title: Responsiveness of the bridge maneuvers in subjects with symptomatic lumbar spondylolisthesis: A prospective cohort study.
abstract: OBJECTIVE
  To date no study was made on the responsiveness of Bridge tests (BTs) in subjects with low back pain and spondylolisthesis (SPL) submitted to a physical therapy program. The objective of this study is to examine the responsiveness of the BTs in subjects with symptomatic lumbar SPL.
  
  
  METHODS
  One hundred twenty patients with symptomatic SPL received physical therapy treatments for a number of sessions depending on the individual patient's needs. Each session included supervised exercises and the teaching of home exercises aiming to improve the lumbar stability, for about 1 hr in total. At the beginning and immediately after the last session of treatment, participants completed the Oswestry Disability Index - Italian version and the Pain Numerical Rating Scale, and performed the supine bridging (SBT) and the prone bridging (PBT). The global perception of effectiveness was measured with a seven-point Likert scale Global Perceived Effect questionnaire.
  
  
  RESULTS
  The mean post-treatment change score (95% confidence interval [CI]) was 18.2 s (14.5; 21.9) for the PBT and 43.9 s (35.1; 52.8) for the SBT, all p < .001. The area under the receiver operating characteristic curve for the PBT was 0.83 (95% CI 0.74-0.91) and for the SBT was 0.703 (95% CI 0.61-0.80). The optimal cutoff points were 19.5 s for the PBT and 62.5 s for the SBT. Logistic regression revealed that PBT (odds ratio = 0.952) was associated with the type of SPL. The final regression model explained 36.4% (R2= 0.36; p = .001) of the variability.
  
  
  CONCLUSIONS
  Bridge maneuvers proved to be responsive, because their results were significantly related to pain and disability changes. BTs may be suggested to detect clinical changes after physical therapy treatment in symptomatic SPL. Copyright © 2017 John Wiley & Sons, Ltd.
authors.affiliation: Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum University of Bologna, Bologna, Italy.
authors.forename: Carla
authors.identifier: http://orcid.org/0000-0002-7741-9200
authors.initials: C
authors.lastname: Vanti
authors.affiliation: Department of Biomedical Sciences, University of Padova, Padua, Italy.
authors.forename: Silvano
authors.initials: S
authors.lastname: Ferrari
authors.affiliation: IRCCS Istituto Ortopedico Galeazzi, Milan, Italy.
authors.forename: Pedro
authors.initials: P
authors.lastname: Berjano
authors.affiliation: IRCCS Don Gnocchi Foundation, Milan, Italy.
authors.forename: Jorge Hugo
authors.initials: JH
authors.lastname: Villafañe
authors.affiliation: Operative Unit of Physical and Rehabilitation Medicine, Scientific Institute of Lissone, Salvatore Maugeri Foundation, IRCCS, Milan, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Monticone
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000534:rehabilitation*; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D026741:Physical Therapy Modalities; D011446:Prospective Studies; D013168:Spondylolisthesis / Q000534:rehabilitation*
keywords: bridge maneuvers; responsiveness; spondylolisthesis