Skip to main content
Article
EMG Activation of the Vastus Medialis Oblique and Vastus Lateralis During Four Rehabilitative Exercises
Funded Articles
  • Debra Kushion, Grand Valley State University
  • Jessica Rheaume, Grand Valley State University
  • Kim Kopchitz, Grand Valley State University
  • Stephen Glass, Grand Valley State University
  • Gordon Alderink, Grand Valley State University
  • Jann-Huei Jinn, Grand Valley State University
Publication Date
1-1-2012
Keywords
  • Knee pain,
  • patellofemoral pain,
  • knee rehabilitation,
  • vastus medialis,
  • VMO
Abstract
The purpose of this study was to compare four common rehabilitation exercises used in physical therapy clinics for activating the vastus medialis oblique (VMO) and vastus lateralis (VL). Thirty-four subjects, aged 22-28 years, without patellofemoral pain syndrome (PFPS) (18 females and 16 males) were recruited. Subjects performed four exercises—straight leg raise with neutral and externally rotated hip positions (SLRN, SLRER), and short arc quad with neutral and externally rotated hip positions (SAQN, SAQER). The integrated electromyographic (iEMG) activity of the VMO and VL and were recorded, with means of the VMO, VL and VMO/VL compared across exercises. No significant difference was found for the VMO/VL ratio across the four exercises (p=0.147). However, for the VMO and VL individually, a significant difference was found (p=0.0001), SAQER was significantly greater than SLRN and SLRER; SAQN was significantly greater than SLRN and SLRER. These findings suggest that exercises including short arc quad knee extensions are more effective for both the VMO and VL activation than those incorporating straight leg raises, and potentially more beneficial in the rehabilitation of patients with PFPS.
Citation Information
Debra Kushion, Jessica Rheaume, Kim Kopchitz, Stephen Glass, et al.. "EMG Activation of the Vastus Medialis Oblique and Vastus Lateralis During Four Rehabilitative Exercises" (2012)
Available at: http://works.bepress.com/stephen_glass/1/