Vastus medialis oblique and vastus lateralis activity during a double-leg semisquat with or without hip adduction in patients with patellofemoral pain syndrome

Ping Miao, Yi Xu, Cuihuan Pan, Hao Liu, Chuhuai Wang

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Abstract

Background: The purpose was to investigate the effect of double-leg semisquat with hip adduction on the activation of vastus medialis oblique (VMO) and vastus lateralis (VL) in patients with patellofemoral pain syndrome (PFPS). Methods: Thirty patients with PFPS were designated to the study group, while 30 healthy matched subjects were enrolled in the control group. The activation of VL and VMO was recorded with surface electromyography (EMG) during double-leg semisquat (DS) and double-leg semisquat with hip adduction (DS-HA). The time domain and frequency domain indexes of the electromyography data were collected for analysis. Results: In the study group, the time domain indexes (RMS, IEMG) and frequency domain index (MPF) of VL were significant higher than VMO in the test of DS (P∈<∈0.05); and the time domain of VMO was significantly higher in the test of DS-HA when compared to DS (P∈<∈0.05) while there was no difference in the activation of VL. Conclusions: In the study group, an increase in activity of the VMO was observed through the surface EMG signal in the double-leg semisquat exercise with hip adduction compared to the exercise without hip adduction. This finding indicates that VMO activation can be more selectively obtained through the exercise with hip adduction which can help balance the VL and VMO.

Original languageEnglish
Article number289
JournalBMC Musculoskeletal Disorders
Volume16
Issue number1
DOIs
StatePublished - 12 Oct 2015

Fingerprint

Patellofemoral Pain Syndrome
Quadriceps Muscle
Hip
Leg
Electromyography
Exercise

Keywords

  • Hip adduction
  • Patellofemoral pain syndrome
  • Surface electromyography
  • Vastus medialis obliquus

Cite this

@article{b4f68ffa32fd47b0b8c12bac0fab1000,
title = "Vastus medialis oblique and vastus lateralis activity during a double-leg semisquat with or without hip adduction in patients with patellofemoral pain syndrome",
abstract = "Background: The purpose was to investigate the effect of double-leg semisquat with hip adduction on the activation of vastus medialis oblique (VMO) and vastus lateralis (VL) in patients with patellofemoral pain syndrome (PFPS). Methods: Thirty patients with PFPS were designated to the study group, while 30 healthy matched subjects were enrolled in the control group. The activation of VL and VMO was recorded with surface electromyography (EMG) during double-leg semisquat (DS) and double-leg semisquat with hip adduction (DS-HA). The time domain and frequency domain indexes of the electromyography data were collected for analysis. Results: In the study group, the time domain indexes (RMS, IEMG) and frequency domain index (MPF) of VL were significant higher than VMO in the test of DS (P∈<∈0.05); and the time domain of VMO was significantly higher in the test of DS-HA when compared to DS (P∈<∈0.05) while there was no difference in the activation of VL. Conclusions: In the study group, an increase in activity of the VMO was observed through the surface EMG signal in the double-leg semisquat exercise with hip adduction compared to the exercise without hip adduction. This finding indicates that VMO activation can be more selectively obtained through the exercise with hip adduction which can help balance the VL and VMO.",
keywords = "Hip adduction, Patellofemoral pain syndrome, Surface electromyography, Vastus medialis obliquus",
author = "Ping Miao and Yi Xu and Cuihuan Pan and Hao Liu and Chuhuai Wang",
year = "2015",
month = "10",
day = "12",
doi = "10.1186/s12891-015-0736-6",
language = "English",
volume = "16",
journal = "BMC Musculoskeletal Disorders",
issn = "1471-2474",
publisher = "BioMed Central Ltd.",
number = "1",

}

Vastus medialis oblique and vastus lateralis activity during a double-leg semisquat with or without hip adduction in patients with patellofemoral pain syndrome. / Miao, Ping; Xu, Yi; Pan, Cuihuan; Liu, Hao; Wang, Chuhuai.

In: BMC Musculoskeletal Disorders, Vol. 16, No. 1, 289, 12.10.2015.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Vastus medialis oblique and vastus lateralis activity during a double-leg semisquat with or without hip adduction in patients with patellofemoral pain syndrome

AU - Miao, Ping

AU - Xu, Yi

AU - Pan, Cuihuan

AU - Liu, Hao

AU - Wang, Chuhuai

PY - 2015/10/12

Y1 - 2015/10/12

N2 - Background: The purpose was to investigate the effect of double-leg semisquat with hip adduction on the activation of vastus medialis oblique (VMO) and vastus lateralis (VL) in patients with patellofemoral pain syndrome (PFPS). Methods: Thirty patients with PFPS were designated to the study group, while 30 healthy matched subjects were enrolled in the control group. The activation of VL and VMO was recorded with surface electromyography (EMG) during double-leg semisquat (DS) and double-leg semisquat with hip adduction (DS-HA). The time domain and frequency domain indexes of the electromyography data were collected for analysis. Results: In the study group, the time domain indexes (RMS, IEMG) and frequency domain index (MPF) of VL were significant higher than VMO in the test of DS (P∈<∈0.05); and the time domain of VMO was significantly higher in the test of DS-HA when compared to DS (P∈<∈0.05) while there was no difference in the activation of VL. Conclusions: In the study group, an increase in activity of the VMO was observed through the surface EMG signal in the double-leg semisquat exercise with hip adduction compared to the exercise without hip adduction. This finding indicates that VMO activation can be more selectively obtained through the exercise with hip adduction which can help balance the VL and VMO.

AB - Background: The purpose was to investigate the effect of double-leg semisquat with hip adduction on the activation of vastus medialis oblique (VMO) and vastus lateralis (VL) in patients with patellofemoral pain syndrome (PFPS). Methods: Thirty patients with PFPS were designated to the study group, while 30 healthy matched subjects were enrolled in the control group. The activation of VL and VMO was recorded with surface electromyography (EMG) during double-leg semisquat (DS) and double-leg semisquat with hip adduction (DS-HA). The time domain and frequency domain indexes of the electromyography data were collected for analysis. Results: In the study group, the time domain indexes (RMS, IEMG) and frequency domain index (MPF) of VL were significant higher than VMO in the test of DS (P∈<∈0.05); and the time domain of VMO was significantly higher in the test of DS-HA when compared to DS (P∈<∈0.05) while there was no difference in the activation of VL. Conclusions: In the study group, an increase in activity of the VMO was observed through the surface EMG signal in the double-leg semisquat exercise with hip adduction compared to the exercise without hip adduction. This finding indicates that VMO activation can be more selectively obtained through the exercise with hip adduction which can help balance the VL and VMO.

KW - Hip adduction

KW - Patellofemoral pain syndrome

KW - Surface electromyography

KW - Vastus medialis obliquus

UR - http://www.scopus.com/inward/record.url?scp=84944037661&partnerID=8YFLogxK

U2 - 10.1186/s12891-015-0736-6

DO - 10.1186/s12891-015-0736-6

M3 - Article

VL - 16

JO - BMC Musculoskeletal Disorders

JF - BMC Musculoskeletal Disorders

SN - 1471-2474

IS - 1

M1 - 289

ER -