Central European Journal of Sport Sciences and Medicine

ISSN: 2300-9705     eISSN: 2353-2807     DOI: 10.18276/cej.2015.3-11
CC BY-SA   Open Access 

Lista wydań / Vol. 11, No. 3/2015
Changes in Bar Velocity and Muscular Activity During the Bench Press in Relation to the Load Lifted

Rok wydania:2015
Liczba stron:7 (95-101)
Słowa kluczowe: sticking region EMG bar velocity
Autorzy: Artur Gołaś
Department of Sports Training, The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland

Adam Maszczyk
Department of Statistics and Methodology, The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland

Miroslav Petr
Department of Physiology and Biochemistry, Faculty of Physical Education and Sport, Charles University in Prague, Czech Republic

Petr Statsny
Palacky University in Olomouc, Faculty of Physical Culture, Olomouc, Czech Republic

Michał Wilk
Department of Sports Training, The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland

Grzegorz Wróbel
PhD student. The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland

Abstrakt

The purpose of the study was to determine velocity changes in relation to the load lifted along with their muscular activity. Twenty athletes representing different sport disciplines, familiar with the flat bench press took part in the research project. The ANOVA analysis revealed a significantly higher effect on range of mean velocity (F = 128.34; η2 = 1.22 with p = 0.001) and maximal velocity (F = 7 3.31; η 2 = 0 .81 w ith p = 0 .001) t o m easured l oads ( 70÷100% 1-RM) i n a scending p hase. Tukey’s p ost-hoc t ests revealed a statistically significant difference between 70% and 100% 1-RM loads, in mean velocity with p = 0.001 and maximal velocity with p = 0.001. Similarly the results revealed a statistically significant difference between 80% and 100% 1-RM loads in mean velocity (p = 0,012) and maximal velocity (p = 0,021) during the ascending phase. Relationship between velocity and the muscles activity indicates that the anterior deltoid and latissimus dorsi muscles show synergy and a significant relationship for loads 90 and 100% 1-RM. The triceps brachii muscle shows a higher relationship with velocity of the barbell for loads 70% and 80%, then the relationship of the pectoralis major muscle with velocity only for 90% 1-RM.
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