soccer players. 21 players completed: 1) sprint test: 30 m (T30) and 40 m (20+20 m) shuttle sprints; 2) countermovement jumps (CMJ); 3) maximal kicking; and 4) 9 repeated-explosive effort sequences (RES); 4) a progressive isoinertial loading test in full squat to determine the load which subjects achieved ~1 m · s−1 (V1-load); 6) Yo-Yo Intermittent Recovery Test Level 1 (YYIRT-1). Mean sprint time of the 9 repeated sprints (RSAmean1–9) showed correlation with V1-load (r=− 0.52 [− 0.79, − 0.25]) metabolic response (lactate, r=0.67 [0.47, 0.87] and ammonia, r=0.53 [0.27, 0.79]). YYIRT-1 correlated with RSAmean1-9 (rw=− 0.78 [− 0.92, − 0.64]) when the body weight was controlled. Furthermore, the 3 first sprints (RSAmean1-3) correlated with RSAbest (r=0.93 [0.88, 0.98]), V1-load (r=− 0.64 [−0.86, − 0.42]), and T30 (r=0.63 [0.41, 0.85]). These results suggest that the soccer player’s lower body strength (V1-load, jumping and sprinting) explains a large part of the performance in the first sequences, whereas the aerobic capacity, estimated through YYIRT-1, becomes more important to performance as the number of sprints is increases.