title: Patients with low back pain demonstrate increased activity of the posterior oblique sling muscle during prone hip extension.
abstract: OBJECTIVE
  To examine activation patterns of the myofascial chain in women experiencing chronic low back pain (CLBP) and women without CLBP during a prone hip extension (PHE) test.
  
  
  METHODS
  Cross-sectional.
  
  
  METHODS
  Clinical research laboratory.
  
  
  METHODS
  Fifteen women experiencing CLBP and 15 women without CLBP.
  
  
  METHODS
  Surface electromyographic recordings from the posterior oblique sling during PHE.
  
  
  METHODS
  Two-sample t-tests were used to compare demographic information and electromyographic signal amplitude of the posterior oblique sling between groups.
  
  
  RESULTS
  Women with CLBP exhibited significantly increased normalized electromyographic signal amplitudes in the contralateral latissimus dorsi (P = .01), contralateral elector spinae (P < .01), ipsilateral elector spinae (P < .01), ipsilateral gluteus maximus (P = .03), and ipsilateral biceps femoris (P = .02) compared with women without CLBP.
  
  
  CONCLUSIONS
  Women with CLBP had greater activity in the posterior oblique sling muscles than did women without CLBP during PHE. These findings suggest that an alteration can be made in posterior oblique sling muscle activities during PHE in women with CLBP.
authors.affiliation: Department of Rehabilitation Science, Graduate School, INJE University, Gimhae, Republic of Korea(∗).
authors.forename: Ji-Won
authors.initials: JW
authors.lastname: Kim
authors.affiliation: Department of Rehabilitation Science, Graduate School, INJE University, Gimhae, Republic of Korea(†).
authors.forename: Min-Hyeok
authors.initials: MH
authors.lastname: Kang
authors.affiliation: Department of Physical Therapy, College of Biomedical Science and Engineering, INJE University, 607 Obang-dong, Gimhae-si, Gyeongsangnam-do 621-749, Gimhae, Republic of Korea(‡). Electronic address: ysrehab@inje.ac.kr.
authors.forename: Jae-Seop
authors.initials: JS
authors.lastname: Oh
mesh_terms: D000328:Adult; D064131:Back Muscles / Q000503:physiopathology*; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D004576:Electromyography; D005260:Female; D006621:Hip Joint / Q000502:physiology; D006801:Humans; D017116:Low Back Pain / Q000503:physiopathology*; D008875:Middle Aged; D009068:Movement / Q000502:physiology; D016684:Prone Position / Q000502:physiology; D055815:Young Adult