Int J Sports Med 2015; 36(04): 308-314
DOI: 10.1055/s-0034-1395521
Training & Testing
© Georg Thieme Verlag KG Stuttgart · New York

Effects of Eccentric Overload Bout on Change of Direction and Performance in Soccer Players

M. de Hoyo
1   Physical Education and Sport, University of Seville, Seville, Spain
4   Fitness Section, Sevilla Football Club, Seville, Spain
,
A. de la Torre
2   Medical Services, Getafe Football Club, Madrid, Spain
,
F. Pradas
3   Department of Sport Sciences, University of Zaragoza, Huesca, Spain
,
B. Sañudo
1   Physical Education and Sport, University of Seville, Seville, Spain
,
L. Carrasco
1   Physical Education and Sport, University of Seville, Seville, Spain
,
J. Mateo-Cortes
1   Physical Education and Sport, University of Seville, Seville, Spain
,
S. Domínguez-Cobo
4   Fitness Section, Sevilla Football Club, Seville, Spain
,
O. Fernandes
5   Sports and Health Department, University of Évora, Sports and Health Department, Évora, Portugal
,
O. Gonzalo-Skok
6   Faculty of Health Sciences, University of San Jorge, Zaragoza, Spain
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accepted after revision 05. September 2014

Publikationsdatum:
19. Dezember 2014 (online)

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Abstract

The aims of this study were to analyse the effects of eccentric overload training (EOT) on kinetic parameters during change of direction (COD) and performance related to sprinting and jumping abilities. 20 male soccer players performed 2 different protocols: 1) 5-min cycling warm-up and 2) 5-min cycling warm-up+YoYo half-squat exercise. The outcome measured included vertical ground reaction force (vGRF) and propulsive force (PvGRF), time to vGRF (T_vGRF) and propulsive force (T_PvGRF), contact time (CT), eccentric (ECC_IMP), concentric (CONC_IMP) and total (TOT_IMP) impulses and moments (Mx, My and Mz) during 2 COD tasks. Additionally, subjects performed a counter-movement jump (CMJ) and 20 m sprint tests. Results showed a substantial better improvement (likely to almost certainly) in vGRF (ES: 0.84), vAGRF (ES: 0.72), CT (ES: 0.48), My (ES: 0.35), Mz (ES: 0.44) and ECC_IMP (ES: 0.45) during crossover cutting maneuver, whereas during side-step cutting maneuver Time_ECC (ES: 0.68), CT (ES: 0.64), vGRF (ES: 0.48) and My (ES: 0.47) were substantially enhanced (likely). Furthermore, substantial better performance was found in CMJ (ES: 0.47; very likely) and 20 m (ES: 0.20; possibly). In conclusion, EOT produced a better muscle activation during 2 different COD tasks and greater sprinting and jumping performance.