title: Intraexaminer and interexaminer reliability of pressure biofeedback unit for assessing lumbopelvic stability during 6 lower limb movement tests.
abstract: OBJECTIVE
  The purpose of this study was to assess examiners' intrarater and interrater reliability to use a pressure biofeedback unit (PBU) during 6 lower limb movement tests based on Movement System Impairment classification model for low back pain (LBP) in people with nonspecific LBP.
  
  
  METHODS
  Thirty subjects (13 men and 17 women) with chronic nonspecific LPB were assessed during 6 lower limb movement tests based on Movement System Impairment classification using a PBU. Each test was performed twice by 2 assessors with a 48-hour interval between test sessions. Reliability indices of PBU measures (intraclass correlation coefficient [ICC]) were calculated.
  
  
  RESULTS
  Intrarater reliability for hip and knee movement tests was good to excellent (ICC(3,3), 0-.60-0.95). Interrater reliability for hip and knee movement tests was fair to excellent (ICC(2,3), 0.40-0.86). Standard error of the measurement and smallest detectable change for the movement tests ranged from 1.4 to 11.3 mm Hg and from 3.9 to 31.3 mm Hg, respectively.
  
  
  CONCLUSIONS
  The results of this study indicate that trained examiners can reliably perform PBU measures for patients with chronic LBP.
authors: Physical Therapy Department, Pontificia Universidade Catolica de Minas Gerais, MG, Brazil. danielazevedo@pucminas.br
authors: Daniel Camara
authors: DC
authors: Azevedo
authors: Alessandra Christoff
authors: AC
authors: Lauria
authors: André Roberto Scarpelli
authors: AR
authors: Pereira
authors: Guilherme Trivellato
authors: GT
authors: Andrade
authors: Manuela Loureiro
authors: ML
authors: Ferreira
authors: Paulo Henrique
authors: PH
authors: Ferreira
authors: Linda
authors: L
authors: Van Dillen
mesh_terms: D005246:Feedback; D005260:Female; D006621:Hip Joint / Q000502:physiology*; D006801:Humans; D007719:Knee Joint / Q000502:physiology*; D017116:Low Back Pain / Q000503:physiopathology*; D008161:Lumbosacral Region / Q000502:physiology; D008297:Male; D008875:Middle Aged; D009068:Movement / Q000502:physiology*; D015588:Observer Variation; D010388:Pelvis / Q000502:physiology; D011312:Pressure; D016059:Range of Motion, Articular / Q000502:physiology; D015203:Reproducibility of Results