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2013 | 5 | 3 | 184-190
Tytuł artykułu

Differences in bioelectrical activity of quadriceps muscle during various types of contraction

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Background: The aim of the study was to estimate differences in bioelectrical activity between rectus femoris (RF) and vastus medialis (VM) muscles of each lower limb. Material/Methods: 29 female and 18 male adult subjects participated in the study. Each subject performed the following quadriceps contractions with each lower limb: concentric, isometric, eccentric and 30-sec. long maximal voluntary isometric contraction. 3 parameters were obtained in surface electromyography (SEMG): mean RMS amplitude (RMS), mean percentage value of maximal voluntary contraction (%MVC) and mean frequency (MF). Results: RF occurred to have a lower percentage activity (-28.43%) and absolute amplitude (- 36.57%) value than VM during all three basic forms of contraction against gravity. Except the RMS values for concentric contraction, all the mentioned parameters were significantly different. In contrast, RF had a higher MF rate than VM. Differences were at the mean level of 22.57% for all activities. Conclusions: There are no differences in SEMG of quadriceps muscle between both lower limbs. VM and RF differ from each other in RMS, %MVC and MF during all types of studied contractions.
Wydawca

Rocznik
Tom
5
Numer
3
Strony
184-190
Opis fizyczny
Daty
wydano
2013-10-01
online
2013-10-20
Twórcy
  • Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nikolaus Copernicus University, Chair and Dep. of Laserotherapy and Physiotherapy, Poland, bar.niespodzinski@wp.pl
  • Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nikolaus Copernicus University, Chair and Dep. of Laserotherapy and Physiotherapy, Poland
  • Institute of Physical Culture, Dep. of Biomedical Fundamentals of Physical Culture, Kazimierz Wielki University in Bydgoszcz, Poland
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_bjha-2013-0017
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