title: Characteristic dynamic differences between healthy and low back pain subjects.
abstract: METHODS
  Open retrospective study.
  
  
  OBJECTIVE
  To assess the functional capacity impairment of chronic low back pain (LBP) patients using characteristic dynamic changes.
  
  
  METHODS
  Orthopaedics and Physiotherapy departments at Tel-Aviv, Israel.
  
  
  METHODS
  Thirty-eight normal healthy volunteers and 607 chronic LBP patients were tested on a computerized 3-D lumbar dynamometer. The four major parameters measured were the maximal isometric torque (MIT), maximal velocity against 25% MIT and 50% MIT (MV25, MV50, respectively) and maximal torques in secondary axes (MST). All patients parameters were compared to the normal, healthy findings.
  
  
  RESULTS
  All four parameters were found to be significantly different between healthy (or non-symptomatic) and symptomatic LBP subjects.
  
  
  CONCLUSIONS
  The findings support the use of 3-D dynamometry and the four parameters mentioned to objectively classify patients with functional disability.
authors.affiliation: The Orthopaedic B' Department, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
authors.forename: M
authors.initials: M
authors.lastname: Nissan
authors.forename: K
authors.initials: K
authors.lastname: Bar-Ilan
authors.forename: S
authors.initials: S
authors.lastname: Brown
authors.forename: E
authors.initials: E
authors.lastname: Luger
authors.forename: E
authors.initials: E
authors.lastname: Steinberg
authors.forename: S
authors.initials: S
authors.lastname: Dekel
mesh_terms: D000328:Adult; D004185:Disability Evaluation; D017079:Exercise Tolerance / Q000502:physiology*; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000175:diagnosis*; D008297:Male; D012189:Retrospective Studies