title: Physical conditioning programs for improving work outcomes in workers with back pain.
abstract: BACKGROUND
  Physical conditioning programs aim to improve work status for workers on sick leave. This is an update of a Cochrane Review (Work conditioning, work hardening and functional restoration for workers with back and neck pain) first published in 2003.
  
  
  OBJECTIVE
  To compare the effectiveness of physical conditioning programs in reducing time lost from work for workers with back pain.
  
  
  METHODS
  We searched the following databases to June/July 2008: CENTRAL (The Cochrane Library 2008, issue 3), MEDLINE from 1966, EMBASE from 1980, CINAHL from 1982, PsycINFO from 1967, and PEDro.
  
  
  METHODS
  Randomized controlled trials (RCTs) and cluster RCTs that studied workers with work disability related to back pain and who were included in physical conditioning programs.
  
  
  METHODS
  Two review authors independently extracted data and assessed risk of bias.
  
  
  RESULTS
  Thirty-seven references, reporting on 23 RCTs (3676 workers) were included, 13 of which had a low risk of bias. In 14 studies, physical conditioning programs were compared to usual care. In workers with acute back pain, there was no effect on sickness absence. For workers with subacute back pain, we found conflicting results, but subgroup analysis showed a positive effect of interventions with workplace involvement. In workers with chronic back pain, pooled results of five studies showed a small effect on sickness absence at long-term follow-up (SMD: -0.18 (95% CI: -0.37 to 0.00)). In workers with chronic back pain, physical conditioning programs were compared to other exercise therapy in six studies, with conflicting results. The addition of cognitive behavioural therapy to physical conditioning programs was not more effective than the physical conditioning alone.
  
  
  CONCLUSIONS
  The effectiveness of physical conditioning programs in reducing sick leave when compared to usual care or than other exercises in workers with back pain remains uncertain. In workers with acute back pain, these programs probably have no effect on sick leave, but there may be a positive effect on sick leave for workers with subacute and chronic back pain. Workplace involvement might improve the outcome. Better understanding of the mechanism behind physical conditioning programs and return-to-work is needed to be able to develop more effective interventions.
authors.affiliation: Faculty of Health Sciences, University of Sydney, Cumberland Campus, PO Box 170, Lidcombe, NSW, Australia, 1825.
authors.forename: Frederieke
authors.initials: F
authors.lastname: Schaafsma
authors.forename: Eva
authors.initials: E
authors.lastname: Schonstein
authors.forename: Karyn M
authors.initials: KM
authors.lastname: Whelan
authors.forename: Eirik
authors.initials: E
authors.lastname: Ulvestad
authors.forename: Dianna Theadora
authors.initials: DT
authors.lastname: Kenny
authors.forename: Jos H
authors.initials: JH
authors.lastname: Verbeek
mesh_terms: D000328:Adult; D001416:Back Pain / Q000534:rehabilitation*; D015928:Cognitive Behavioral Therapy; D005081:Exercise Therapy; D006801:Humans; D019547:Neck Pain / Q000534:rehabilitation*; D009788:Occupational Therapy; D010147:Pain Measurement; D010809:Physical Fitness; D016032:Randomized Controlled Trials as Topic; D018582:Sick Leave; D016896:Treatment Outcome; D014937:Work