title: The role of ergonomic training interventions on decreasing neck and shoulders pain among workers of an Iranian automobile factory: a randomized trial study.
abstract: BACKGROUND
  Ergonomic training had been implemented for prevention or reduction of neck and shoulder complaints among workers. The purpose of the present study was to assess the role of ergonomic training intervention on decreasing the prevalence of neck and shoulder complaints among workers of an automobile factory.
  
  
  METHODS
  Within the present randomized clinical trial, the role of three ergonomic training methods on the prevalence of neck and shoulders pain among 503 workers of an automobile factory (Response rate: 94.23%) was assessed. The eligible workers were randomly allocated into the following three interventional (pamphlet, lecture, workshop) groups and one control group. The Nordic questionnaire was used to assess the prevalence of neck and shoulder complaints. We followed and assessed the prevalence of neck and shoulders complaints among the study employees before and one year after the intervention. We used chi-square and Mann-Whitney tests to compare the prevalence of neck and shoulder complaints between the trial and control groups. A two-tailed P-value less than or equal to 0.05 was considered statistically significant.
  
  
  RESULTS
  The prevalence of neck and shoulders complaints among the study employees at the recent week (p= 0.002) and year (p= 0.02) had been significantly decreased in the study employees after participating in the study workshop. The prevalence of neck and shoulders complaints at the recent week and year did not significantly changed in the study employees after receiving the pamphlet and lecture as ergonomic trainings.
  
  
  CONCLUSIONS
  Workshop as an ergonomic training method had an effective and powerful role on decreasing the prevalence of neck and shoulders complaints among workers.
authors.affiliation: MD, M.P.H, Associate Professor, Occupational Medicine Research Center (OMRC), Iran University of Medical Sciences and Health Services (IUMS), Tehran, Iran. aghilinejad.m@iums.ac.ir.
authors.forename: Mashallah
authors.initials: M
authors.lastname: Aghilinejad
authors.affiliation: MD, Assistant Professor, Occupational Medicine Research Center (OMRC), Iran University of Medical Sciences and Health Services (IUMS), Tehran, Iran. kabir.e@iums.ac.ir.
authors.forename: Elahe
authors.initials: E
authors.lastname: Kabir-Mokamelkhah
authors.affiliation: MD, M.P.H, Associate Professor, Occupational Medicine Research Center (OMRC) ,Iran University of Medical Sciences and Health Services (IUMS), Tehran, Iran. labafinejad.y@iums.ac.ir.
authors.forename: Yasser
authors.initials: Y
authors.lastname: Labbafinejad
authors.affiliation: MD, MPhil, Research Consultant, PhD by Research Candidate, Occupational Medicine Research Center (OMRC) , Iran University of Medical Sciences and Health Services (IUMS), Tehran, Iran. bahrami.a@iums.ac.ir.
authors.forename: Amir
authors.initials: A
authors.lastname: Bahrami-Ahmadi
authors.affiliation: BS, Occupational Hygienist, co-Member of Medicine Research Center (OMRC) , Iran University of Medical Sciences and Health Services, (IUMS), Tehran, Iran. iranomrc@gmail.com.
authors.forename: Hamid Reza
authors.initials: HR
authors.lastname: Hosseini
keywords: Ergonomic Intervention; Neck and Shoulders Pain; Prevalence; Training