title: What characterizes cleaners sustaining good musculoskeletal health after years with physically heavy work?
abstract: OBJECTIVE
  The aim of this case-control study was to investigate characteristics of cleaners with good musculoskeletal health after years with physically heavy work.
  
  
  METHODS
  One hundred and 41 female seniority cleaners participated. Twenty-five reported no musculoskeletal symptoms, whereas 83 reported severe symptoms in the low back, neck shoulders or upper limbs. The groups were of matching age, height, body weight and seniority (19 years). Muscular strength was recorded by isometric maximal voluntary contractions on a day without pain. Exposure to physical risk factors at work, psychosocial work factors, and leisure time physical activity were assessed by a postal questionnaire.
  
  
  RESULTS
  Cleaners with good musculoskeletal health were not reporting different exposure to physical risk factors at work or leisure time physical activity, but had higher muscular strength and reported higher influence at work than cleaners with severe symptoms.
  
  
  CONCLUSIONS
  These findings suggest that muscular strength and influence at work are of relevance for sustaining good musculoskeletal health in workers with physically heavy work.
authors.affiliation: National Research Center for the Working Environment, Lersø Parkalle 105, 2100 Copenhagen, Denmark. aho@nrcwe.dk
authors.forename: A
authors.initials: A
authors.lastname: Holtermann
authors.forename: A K
authors.initials: AK
authors.lastname: Blangsted
authors.forename: H
authors.initials: H
authors.lastname: Christensen
authors.forename: K
authors.initials: K
authors.lastname: Hansen
authors.forename: K
authors.initials: K
authors.lastname: Søgaard
mesh_terms: D016022:Case-Control Studies; D003718:Denmark / Q000453:epidemiology; D005260:Female; D006304:Health Status; D006801:Humans; D008019:Life Style; D008875:Middle Aged; D009043:Motor Activity; D053580:Muscle Strength / Q000502:physiology*; D009140:Musculoskeletal Diseases / Q000453:epidemiology / Q000209:etiology / Q000517:prevention & control*; D009142:Musculoskeletal Physiological Phenomena; D016272:Occupational Health; D014937:Work / Q000502:physiology* / Q000523:psychology