Original scientific paper

https://doi.org/10.26582/k.56.2.4

Resistance training carried out before practice compromises the performance of several high-velocity tasks in soccer goalkeepers

Danica Janicijevic ; Faculty of Sports Science, Ningbo University, Ningbo, China; Research Academy of Human Biomechanics, The Affiliated Hospital of Medical School of Ningbo University, Ningbo University, Ningbo, China; Department of Sports Sciences and Physical Conditioning, Faculty of Education, Universidad Católica de la Santísima Concepción, Concepción, Chile
Jesualdo Cuevas-Aburto ; Department of Sports Sciences and Physical Conditioning, Faculty of Education, Universidad Católica de la Santísima Concepción, Concepción, Chile
Zhaoqian Li ; Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Spain
Amador García Ramos ; Faculty of Sports Science, Ningbo University, Ningbo, China; Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Spain *

* Corresponding author.

Abstract

This study aimed to elucidate whether the performance of high-velocity soccer-related tasks is compromised immediately after completing squat-based resistance training sessions differing in the level of effort. Eleven young male soccer goalkeepers (age: 17.1±1.7 years) completed four testing sessions. The parallel back-squat one-repetition maximum (1RM) was determined in the first session. The remaining sessions were applied in a counterbalanced order and they consisted of the assessment of four high-velocity soccer-related tasks (countermovement jump [CMJ], horizontal jump, soccer kicking, and soccer throwing) at rest (control protocol) and immediately after completing four sets of the squat exercise against the 60%1RM until reaching a velocity loss of 15% (low-effort protocol) and 30% (moderate-effort protocol). The mean velocity of the fastest repetition did not differ between the protocols (≈ 0.80 m·s-1; p=.447), whereas the number of repetitions was greater for the moderate-effort (18.2±5.3 repetitions) compared to the low-effort (10.1±4.5 repetitions) protocol (p<.001). The protocols were ranked according to the magnitude of the dependent variables as follows: CMJ height (control > low-effort = moderate-effort), horizontal jump distance (control > low-effort > moderate-effort), kicking ball distance (low-effort = control = moderate-effort), and throwing ball distance (control = low-effort = moderate-effort). These results indicate that squat-based RT sessions compromise the performance of some high-velocity tasks (vertical and horizontal jumps) but not others (kicking and throwing), whereas a greater level of effort (i.e., velocity loss) only induced larger reductions in the performance of the horizontal jump distance.

Keywords

football; jump; kicking; squat; throwing; velocity-based training

Hrčak ID:

322891

URI

https://hrcak.srce.hr/322891

Publication date:

31.12.2024.

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