title: Pressure pain sensitivity maps, self-reported musculoskeletal disorders and sickness absence among cleaners.
abstract: BACKGROUND
  Pressure pain threshold mapping is a valuable method for the identification of distinct zones of mechanical pain sensitivity. Such approach was applied for the first time in relation to self-reported musculoskeletal disorders and long-term sickness absence (LTSA) within the last 12 months among cleaners.
  
  
  METHODS
  About 29 cleaners filled out a self-administered questionnaire regarding health, work-related measures and musculoskeletal disorders. Subsequently, PPTs were measured at (1) tibialis anterior (control location, 1 point), (2) the neck-shoulder (48 points) and (3) the low back regions (27 points). LTSA was defined as ten or more consecutive workdays with sick leave.
  
  
  RESULTS
  The PPT maps revealed the spatial heterogeneity in mechanical sensitivity among cleaners. The level of pain in the neck and dominant shoulder and upper back within the last 7 days correlated negatively with most PPT measurements. The group of cleaners with LTSA had significantly lower levels of PPT (large effects) in the neck-shoulder region than the cleaners with no LTSA (P < 0.05; partial η(2) = 0.19 in average).
  
  
  CONCLUSIONS
  The present study investigated pressure pain topographical maps from the neck-shoulder and low back region in cleaners. Cleaners with LTSA the last year exhibited mechanical hyperalgesia as depicted by lower PPT in the neck-shoulder compared with cleaners without LTSA. More studies assessing the relation between PPT maps, self-reported musculoskeletal disorders and sickness absence are warranted.
authors.affiliation: Laboratory for Ergonomics and Work-related Disorders, Center for Sensory-Motor Interaction (SMI), Department of Health Science and Technology, Aalborg University, Fredrik Bajers Vej 7, Aalborg, Denmark.
authors.forename: Asbjørn Thalund
authors.initials: AT
authors.lastname: Binderup
authors.forename: Andreas
authors.initials: A
authors.lastname: Holtermann
authors.forename: Karen
authors.initials: K
authors.lastname: Søgaard
authors.forename: Pascal
authors.initials: P
authors.lastname: Madeleine
mesh_terms: D000041:Absenteeism; D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D007866:Leg; D017116:Low Back Pain / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D009140:Musculoskeletal Diseases / Q000175:diagnosis*; D019547:Neck Pain / Q000175:diagnosis; D009784:Occupational Diseases / Q000175:diagnosis*; D010146:Pain / Q000175:diagnosis*; D011312:Pressure; D057566:Self Report; D012737:Sex Factors; D020069:Shoulder Pain / Q000175:diagnosis; D011795:Surveys and Questionnaires; D013997:Time Factors