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Sex differences in muscular load among house painters performing identical work tasks

In English

Författare

  • Jacob Meyland
  • Thomas Heilskov-Hansen
  • Tine Alkjaer
  • Henrik Koblauch
  • Sigurd Mikkelsen
  • Susanne Wulff Svendsen
  • Jane Frolund Thomsen
  • Gert-Åke Hansson
  • Erik B. Simonsen

Summary, in English

The present study aimed to estimate possible differences in upper body muscular load between male and female house painters performing identical work tasks. Sex-related differences in muscular load may help explain why women, in general, have more musculoskeletal complaints than men. In a laboratory setting, 16 male and 16 female house painters performed nine standardised work tasks common to house painters. Unilateral electromyography (EMG) recordings were obtained from the supraspinatus muscle by intramuscular electrodes and from the trapezius, extensor and flexor carpi radialis muscles by surface electrodes. Relative muscular loads in %EMG(max) as well as exerted force in Newton, based on ramp calibrations, were assessed. Sex differences were tested using a mixed model approach. Women worked at about 50 % higher relative muscular loads than men in the supraspinatus and forearm muscles at all percentiles and in all tasks. Women exerted about 30 % less force in the trapezius muscle at the 50th percentile. Female house painters had a higher relative muscular load than their male colleagues without exerting more force. The effects of a higher relative muscular load accumulated over years of work may in part explain why musculoskeletal complaints in the upper body occur more frequently among women than men.

Publiceringsår

2014

Språk

Engelska

Sidor

1901-1911

Publikation/Tidskrift/Serie

European Journal of Applied Physiology

Volym

114

Issue

9

Dokumenttyp

Artikel i tidskrift

Förlag

Springer

Ämne

  • Physiology

Nyckelord

  • Electromyography
  • EMG
  • Surface EMG
  • Intramuscular EMG
  • Force
  • Upper
  • extremity
  • Musculoskeletal complaints
  • Occupational medicine

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1439-6327