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2013 | 38 | 63-71
Tytuł artykułu

A Comparison of Muscle Activity in Concentric and Counter Movement Maximum Bench Press

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The purpose of this study was to compare the kinematics and muscle activation patterns of regular free-weight bench press (counter movement) with pure concentric lifts in the ascending phase of a successful one repetition maximum (1-RM) attempt in the bench press. Our aim was to evaluate if diminishing potentiation could be the cause of the sticking region. Since diminishing potentiation cannot occur in pure concentric lifts, the occurrence of a sticking region in this type of muscle actions would support the hypothesis that the sticking region is due to a poor mechanical position. Eleven male participants (age 21.9 ~ 1.7 yrs, body mass 80.7 ~ 10.9 kg, body height 1.79 ~ 0.07 m) conducted 1-RM lifts in counter movement and in pure concentric bench presses in which kinematics and EMG activity were measured. In both conditions, a sticking region occurred. However, the start of the sticking region was different between the two bench presses. In addition, in four of six muscles, the muscle activity was higher in the counter movement bench press compared to the concentric one. Considering the findings of the muscle activity of six muscles during the maximal lifts it was concluded that the diminishing effect of force potentiation, which occurs in the counter movement bench press, in combination with a delayed muscle activation unlikely explains the existence of the sticking region in a 1-RM bench press. Most likely, the sticking region is the result of a poor mechanical force position.
Słowa kluczowe
Wydawca

Rocznik
Tom
38
Strony
63-71
Opis fizyczny
Daty
wydano
2013-09-01
online
2013-10-08
Twórcy
  • Department of Teacher Education of Nord Trøndelag University College, Levanger Norway, roland.tillaar@hint.no
  • Department of human Movement Science, Faculty of Social Sciences and Technology Management, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
Bibliografia
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  • Sæterbakken A, van den Tillaar R, Fimland M. A comparison of muscle activity and 1-RM strength of three chest-press exercises with different stability requirements. J Sports Sci, 2011; 29(1): 1-6 [WoS]
  • van den Tillaar R, Ettema G. A comparison of kinematics and muscle activity between successful and unsuccessful attempts in bench press. Med Sci Sports Exerc, 2009; 41(11): 2056-2063
  • van den Tillaar R, Ettema G. The “sticking period” in bench press. J Sports Sci, 2010; 28: 529-535
  • van den Tillaar R, Sæterbakken A, Ettema G. Is the sticking region in bench press the result of diminishing potentiation? J Sports Sci, 2012; 30: 591-599[WoS]
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  • Wilson GJ, Wood GA, Elliott BC. Optimal stiffness of series elastic component in a stretch-shorten cycle activity. J Appl Physiol, 1991; 70: 825-833
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_hukin-2013-0046
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