The effect of fatiguing quadriceps on EMG activation of vastus medialis during squatting
Item
- Title
- The effect of fatiguing quadriceps on EMG activation of vastus medialis during squatting
- Author(s)
- Nino, Sarah
- Abstract
- Patellofemoral pain syndrome (PFPS) is a common condition of the knee related to abnormal tracking of the patellofemoral joint. Dysfunction of the vastus medialis (VM) is said to be implicated in this abnormal patellar tracking. By fatiguing the larger phasic components of the quadriceps, subsequent activation of the predominantly postural VM may be affected. The purpose of this study was to investigate whether fatiguing the quadriceps would affect VM electromyographic (EMG) activation during squatting. Eighteen female subjects, aged 19-27, without PFPS were recruited. EMG recordings were taken during 3 consecutive squats, before and after fatiguing the quadriceps. The quadriceps was fatigued by performing maximal voluntary contraction knee-extensions. A small decrease in the average VM activation after fatiguing quadriceps was observed during squatting, however, this decrease was statistically insignificant (p=0.1). Due to the statistical insignificance of the results and various methodological limitations, no conclusive findings were determined by this investigation.
- presented at
- British College of Osteopathic Medicine
- Date Accepted
- 2013
- Date Submitted
- 14.11.2018 14:37:53
- Type
- osteo_thesis
- Language
- English
- Number of pages
- 16
- Submitted by:
- 4457
- Pub-Identifier
- 16333
- Inst-Identifier
- 1076
- Keywords
- EMG, knee rehabilitation, patellofemoral pain syndrome, quadriceps fatigue, Vastus medialis, VMO
- Recommended
- 0
- Item sets
- Thesis
Nino, Sarah, “The effect of fatiguing quadriceps on EMG activation of vastus medialis during squatting”, Osteopathic Research Web, accessed May 4, 2025, https://www.osteopathic-research.org/s/orw/item/2016